// Numbas version: exam_results_page_options {"feedback": {"advicethreshold": 0, "allowrevealanswer": true, "intro": "", "showanswerstate": true, "showtotalmark": true, "showactualmark": true, "feedbackmessages": []}, "metadata": {"licence": "None specified", "description": "

Chemistry Calculations for Fourth Year Proect. 

"}, "question_groups": [{"pickingStrategy": "all-shuffled", "pickQuestions": 1, "name": "Group", "questions": [{"name": "Question 2: Concentrations and Volumes", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "lauren daly", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2330/"}], "ungrouped_variables": ["SS", "vol", "Formula", "vol1", "Formula2", "Dil", "Formula3", "Stock", "Choice"], "metadata": {"licence": "None specified", "description": ""}, "advice": "", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "functions": {}, "tags": [], "parts": [{"showFeedbackIcon": true, "scripts": {}, "type": "gapfill", "marks": 0, "gaps": [{"notationStyles": ["plain", "en", "si-en"], "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "minValue": "Formula-0.1", "marks": "6", "showFeedbackIcon": true, "showCorrectAnswer": true, "type": "numberentry", "correctAnswerFraction": false, "allowFractions": false, "mustBeReducedPC": 0, "correctAnswerStyle": "plain", "mustBeReduced": false, "maxValue": "Formula+0.1"}], "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "prompt": "

What is the concentration of the volumtric flask containing $\\var{vol}$ cm$^3$ of stock solution?

\n

Answer: [[0]] g/dm$^3$

\n

", "stepsPenalty": "3", "steps": [{"notationStyles": ["plain", "en", "si-en"], "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "allowFractions": false, "marks": 1, "showFeedbackIcon": true, "showCorrectAnswer": true, "type": "numberentry", "correctAnswerFraction": false, "minValue": "SS", "mustBeReducedPC": 0, "prompt": "

C1 = Original concentration of the solution

\n

What is the value of C1

", "correctAnswerStyle": "plain", "mustBeReduced": false, "maxValue": "SS"}, {"notationStyles": ["plain", "en", "si-en"], "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "allowFractions": false, "marks": 1, "showFeedbackIcon": true, "showCorrectAnswer": true, "type": "numberentry", "correctAnswerFraction": false, "minValue": "vol", "mustBeReducedPC": 0, "prompt": "

V= volume about to be diluted

\n

what is the value of V?

\n

", "correctAnswerStyle": "plain", "mustBeReduced": false, "maxValue": "vol"}, {"notationStyles": ["plain", "en", "si-en"], "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "allowFractions": false, "marks": 1, "showFeedbackIcon": true, "showCorrectAnswer": true, "type": "numberentry", "correctAnswerFraction": false, "minValue": "100", "mustBeReducedPC": 0, "prompt": "

V2 Final volume after dilution

\n

What is the value of V2?

", "correctAnswerStyle": "plain", "mustBeReduced": false, "maxValue": "100"}, {"showFeedbackIcon": true, "scripts": {}, "type": "information", "marks": 0, "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "prompt": "

Formula to be used: C1V= C2V2

", "showCorrectAnswer": true}], "showCorrectAnswer": true}, {"showFeedbackIcon": true, "scripts": {}, "type": "gapfill", "marks": 0, "gaps": [{"notationStyles": ["plain", "en", "si-en"], "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "minValue": "Formula2", "marks": "6", "showFeedbackIcon": true, "showCorrectAnswer": true, "type": "numberentry", "correctAnswerFraction": false, "allowFractions": false, "mustBeReducedPC": 0, "correctAnswerStyle": "plain", "mustBeReduced": false, "maxValue": "Formula2"}], "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "prompt": "

What is the concentration of the volumetric flask containing $\\var{vol1}$ cm$^3$ of stock solution?

\n

\n

[[0]] g/dm$^3$

", "showCorrectAnswer": true}, {"showFeedbackIcon": true, "scripts": {}, "type": "gapfill", "marks": 0, "gaps": [{"notationStyles": ["plain", "en", "si-en"], "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "minValue": "Formula3", "marks": "6", "showFeedbackIcon": true, "showCorrectAnswer": true, "type": "numberentry", "correctAnswerFraction": false, "allowFractions": false, "mustBeReducedPC": 0, "correctAnswerStyle": "plain", "mustBeReduced": false, "maxValue": "Formula3"}], "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "prompt": "

A dilution is necessary to achieve a $\\var{dil}$ g/dm$^3$ solution. What volume of the $\\var{SS}$ g/dm3 stock solution is needed in order to get the concentration needed?

\n

Answer: [[0]] cm$^3$

\n

", "showCorrectAnswer": true}], "variables": {"vol1": {"templateType": "randrange", "group": "Ungrouped variables", "name": "vol1", "description": "

Volumes part 2 

", "definition": "random(1..20#1)"}, "Stock": {"templateType": "list of strings", "group": "Ungrouped variables", "name": "Stock", "description": "", "definition": "[ \"NaCl\", \"Glucose\", \"HCl\", \"Tartazine\" ]"}, "Formula2": {"templateType": "anything", "group": "Ungrouped variables", "name": "Formula2", "description": "", "definition": "SS*vol1/100"}, "Dil": {"templateType": "randrange", "group": "Ungrouped variables", "name": "Dil", "description": "

Dilutions

", "definition": "random(0.01..0.04#0.01)"}, "SS": {"templateType": "randrange", "group": "Ungrouped variables", "name": "SS", "description": "

Stock Solution molarity. 

", "definition": "random(0.5..5#0.5)"}, "Formula3": {"templateType": "anything", "group": "Ungrouped variables", "name": "Formula3", "description": "", "definition": "Dil*100/SS"}, "Formula": {"templateType": "anything", "group": "Ungrouped variables", "name": "Formula", "description": "", "definition": "SS*vol/100"}, "Choice": {"templateType": "randrange", "group": "Ungrouped variables", "name": "Choice", "description": "", "definition": "random(0..3#1)"}, "vol": {"templateType": "randrange", "group": "Ungrouped variables", "name": "vol", "description": "

volumes

", "definition": "random(1..20#1)"}}, "rulesets": {}, "statement": "

A stock solution of $\\var{Stock[choice]}$ was made up to a concentration of $\\var{SS}$ g/dm$^3$. Using a pipette 1cm$^3$ to 20cm$^3$ of this stock was transferred to twenty seperate 100cm$^3$ volumetric flasks and diluted to the mark with deionised water. 

", "preamble": {"css": "", "js": ""}, "type": "question"}, {"name": "Question 1: Percent Mass", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "lauren daly", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2330/"}], "statement": "", "preamble": {"js": "", "css": ""}, "rulesets": {}, "tags": [], "variable_groups": [], "parts": [{"prompt": "

$\\var{m}$ g of {Chem1[choice]}Cl and $\\var{V}$ cm $^{3}$ of water are mixed in a beaker. Calculate the concentration of this solution - give your answer in Percent Mass.

\n

Correct to three decimal places. 

\n

Answer: [[0]]% W/V

", "gaps": [{"maxValue": "pm+0.1", "strictPrecision": true, "precisionMessage": "You have not given your answer to the correct precision.", "mustBeReducedPC": 0, "precisionType": "dp", "mustBeReduced": false, "minValue": "pm-0.1", "showPrecisionHint": false, "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst", "notationStyles": ["plain", "en", "si-en"], "precision": "3", "marks": "6", "scripts": {}, "allowFractions": false, "precisionPartialCredit": "70", "type": "numberentry", "correctAnswerFraction": false, "showCorrectAnswer": true, "correctAnswerStyle": "plain", "variableReplacements": []}], "variableReplacements": [], "marks": 0, "stepsPenalty": "2", "type": "gapfill", "scripts": {}, "steps": [{"prompt": "

First find the total mass of the solution:

\n

total mass = mass of solute + volume of water
total mass = X

", "scripts": {}, "variableReplacements": [], "marks": 0, "type": "information", "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst"}, {"prompt": "

Now, you can find the mass percentage of the percent mass using the formula:

\n

mass percent = (grams of solute / Volume of solution) x 100
answer = ___ % Solute

", "scripts": {}, "variableReplacements": [], "marks": 0, "type": "information", "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst"}], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst"}], "variablesTest": {"maxRuns": 100, "condition": ""}, "functions": {}, "advice": "

\n

", "ungrouped_variables": ["m", "V", "pm", "Chem1", "choice"], "variables": {"V": {"templateType": "randrange", "description": "

Volume

", "definition": "random(50..100#0.5)", "group": "Ungrouped variables", "name": "V"}, "m": {"templateType": "randrange", "description": "

mass

", "definition": "random(1..20#0.1)", "group": "Ungrouped variables", "name": "m"}, "Chem1": {"templateType": "list of strings", "description": "", "definition": "[ \"K\", \"Li\", \"Na\" ]", "group": "Ungrouped variables", "name": "Chem1"}, "pm": {"templateType": "anything", "description": "", "definition": "(m/V)*100", "group": "Ungrouped variables", "name": "pm"}, "choice": {"templateType": "randrange", "description": "", "definition": "random(0..2#1)", "group": "Ungrouped variables", "name": "choice"}}, "metadata": {"licence": "None specified", "description": ""}, "type": "question"}, {"name": "Question 6: Unit Conversion", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "David Goulding", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2365/"}], "metadata": {"description": "

Practice of conversion between SI units of mass, volume & length.

", "licence": "Creative Commons Attribution 4.0 International"}, "advice": "

There is no advice for this question.

", "parts": [{"minMarks": 0, "matrix": ["1", 0, 0, 0, 0], "showCorrectAnswer": true, "type": "1_n_2", "variableReplacements": [], "displayColumns": 0, "distractors": ["", "", "", "", ""], "displayType": "radiogroup", "variableReplacementStrategy": "originalfirst", "scripts": {}, "maxMarks": 0, "choices": ["

{ch1}   {Tos[choice]}

", "

{ch2}   {Tos[choice]}

", "

{ch3}   {Tos[choice]}

", "

{ch4}   {Tos[choice]}

", "

{ch5}   {Tos[choice]}

"], "showFeedbackIcon": true, "marks": 0, "prompt": "

What's $\\var{numFroms}$  $\\var{Froms[choice]}$ in $\\var{Tos[choice]} $ ?

", "shuffleChoices": true}, {"minMarks": 0, "matrix": ["1", 0, 0, 0, 0], "showCorrectAnswer": true, "type": "1_n_2", "variableReplacements": [], "displayColumns": 0, "distractors": ["", "", "", "", ""], "displayType": "radiogroup", "variableReplacementStrategy": "originalfirst", "scripts": {}, "maxMarks": 0, "choices": ["

{ch1b}   {Tos[choiceb]}

", "

{ch2b}   {Tos[choiceb]}

", "

{ch3b}   {Tos[choiceb]}

", "

{ch4b}   {Tos[choiceb]}

", "

{ch5b}   {Tos[choiceb]}

"], "showFeedbackIcon": true, "marks": 0, "prompt": "

What's $\\var{numFromsb}$  $\\var{Froms[choiceb]}$ in $\\var{Tos[choiceb]} $ ?

", "shuffleChoices": true}, {"minMarks": 0, "matrix": ["1", 0, 0, 0, 0], "showCorrectAnswer": true, "type": "1_n_2", "variableReplacements": [], "displayColumns": 0, "distractors": ["", "", "", "", ""], "displayType": "radiogroup", "variableReplacementStrategy": "originalfirst", "scripts": {}, "maxMarks": 0, "choices": ["

{ch1c}   {Tos[choicec]}

", "

{ch2c}   {Tos[choicec]}

", "

{ch3c}   {Tos[choicec]}

", "

{ch4c}   {Tos[choicec]}

", "

{ch5c}   {Tos[choicec]}

"], "showFeedbackIcon": true, "marks": 0, "prompt": "

What's $\\var{numFromsc}$  $\\var{Froms[choicec]}$ in $\\var{Tos[choicec]} $ ?

", "shuffleChoices": true}, {"variableReplacementStrategy": "originalfirst", "scripts": {}, "showCorrectAnswer": true, "type": "gapfill", "variableReplacements": [], "gaps": [{"correctAnswerFraction": false, "minValue": "ans1", "allowFractions": false, "correctAnswerStyle": "plain", "maxValue": "ans1", "variableReplacements": [], "type": "numberentry", "variableReplacementStrategy": "originalfirst", "scripts": {}, "mustBeReduced": false, "marks": 1, "notationStyles": ["plain", "en", "si-en"], "showFeedbackIcon": true, "mustBeReducedPC": 0, "showCorrectAnswer": true}], "marks": 0, "prompt": "

What's $\\var{numFroms}$  $\\var{Froms[choiced]}$ in $\\var{Tos[choiced]} $?

\n

Answer: $\\var{numFroms}$  $\\var{Froms[choiced]}$ = [[0]] $\\var{Tos[choiced]}$

", "showFeedbackIcon": true}, {"variableReplacementStrategy": "originalfirst", "scripts": {}, "showCorrectAnswer": true, "type": "gapfill", "variableReplacements": [], "gaps": [{"correctAnswerFraction": false, "minValue": "ans2", "allowFractions": false, "correctAnswerStyle": "plain", "maxValue": "ans2", "variableReplacements": [], "type": "numberentry", "variableReplacementStrategy": "originalfirst", "scripts": {}, "mustBeReduced": false, "marks": 1, "notationStyles": ["plain", "en", "si-en"], "showFeedbackIcon": true, "mustBeReducedPC": 0, "showCorrectAnswer": true}], "marks": 0, "prompt": "

What's $\\var{numFromsb}$  $\\var{Froms[choicee]}$ in $\\var{Tos[choicee]} $?

\n

Answer: $\\var{numFromsb}$ $\\var{Froms[choicee]}$ = [[0]] $\\var{Tos[choicee]}$

", "showFeedbackIcon": true}, {"variableReplacementStrategy": "originalfirst", "scripts": {}, "showCorrectAnswer": true, "type": "gapfill", "variableReplacements": [], "gaps": [{"correctAnswerFraction": false, "minValue": "ans3", "allowFractions": false, "correctAnswerStyle": "plain", "maxValue": "ans3", "variableReplacements": [], "type": "numberentry", "variableReplacementStrategy": "originalfirst", "scripts": {}, "mustBeReduced": false, "marks": 1, "notationStyles": ["plain", "en", "si-en"], "showFeedbackIcon": true, "mustBeReducedPC": 0, "showCorrectAnswer": true}], "marks": 0, "prompt": "

What's $\\var{numFromsc}$  $\\var{Froms[choicef]}$ in $\\var{Tos[choicef]} $?

\n

Answer: $\\var{numFromsc}$ $\\var{Froms[choicef]}$ = [[0]] $\\var{Tos[choicef]}$

", "showFeedbackIcon": true}, {"variableReplacementStrategy": "originalfirst", "scripts": {}, "showCorrectAnswer": true, "type": "gapfill", "variableReplacements": [], "gaps": [{"correctAnswerFraction": false, "minValue": "TForm", "maxValue": "TForm", "precisionType": "dp", "showCorrectAnswer": true, "precision": "2", "mustBeReducedPC": 0, "variableReplacements": [], "showFeedbackIcon": true, "mustBeReduced": false, "scripts": {}, "type": "numberentry", "variableReplacementStrategy": "originalfirst", "marks": 1, "allowFractions": false, "precisionPartialCredit": "75", "strictPrecision": false, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain", "showPrecisionHint": false, "precisionMessage": "You have not given your answer to the correct precision."}], "marks": 0, "prompt": "

What is $\\var{Temp}$ °C in Kelvin? Give answer correct to two decimal places.

\n

[[0]] K

", "showFeedbackIcon": true}], "variable_groups": [{"variables": ["TForm", "Temp"], "name": "Unnamed group"}], "rulesets": {}, "statement": "

Practice of conversion between SI units of mass, volume, length and temperature.

", "preamble": {"js": "", "css": ""}, "tags": [], "variables": {"ci5c": {"templateType": "anything", "name": "ci5c", "description": "", "definition": "random(0..11 except [ci1c, ci2c, ci3c, ci4c])", "group": "Ungrouped variables"}, "choice": {"templateType": "anything", "name": "choice", "description": "", "definition": "random(0..11)", "group": "Ungrouped variables"}, "factors": {"templateType": "list of numbers", "name": "factors", "description": "", "definition": "[ 3, 8, 3, 8, 3, 7, 8, 3, 3, 7, 8, 8 ]", "group": "Ungrouped variables"}, "ch1c": {"templateType": "anything", "name": "ch1c", "description": "", "definition": "precround(numFromsc*conFactors[ci1c],8)", "group": "Ungrouped variables"}, "choicef": {"templateType": "anything", "name": "choicef", "description": "", "definition": "random(0..11 except[choice,choiceb,choicec, choiced, choicee])", "group": "Ungrouped variables"}, "ci2b": {"templateType": "anything", "name": "ci2b", "description": "", "definition": "random(0..11 except ci1b)", "group": "Ungrouped variables"}, "ch5b": {"templateType": "anything", "name": "ch5b", "description": "", "definition": "precround(numFromsb*conFactors[ci5b],8)", "group": "Ungrouped variables"}, "choicec": {"templateType": "anything", "name": "choicec", "description": "", "definition": "random(0..11 except [choice, choiceb])", "group": "Ungrouped variables"}, "choicee": {"templateType": "anything", "name": "choicee", "description": "", "definition": "random(0..11 except[choice,choiceb,choicec, choiced])", "group": "Ungrouped variables"}, "ch2": {"templateType": "anything", "name": "ch2", "description": "", "definition": "precround(numFroms*conFactors[ci2],8)", "group": "Ungrouped variables"}, "ci1c": {"templateType": "anything", "name": "ci1c", "description": "", "definition": "Factors[choicec]", "group": "Ungrouped variables"}, "numFromsb": {"templateType": "anything", "name": "numFromsb", "description": "", "definition": "random(0..9)+random(1..9)/10 + random(0..9)/100", "group": "Ungrouped variables"}, "ci1": {"templateType": "anything", "name": "ci1", "description": "", "definition": "Factors[choice]", "group": "Ungrouped variables"}, "ci4b": {"templateType": "anything", "name": "ci4b", "description": "", "definition": "random(0..11 except [ci1b, ci2b, ci3b])", "group": "Ungrouped variables"}, "ch1": {"templateType": "anything", "name": "ch1", "description": "", "definition": "precround(numFroms*conFactors[ci1],8)", "group": "Ungrouped variables"}, "ci3": {"templateType": "anything", "name": "ci3", "description": "", "definition": "random(0..11 except [ci1, ci2])", "group": "Ungrouped variables"}, "ch3b": {"templateType": "anything", "name": "ch3b", "description": "", "definition": "precround(numFromsb*conFactors[ci3b],8)", "group": "Ungrouped variables"}, "Tos": {"templateType": "list of strings", "name": "Tos", "description": "

m

", "definition": "[ \"g\", \"kg\", \"$\\\\mu$g\", \"mg\", \"mL\", \"L\", \"L\", \"m\", \"mm\", \"m\", \"m\", \"mm\" ]", "group": "Ungrouped variables"}, "ch2c": {"templateType": "anything", "name": "ch2c", "description": "", "definition": "precround(numFromsc*conFactors[ci2c],8)", "group": "Ungrouped variables"}, "choiced": {"templateType": "anything", "name": "choiced", "description": "", "definition": "random(0..11 except[choice,choiceb,choicec])", "group": "Ungrouped variables"}, "ch5c": {"templateType": "anything", "name": "ch5c", "description": "", "definition": "precround(numFromsc*conFactors[ci5c],8)", "group": "Ungrouped variables"}, "ch5": {"templateType": "anything", "name": "ch5", "description": "", "definition": "precround(numFroms*conFactors[ci5],8)", "group": "Ungrouped variables"}, "ans3": {"templateType": "anything", "name": "ans3", "description": "", "definition": "numFromsc*confactors[Factors[choicef]]", "group": "Ungrouped variables"}, "ch1b": {"templateType": "anything", "name": "ch1b", "description": "", "definition": "precround(numFromsb*conFactors[ci1b],8)", "group": "Ungrouped variables"}, "ch4c": {"templateType": "anything", "name": "ch4c", "description": "", "definition": "precround(numFromsc*conFactors[ci4c],8)", "group": "Ungrouped variables"}, "ch3": {"templateType": "anything", "name": "ch3", "description": "", "definition": "precround(numFroms*conFactors[ci3],8)", "group": "Ungrouped variables"}, "ci4c": {"templateType": "anything", "name": "ci4c", "description": "", "definition": "random(0..11 except [ci1c, ci2c, ci3c])", "group": "Ungrouped variables"}, "ch3c": {"templateType": "anything", "name": "ch3c", "description": "", "definition": "precround(numFromsc*conFactors[ci3c],8)\n", "group": "Ungrouped variables"}, "Temp": {"templateType": "randrange", "name": "Temp", "description": "

Temperature Values

", "definition": "random(0..1600#1)", "group": "Unnamed group"}, "ci5b": {"templateType": "anything", "name": "ci5b", "description": "", "definition": "random(0..11 except [ci1b, ci2b, ci3b, ci4b])", "group": "Ungrouped variables"}, "ci5": {"templateType": "anything", "name": "ci5", "description": "", "definition": "random(0..11 except [ci1, ci2, ci3, ci4])", "group": "Ungrouped variables"}, "from1": {"templateType": "anything", "name": "from1", "description": "", "definition": "Froms[choiced]", "group": "Ungrouped variables"}, "ans2": {"templateType": "anything", "name": "ans2", "description": "", "definition": "numFromsb*confactors[Factors[choicee]]", "group": "Ungrouped variables"}, "ch4": {"templateType": "anything", "name": "ch4", "description": "", "definition": "precround(numFroms*conFactors[ci4],8)", "group": "Ungrouped variables"}, "ch2b": {"templateType": "anything", "name": "ch2b", "description": "", "definition": "precround(numFromsb*conFactors[ci2b],8)", "group": "Ungrouped variables"}, "numFromsc": {"templateType": "anything", "name": "numFromsc", "description": "", "definition": "random(0,1,2, 4, 5, 8)+random(1,2,4,5,8)/10 + random(0,1,2,4,5,8,9)/100", "group": "Ungrouped variables"}, "conFactors": {"templateType": "list of numbers", "name": "conFactors", "description": "", "definition": "[ 1000000, 100000, 10000, 1000, 100, 10, 0.1, 0.01, 0.001, 0.0001, 0.00001, 0.000001 ]", "group": "Ungrouped variables"}, "choiceb": {"templateType": "anything", "name": "choiceb", "description": "", "definition": "random(0..11 except choice)", "group": "Ungrouped variables"}, "ch4b": {"templateType": "anything", "name": "ch4b", "description": "", "definition": "precround(numFromsb*conFactors[ci4b],8)", "group": "Ungrouped variables"}, "Froms": {"templateType": "list of strings", "name": "Froms", "description": "", "definition": "[ \"kg\", \"g\", \"mg\", \"$\\\\mu$g\", \"L\", \"cL\", \"mL\", \"km\", \"m\", \"cm\", \"mm\", \"$\\\\mu$m\" ]", "group": "Ungrouped variables"}, "ci2c": {"templateType": "anything", "name": "ci2c", "description": "", "definition": "random(0..11 except ci1c)", "group": "Ungrouped variables"}, "numFroms": {"templateType": "anything", "name": "numFroms", "description": "", "definition": "random(0..9)+random(1..9)/10", "group": "Ungrouped variables"}, "ci3c": {"templateType": "anything", "name": "ci3c", "description": "", "definition": "random(0..11 except [ci1c, ci2c])", "group": "Ungrouped variables"}, "TForm": {"templateType": "anything", "name": "TForm", "description": "", "definition": "273.15+Temp", "group": "Unnamed group"}, "ans1": {"templateType": "anything", "name": "ans1", "description": "", "definition": "numFroms*confactors[Factors[choiced]]", "group": "Ungrouped variables"}, "ci1b": {"templateType": "anything", "name": "ci1b", "description": "", "definition": "Factors[choiceb]", "group": "Ungrouped variables"}, "ci2": {"templateType": "anything", "name": "ci2", "description": "", "definition": "random(0..11 except ci1)", "group": "Ungrouped variables"}, "ci4": {"templateType": "anything", "name": "ci4", "description": "", "definition": "random(0..11 except [ci1, ci2, ci3])", "group": "Ungrouped variables"}, "ci3b": {"templateType": "anything", "name": "ci3b", "description": "", "definition": "random(0..11 except [ci1b, ci2b])", "group": "Ungrouped variables"}}, "ungrouped_variables": ["Froms", "Tos", "factors", "conFactors", "choice", "numFroms", "ci1", "ci2", "ci3", "ci4", "ci5", "ch1", "ch2", "ch3", "ch4", "ch5", "numFromsb", "choiceb", "ci1b", "ci2b", "ci3b", "ci4b", "ci5b", "ch1b", "ch2b", "ch3b", "ch4b", "ch5b", "choicec", "numFromsc", "ci1c", "ci2c", "ci3c", "ci4c", "ci5c", "ch1c", "ch2c", "ch3c", "ch4c", "ch5c", "choiced", "ans1", "from1", "choicee", "ans2", "choicef", "ans3"], "variablesTest": {"condition": "", "maxRuns": 100}, "functions": {}, "type": "question"}, {"name": "Question 5: Beer-Lambert Law", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "lauren daly", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2330/"}], "statement": "

The Beer-Lambert law describes the linear relationship between absorbance and concentration of an absorbing species i.e. by detecting how much light has been absorbed by a sample, you can determine the concentration[how much solute] is in the solution. 

", "rulesets": {}, "preamble": {"js": "", "css": ""}, "tags": [], "variable_groups": [], "parts": [{"shuffleChoices": false, "prompt": "

Which of the following represents beer-lambert law? 

", "choices": ["

A = abc

", "

a = Abc

", "

\u0190 = abc

", "

T = abc

"], "variableReplacements": [], "displayType": "radiogroup", "type": "1_n_2", "distractors": ["", "", "", ""], "minMarks": 0, "showCorrectAnswer": true, "scripts": {}, "displayColumns": 0, "marks": 0, "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst", "maxMarks": 0, "matrix": ["1", 0, 0, 0]}, {"variableReplacementStrategy": "originalfirst", "variableReplacements": [], "scripts": {}, "prompt": "

What does the 'b' represent in beer-lambert law?

", "answer": "Pathlength|Path length|Length", "marks": 1, "displayAnswer": "Pathlength", "type": "patternmatch", "matchMode": "regex", "showFeedbackIcon": true, "showCorrectAnswer": true}, {"variableReplacementStrategy": "originalfirst", "variableReplacements": [], "scripts": {}, "prompt": "

What does the 'c' represent in Beer-lambert Law? 

", "answer": "Concentration|Conc", "marks": 1, "displayAnswer": "Concentration", "type": "patternmatch", "matchMode": "regex", "showFeedbackIcon": true, "showCorrectAnswer": true}], "variablesTest": {"maxRuns": 100, "condition": ""}, "functions": {}, "advice": "", "ungrouped_variables": [], "variables": {}, "metadata": {"licence": "None specified", "description": ""}, "type": "question"}, {"name": "Questions 3: Infrared Spectroscopy", "extensions": [], "custom_part_types": [], "resources": [["question-resources/Beer_law.jpg", "/srv/numbas/media/question-resources/Beer_law.jpg"], ["question-resources/Beer_law_34isDaP.jpg", "/srv/numbas/media/question-resources/Beer_law_34isDaP.jpg"], ["question-resources/IR_spectra.jpg", "/srv/numbas/media/question-resources/IR_spectra.jpg"], ["question-resources/IR_co2.jpg", "/srv/numbas/media/question-resources/IR_co2.jpg"], ["question-resources/HCL.jpg", "/srv/numbas/media/question-resources/HCL.jpg"], ["question-resources/co2.jpg", "/srv/numbas/media/question-resources/co2.jpg"], ["question-resources/O2.jpg", "/srv/numbas/media/question-resources/O2.jpg"], ["question-resources/new.jpg", "/srv/numbas/media/question-resources/new.jpg"], ["question-resources/FYP.jpg", "/srv/numbas/media/question-resources/FYP.jpg"], ["question-resources/FYP_1.jpg", "/srv/numbas/media/question-resources/FYP_1.jpg"], ["question-resources/FYP_2.png", "/srv/numbas/media/question-resources/FYP_2.png"], ["question-resources/FYP.png", "/srv/numbas/media/question-resources/FYP.png"], ["question-resources/h2o.jpg", "/srv/numbas/media/question-resources/h2o.jpg"], ["question-resources/h200.jpg", "/srv/numbas/media/question-resources/h200.jpg"]], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "lauren daly", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2330/"}], "functions": {}, "preamble": {"js": "", "css": ""}, "variablesTest": {"maxRuns": 100, "condition": ""}, "parts": [{"displayType": "radiogroup", "scripts": {}, "shuffleChoices": false, "displayColumns": "1", "showFeedbackIcon": true, "matrix": [0, "1", 0, 0], "showCorrectAnswer": true, "marks": 0, "choices": ["

C-H stretch

", "

O-H Stretch

", "

C-C stretch

", "

C-O stretch

"], "minMarks": 0, "prompt": "

\n

Analysing the above spectra for ethanol what functional group is most likely to be found at 3391cm-1?

", "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "type": "1_n_2", "maxMarks": 0, "distractors": ["", "", "", ""]}, {"displayType": "radiogroup", "scripts": {}, "shuffleChoices": false, "displayColumns": "0", "showFeedbackIcon": true, "matrix": ["0", "1", "0", 0], "showCorrectAnswer": false, "marks": 0, "choices": ["

HCl

\n

", "

H2

\n

", "

H20

\n

", "

Asymmetric CO2

\n

"], "minMarks": 0, "prompt": "

For a molecule to absorb infrared radiation it must undergo a net change in dipole moment as a result of vibrational or rotational motion.

\n

Which of the following molecules are IR INACTIVE: 

", "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "type": "1_n_2", "maxMarks": 0, "distractors": ["", "", "", ""]}], "variable_groups": [{"name": "Unnamed group", "variables": []}], "ungrouped_variables": [], "variables": {}, "statement": "

Infrared spectroscopy (vibrational spectroscopy) involves the interaction of infrared radiation with matter. One of the most common applications of infrared spectroscopy is to identify organic compounds.

", "advice": "", "tags": [], "rulesets": {}, "metadata": {"licence": "None specified", "description": ""}, "type": "question"}, {"name": "Question 4: Scientific Notation", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "lauren daly", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2330/"}], "preamble": {"css": "", "js": ""}, "variable_groups": [], "metadata": {"licence": "None specified", "description": ""}, "parts": [{"choices": ["

2.0 x 10$^5$ moles

", "

2.0 x 10-4 moles

", "

2.0 moles

", "

2.0 x 10-5 moles

"], "matrix": ["0", 0, 0, "1"], "distractors": ["", "", "", ""], "type": "1_n_2", "maxMarks": 0, "prompt": "

What is .00002 moles in scientific notation?

", "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst", "scripts": {}, "shuffleChoices": false, "minMarks": 0, "variableReplacements": [], "displayColumns": "1", "showCorrectAnswer": true, "marks": 0, "displayType": "radiogroup"}, {"choices": ["

1 mole in 50cm3

", "

1 mole in 1000cm3

", "

1 mole in 100cm3

", "

1 mole in 10cm3

"], "matrix": [0, "1", 0, 0], "distractors": ["", "", "", ""], "type": "1_n_2", "maxMarks": 0, "prompt": "

Which of the following describes 1 mole/dm3?

", "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst", "scripts": {}, "shuffleChoices": false, "minMarks": 0, "variableReplacements": [], "displayColumns": "1", "showCorrectAnswer": true, "marks": 0, "displayType": "radiogroup"}, {"choices": ["

Grams of solute in 100cm$^3$ of solution

", "

Number of Moles in 100cmof solution

", "

Grams of solute in 1000cm$^3$ of solution

", "

Number of Moles in 1000cm$^3$ of solution

"], "matrix": [0, 0, 0, "1"], "distractors": ["", "", "", ""], "type": "1_n_2", "maxMarks": 0, "prompt": "

Which of the following best describes Molarity? 

", "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst", "scripts": {}, "shuffleChoices": false, "minMarks": 0, "variableReplacements": [], "displayColumns": "1", "showCorrectAnswer": true, "marks": 0, "displayType": "radiogroup"}], "statement": "", "rulesets": {}, "functions": {}, "variables": {}, "tags": [], "ungrouped_variables": [], "advice": "", "variablesTest": {"maxRuns": 100, "condition": ""}, "type": "question"}]}], "showQuestionGroupNames": false, "navigation": {"allowregen": true, "preventleave": true, "browse": true, "reverse": true, "showresultspage": "oncompletion", "showfrontpage": true, "onleave": {"message": "", "action": "none"}}, "percentPass": 0, "timing": {"allowPause": true, "timeout": {"message": "", "action": "none"}, "timedwarning": {"message": "", "action": "none"}}, "duration": 0, "name": "FYP - Second Year Focus Group", "showstudentname": true, "type": "exam", "contributors": [{"name": "lauren daly", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2330/"}], "extensions": [], "custom_part_types": [], "resources": [["question-resources/Beer_law.jpg", "/srv/numbas/media/question-resources/Beer_law.jpg"], ["question-resources/Beer_law_34isDaP.jpg", "/srv/numbas/media/question-resources/Beer_law_34isDaP.jpg"], ["question-resources/IR_spectra.jpg", "/srv/numbas/media/question-resources/IR_spectra.jpg"], ["question-resources/IR_co2.jpg", "/srv/numbas/media/question-resources/IR_co2.jpg"], ["question-resources/HCL.jpg", "/srv/numbas/media/question-resources/HCL.jpg"], ["question-resources/co2.jpg", "/srv/numbas/media/question-resources/co2.jpg"], ["question-resources/O2.jpg", "/srv/numbas/media/question-resources/O2.jpg"], ["question-resources/new.jpg", "/srv/numbas/media/question-resources/new.jpg"], ["question-resources/FYP.jpg", "/srv/numbas/media/question-resources/FYP.jpg"], ["question-resources/FYP_1.jpg", "/srv/numbas/media/question-resources/FYP_1.jpg"], ["question-resources/FYP_2.png", "/srv/numbas/media/question-resources/FYP_2.png"], ["question-resources/FYP.png", "/srv/numbas/media/question-resources/FYP.png"], ["question-resources/h2o.jpg", "/srv/numbas/media/question-resources/h2o.jpg"], ["question-resources/h200.jpg", "/srv/numbas/media/question-resources/h200.jpg"]]}