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Part A and B / Course Home openvellum.ecollege.com/course.htmicourseld-142562618OpenVellumHMAC a402ddBebe5b92a3034629bo422b2b6f 10001 MasteringPhysics Chapter 11 Google Chrome Secure https://session.master ngph Chapter 11 Problem 11.8 es Problem 118 Part A How much energy is this in joules? Express your answer using two significant figures. An energy bar contains 22 g of carbohydrates ents Tools E- Area My AnswersSie p Settings Part B How much energy is this in calorias? Express your answer using two signilficant figures Es O Type here to

Explanation / Answer

According to http://www.merckmanuals.com/en-pr/home/disorders-of-nutrition/overview-of-nutrition/carbohydrates,-proteins,-and-fats

1 g carbohydrate provides energy = 4 cal = 4 x 4.186 = 16.744 J

A) 28g carbohydrate = 28 x 16.744 = 468.832 J

B) 28g carbohydrate = 28 x 4 = 112 cal

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