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General, Organic, and Biological Chemistry: Structures of Life | 4th Edition | ISBN: 9780321750891 | Authors: Karen C. Timberlake
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For lunch, your friend, who has a mass of 70.0 kg, has a

Chapter 2, Problem 62UTC

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QUESTION:

For lunch, your friend, who has a mass of 70.0 kg, has a slice of pizza, a cola soft drink, and ice cream. (2.6)a. Using Table 2.9, calculate the total kilocalories for each food type in this meal (round off the kilocalories to the tens place).ItemCarbohydrate (g)Fat (g)Protein (g)Pizza291013Cola5100Ice cream44288TABLE 2.9 Typical Energy (caloric) Values for the Three Food TypesFood TypeKJ/gKcal/gCarbohydrate174Fat389Protein174b. Using Table 2.12, determine the number of hours of sitting needed to burn off the kilocalories in this meal.c. Using Table 2.12, determine the number of hours of swimming needed to burn off the kilocalories in this meal.TABLE 2.12 Energy Expended by a 70.0-kg (154-Ib) AdultActivityEnergy (KJ/h)Energy (Kcal/h)sleeping25060Sitting420100Walking840200Swimming2100500Running310070

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QUESTION:

For lunch, your friend, who has a mass of 70.0 kg, has a slice of pizza, a cola soft drink, and ice cream. (2.6)a. Using Table 2.9, calculate the total kilocalories for each food type in this meal (round off the kilocalories to the tens place).ItemCarbohydrate (g)Fat (g)Protein (g)Pizza291013Cola5100Ice cream44288TABLE 2.9 Typical Energy (caloric) Values for the Three Food TypesFood TypeKJ/gKcal/gCarbohydrate174Fat389Protein174b. Using Table 2.12, determine the number of hours of sitting needed to burn off the kilocalories in this meal.c. Using Table 2.12, determine the number of hours of swimming needed to burn off the kilocalories in this meal.TABLE 2.12 Energy Expended by a 70.0-kg (154-Ib) AdultActivityEnergy (KJ/h)Energy (Kcal/h)sleeping25060Sitting420100Walking840200Swimming2100500Running310070

ANSWER:

Solution 62 UTCStep 1 of 3a.Here, we have to calculate the kilocalories in each food type.The given Item Carbohydrates Fat Protein Pizza 29 10 13 Cola 51 0 0 Ice cream 44 28 8Let’s write the equality and conversion factorsFor, Carbohydrate1 g = 4kCalSo, the conversion factors are and For, Fat1 g = 9kCalSo, the conversion factors are and For protein1 g = 4kCalSo, the conversion factors are and Let’s calculate the total amount of energy obtained from Pizza, cola and ice cream. Pizza + + = 258 kcal.The energy obtained from pzza is 258 kcal.Cola = 204 kcal.Energy obtained from cola is 204 kcal.Ice cream + + = 460 kcal.Let’s calculate the total energy obtained from diet258 kcal + 204 kcal + 460 kcal = 920 kcal.Therefore, the total energy obtained from diet is 920 kcal.________________________________________________________________________

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