nge for water (6 - 5)10. Heat gained by water(Show calculations.)11. Heat (cal) given off by burning of food sample12. Heat (kcal) given off by burning of food sample13. Mass of food undergoing combustion (4–7)14. Energy value (kcal/g) of food sample(Show calculations.)Questions and ProblemsQ6 A 0.25 g sample of a pretzel is burned. The heat it gives off is used to heat 50. gof water from 18 °C to 42 °C. What is the energy value of the pretzel, in kcal/g?

Given : Mass of pretzel = 0.25 g Mass of water = 50 g Initial temperature of water = 18 oC And final…

Answered: A 0.25 g sample of a pretzel is burned.…

A 0.25 g sample of a pretzel is burned. The heat it gives off is used to heat 50. g of water from 18 °C to 42 °C. What is the energy value of the pretzel, in kcal/g?

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter4: Chemical Reactions

Section: Chapter Questions

Problem 4.100P

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Question

nge for water (6 - 5)
10. Heat gained by water
(Show calculations.)
11. Heat (cal) given off by burning of food sample
12. Heat (kcal) given off by burning of food sample
13. Mass of food undergoing combustion (4–7)
14. Energy value (kcal/g) of food sample
(Show calculations.)
Questions and Problems
Q6 A 0.25 g sample of a pretzel is burned. The heat it gives off is used to heat 50. g
of water from 18 °C to 42 °C. What is the energy value of the pretzel, in kcal/g?

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