// Numbas version: exam_results_page_options
{"name": "Chemical quantities tutorial practice questions", "metadata": {"description": "", "licence": "None specified"}, "duration": 0, "percentPass": 0, "showQuestionGroupNames": false, "showstudentname": true, "question_groups": [{"name": "Group", "pickingStrategy": "all-ordered", "pickQuestions": 1, "questionNames": ["", "", "", "", "", "", "", "", ""], "questions": [{"name": "Question 1", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "<ol>\n<li>It is often necessary to calculate the concentration of a solution from the mass of solute (e.g., sucrose) and the volume of solvent (e.g., water).</li>\n</ol>", "advice": "", "rulesets": {}, "variables": {"m": {"name": "m", "group": "Ungrouped variables", "definition": "random(0.1 .. 10#0.1)", "description": "<p>The mass of sucrose in g</p>", "templateType": "randrange"}, "v": {"name": "v", "group": "Ungrouped variables", "definition": "random(0.01 .. 1#0.01)", "description": "<p>Volume in dm3</p>", "templateType": "randrange"}, "c": {"name": "c", "group": "Ungrouped variables", "definition": "decimal (m/v)", "description": "", "templateType": "anything"}, "c_sig": {"name": "c_sig", "group": "Ungrouped variables", "definition": "siground (c,4)", "description": "", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["m", "v", "c", "c_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>A flask contains {m} g C<sub>12</sub>H<sub>22</sub>O<sub>11</sub>&nbsp;(sucrose) dissolved in&nbsp;{v} dm<sup>3</sup>&nbsp;of water. What is the concentration of the solution in g.dm<sup>-3</sup>?</p>", "minValue": "c_sig", "maxValue": "c_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 2", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "<p>It is often necessary to calculate the mass of a solute needed to prepare a specific molar concentration of solution at a given volume.</p>", "advice": "", "rulesets": {}, "variables": {"c": {"name": "c", "group": "Ungrouped variables", "definition": "random(0.1 .. 10#0.05)", "description": "<p>Concentration of lithium phosphate in mol dm3</p>", "templateType": "randrange"}, "v": {"name": "v", "group": "Ungrouped variables", "definition": "random(0.25 .. 10#0.05)", "description": "<p>Volume in dm3</p>", "templateType": "randrange"}, "m": {"name": "m", "group": "Ungrouped variables", "definition": "decimal (c*115.79*v)", "description": "<p>Mass of lithium phosphate in g.</p>", "templateType": "anything"}, "m_sig": {"name": "m_sig", "group": "Ungrouped variables", "definition": "siground (m,4)", "description": "<p>Mass of lithium phosphate in g to 3 significant figures.</p>", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["c", "v", "m", "m_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What mass of lithium phosphate (g) would you need to make up {v} dm<sup>3&nbsp;</sup>lithium phosphate solution with a concentration of {c} mol dm<sup>-3</sup>?</p>", "minValue": "m_sig", "maxValue": "m_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 3", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "variables": {"c": {"name": "c", "group": "Ungrouped variables", "definition": "random(0.5 .. 5#0.1)", "description": "<p>Concentration of iron (II) nitrite in mol dm3</p>", "templateType": "randrange"}, "v": {"name": "v", "group": "Ungrouped variables", "definition": "random(50 .. 1000#50)", "description": "<p>Volume in cm3</p>", "templateType": "randrange"}, "m": {"name": "m", "group": "Ungrouped variables", "definition": "decimal (c*147.856*v/1000)", "description": "<p>Mass of iron (II) nitrite in g.</p>", "templateType": "anything"}, "m_sig": {"name": "m_sig", "group": "Ungrouped variables", "definition": "siground (m,4)", "description": "<p>Mass of iron (II) nitrite in g to 3 significant figures.</p>", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["c", "v", "m", "m_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>If you evaporated&nbsp;{v} cm<sup>3</sup> of a&nbsp;{c} mol dm<sup>-3</sup> solution of iron (II) nitrite, what mass (g) of iron (II) nitrite [Fe(NO<sub>2</sub>)<sub>2</sub>] would you recover?</p>\n<p></p>\n<p></p>", "minValue": "m_sig", "maxValue": "m_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 4", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "variables": {"c": {"name": "c", "group": "Ungrouped variables", "definition": "random(0.5 .. 5#0.1)", "description": "<p>Concentration of NaCl in mol dm3</p>", "templateType": "randrange"}, "v": {"name": "v", "group": "Ungrouped variables", "definition": "random(50 .. 1000#50)", "description": "<p>Volume in cm3</p>", "templateType": "randrange"}, "m": {"name": "m", "group": "Ungrouped variables", "definition": "decimal (c*v/1000)", "description": "<p>Mass of sodium chloride in moles</p>", "templateType": "anything"}, "m_sig": {"name": "m_sig", "group": "Ungrouped variables", "definition": "siground (m,4)", "description": "<p>Mass of iron (II) nitrite in g to 3 significant figures.</p>", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["c", "v", "m", "m_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p></p>\n<p>How many moles of NaCl are present in&nbsp;{v} cm<sup>3</sup> a&nbsp;{c} mol dm<sup>-3</sup> NaCl solution? </p>\n<p></p>\n<p></p>", "minValue": "m_sig", "maxValue": "m_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 5", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "variables": {"c": {"name": "c", "group": "Ungrouped variables", "definition": "random(0.5 .. 5#0.1)", "description": "<p>Concentration of H2SO4 in mol dm3</p>", "templateType": "randrange"}, "v": {"name": "v", "group": "Ungrouped variables", "definition": "random(0.05 .. 5#0.05)", "description": "<p>Volume in dm3</p>", "templateType": "randrange"}, "m": {"name": "m", "group": "Ungrouped variables", "definition": "decimal (c*v)", "description": "<p>Mass of H2SO4 in moles</p>", "templateType": "anything"}, "m_sig": {"name": "m_sig", "group": "Ungrouped variables", "definition": "siground (m,4)", "description": "<p>Mass of iron (II) nitrite in g to 3 significant figures.</p>", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["c", "v", "m", "m_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>How many moles of&nbsp;H<sub>2</sub>SO<sub>4</sub> are present in&nbsp;{v} dm<sup>3</sup> a&nbsp;{c} mol dm<sup>-3</sup>&nbsp;H<sub>2</sub>SO<sub>4</sub> solution?</p>", "minValue": "m_sig", "maxValue": "m_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 6", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "variables": {"c": {"name": "c", "group": "Ungrouped variables", "definition": "random(0.1 .. 50#0.1)", "description": "<p>Concentration of Ca(OH)2 in mol dm3</p>", "templateType": "randrange"}, "v": {"name": "v", "group": "Ungrouped variables", "definition": "random(50 .. 5000#50)", "description": "<p>Volume in cm3</p>", "templateType": "randrange"}, "m": {"name": "m", "group": "Ungrouped variables", "definition": "decimal (c*74.093*v/1000)", "description": "<p>Mass of Ca(OH)2 in g</p>", "templateType": "anything"}, "m_sig": {"name": "m_sig", "group": "Ungrouped variables", "definition": "siground (m,4)", "description": "<p>Mass of iron (II) nitrite in g to 3 significant figures.</p>", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["c", "v", "m", "m_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>How many grams of Ca(OH)<sub>2</sub> are needed to produce&nbsp;{v} cm<sup>3</sup> of Ca(OH)<sub>2</sub> solution with a concentration of&nbsp;{c} mol dm<sup>-3</sup>? <br/> </p>\n<p></p>\n<p></p>", "minValue": "m_sig", "maxValue": "m_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 7", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "variables": {"c1": {"name": "c1", "group": "Ungrouped variables", "definition": "12", "description": "<p>Concentration of&nbsp;hydrochloric acid</p>", "templateType": "number"}, "v2": {"name": "v2", "group": "Ungrouped variables", "definition": "random(50 .. 1000#50)", "description": "<p>Volume in cm3</p>", "templateType": "randrange"}, "v1": {"name": "v1", "group": "Ungrouped variables", "definition": "decimal (c2*v2/c1/1000)", "description": "<p>Volume of 12 mol dm-3 in dm3</p>", "templateType": "anything"}, "v1_sig": {"name": "v1_sig", "group": "Ungrouped variables", "definition": "siground (v1,4)", "description": "<p>Mass of iron (II) nitrite in g to 3 significant figures.</p>", "templateType": "anything"}, "c2": {"name": "c2", "group": "Ungrouped variables", "definition": "random(0.05 .. 12#0.05)", "description": "<p>Final concentration of hydrochloric acid in mol dm-3</p>", "templateType": "randrange"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["c1", "v2", "c2", "v1", "v1_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>Commercially produced concentrated hydrochloric acid has a concentration of 12.0 mol dm<sup>-3</sup>. What volume of concentrated acid (in dm<sup>3</sup>) would have to be diluted to prepare {v2}&nbsp;cm<sup>3 </sup>of&nbsp;{c2} mol dm<sup>-3</sup> HCl solution?</p>", "minValue": "v1_sig", "maxValue": "v1_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 8", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "variables": {"v1": {"name": "v1", "group": "Ungrouped variables", "definition": "random(10 .. 500#10)", "description": "<p>Concentration of HNO3 in cm3.</p>", "templateType": "randrange"}, "v2": {"name": "v2", "group": "Ungrouped variables", "definition": "random(1000 .. 5000#250)", "description": "<p>Final volume in cm3</p>", "templateType": "randrange"}, "c2": {"name": "c2", "group": "Ungrouped variables", "definition": "decimal (c1*v1/v2)", "description": "<p>Final concentration of HNO3.</p>", "templateType": "anything"}, "c2_sig": {"name": "c2_sig", "group": "Ungrouped variables", "definition": "siground (c2,4)", "description": "<p>Mass of iron (II) nitrite in g to 3 significant figures.</p>", "templateType": "anything"}, "c1": {"name": "c1", "group": "Ungrouped variables", "definition": "random(0.5 .. 10#0.25)", "description": "<p>Concentration of HNO3 in mol dm-3</p>", "templateType": "randrange"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["v1", "v2", "c1", "c2", "c2_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p></p>\n<p>If&nbsp;{v1} cm<sup>3</sup> of&nbsp;{c1} mol dm<sup>-3</sup> HNO<sub>3</sub> is diluted to a total volume of&nbsp;{v2}&nbsp;cm<sup>3</sup>, what is the concentration (mol dm<sup>-3</sup>)of the resulting solution?</p>\n<p></p>\n<p></p>\n<p></p>", "minValue": "c2_sig", "maxValue": "c2_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Question 9", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "tags": [], "metadata": {"description": "", "licence": "None specified"}, "statement": "<p>The food we eat is degraded in our bodies to provide energy for growth and function. A general overall equation for this complex process represents degradation of glucose (C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>) to carbon dioxide and water:<br/> <br/> C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>&nbsp; +&nbsp; 6O<sub>2</sub>&nbsp; &rarr;&nbsp; 6CO<sub>2</sub>&nbsp; +&nbsp; 6H<sub>2</sub>O<br/> </p>", "advice": "", "rulesets": {}, "variables": {"m1": {"name": "m1", "group": "Ungrouped variables", "definition": "random(1 .. 1000#1)", "description": "<p>Mass of glucose in g</p>", "templateType": "randrange"}, "m2": {"name": "m2", "group": "Ungrouped variables", "definition": "decimal (m1/180.156*264.06)", "description": "", "templateType": "anything"}, "m2_sig": {"name": "m2_sig", "group": "Ungrouped variables", "definition": "siground (m2,4)", "description": "", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["m1", "m2", "m2_sig"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>If {m1} g of glucose is consumed by the body over a certain period, what is the mass (g) of carbon dioxide produced?</p>", "minValue": "m2_sig", "maxValue": "m2_sig", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "sigfig", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}]}], "navigation": {"allowregen": true, "reverse": true, "browse": true, "allowsteps": true, "showfrontpage": true, "showresultspage": "oncompletion", "navigatemode": "sequence", "onleave": {"action": "none", "message": ""}, "preventleave": true, "startpassword": ""}, "timing": {"allowPause": true, "timeout": {"action": "none", "message": ""}, "timedwarning": {"action": "none", "message": ""}}, "feedback": {"showactualmark": true, "showtotalmark": true, "showanswerstate": true, "allowrevealanswer": true, "advicethreshold": 0, "intro": "", "reviewshowscore": true, "reviewshowfeedback": true, "reviewshowexpectedanswer": true, "reviewshowadvice": true, "feedbackmessages": []}, "contributors": [{"name": "Tony Killard", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/8757/"}], "extensions": [], "custom_part_types": [], "resources": []}