A 68.0 kg person uses 214 kJ of energy to walk 1.00 km. This energy comes from “burning" glucose (Burning 1.00 g of glucose produces 15.7 kJ of heat.), but only about 30.0% of the heat of combustion of glucose can be used for propulsion. The rest is used for other bodily functions or is "wasted" as heat. Assuming that a "sugar-coated" breakfast cereal contains 29.0% sugar (which can be considered glucose) and no other energy source, calculate how many grams of cereal provide enough energy to walk 1.00 km.
A 68.0 kg person uses 214 kJ of energy to walk 1.00 km. This energy comes from “burning" glucose (Burning 1.00 g of glucose produces 15.7 kJ of heat.), but only about 30.0% of the heat of combustion of glucose can be used for propulsion. The rest is used for other bodily functions or is "wasted" as heat. Assuming that a "sugar-coated" breakfast cereal contains 29.0% sugar (which can be considered glucose) and no other energy source, calculate how many grams of cereal provide enough energy to walk 1.00 km.
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 38E: Which is the least expensive source of energy in kilojoules per dollar: a box of breakfast cereal...
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Transcribed Image Text:A 68.0 kg person uses 214 kJ of energy to walk 1.00 km. This energy comes from "burning" glucose (Burning 1.00 g of glucose produces
15.7 kJ of heat.), but only about 30.0% of the heat of combustion of glucose can be used for propulsion. The rest is used for other
bodily functions or is "wasted" as heat. Assuming that a "sugar-coated" breakfast cereal contains 29.0% sugar (which can be
considered glucose) and no other energy source, calculate how many grams of cereal provide enough energy to walk 1.00 km.
i
g cereal
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