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 (cp = 1.00cal/(g . oC) ,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
Correct Answer:
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