In an Experiment,15

question 156

Multiple Choice

In an experiment,15.0 cm³ of glucose (C₆H₁₂O₆,180.2 g/mol,1.54 g/cm³) undergoes combustion to form carbon dioxide and water.The energy released is completely transferred to 1150 grams of water (c_p = 1.00cal/(g ^{. o}C) ,which then experiences a temperature increase of 74.9°C.What is the food value (Cal/g) of glucose? (1 Cal = 4.184 kJ)

• A)1.02 Cal/g
• B)20.7 Cal/g
• C)5.74 Cal/g
• D)3.73 Cal/g
• E)15.4 Cal/g

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