How many kilocalories of heat does an expenditure of 703 kJ produce? _____ kcal A pound...
- How many kilocalories of heat does an expenditure of 703 kJ produce?
_____ kcal
- A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 151 lb person burn during 7 hours of sleep? (Note that 1 Cal = 1 kcal.)______Cal
- How much heat in kcal must be added to 0.41 kg of water at room temperature (20°C) to raise its temperature to 47°C?
______ kcal
Homework Answers
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How many kilocalories of heat does an expenditure of 703 kJ
produce?
_____ kcal
A pound...
1.A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When...
1.A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.40 Cal/h for every pound of body weight. How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 145 lb.) h 2.On a brisk walk, a person burns about 365 Cal/h. At this rate, how many hours of brisk walking would it take to lose 1...
1. A college student produces about 126 kcal of heat per hour on the average. What...
1. A college student produces about 126 kcal of heat per hour on the average. What is the rate of energy production in joules? __________kJ/h 2. On a brisk walk, a person burns about 330 Cal/h. At this rate, how many hours of brisk walking would it take to lose 1 lb of body fat? (A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal.) __________ h 3.How much heat is necessary to change 495...
Each pound of fat contains 3500 food calories. When the body metabolizes food, 80.5% of this...
Each pound of fat contains 3500 food calories. When the body
metabolizes food, 80.5% of this energy goes to heat. Suppose you
decide to run without stopping, an activity that produces 1340 W of
metabolic power for a typical person.
Part A) For how many hours must you run to burn up 1 lb of
fat?
Part B) If you followed your planned exercise program, how much
heat would your body produce when you burn up a pound of fat?...
A sleeping 68 kg man has a metabolic power of 69 W. How many Calories does he burn during an 8.0 hour sleep? Delta E =...
A sleeping 68 kg man has a metabolic power of 69 W. How many Calories does he burn during an 8.0 hour sleep? Delta E = ________ Cal
32. Which of the following is a chemical change? A) cutting a rope B) bending a...
32. Which of the following is a chemical change? A) cutting a rope B) bending a steel rod C) making a snowman D) burning sugar E) melting gold 33. How many calories are required to raise the temperature of a 150. g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 cal/g °C. Hint: Heat- Mass x specific heat x Temp. change A) 4.62 cal B) 116 cal zamx5. HDT f C) 22500...
7. How many calories are required to increase the temperature of 13 g of alcohol from...
7. How many calories are required to increase the temperature of 13 g of alcohol from 11 °C to 23 specific heat of alcohol is 0.59 cal/g °C. A. 83 cal B. 0.54 cal C. 92 cal D. 170 cal E. 0.63 cal 9. A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein How many kcal of energy does the cheeseburger contain? (The caloric values are: 4 kcal/g...
please answee as much questions are you can greatly appredcited 11. + -/1.5 points How many Joules of heat are re...
please answee as much questions are you can greatly
appredcited
11. + -/1.5 points How many Joules of heat are required to raise the temperature of 13 g of aluminum from 23 °C to 55 °C?! 12. +-/1.5 points How many kilocalories of heat are required to evaporate 1.13 kg of water that is initially at 100.0 °C? kcal 13. +-/1.6 points How many Joules of heat are required to melt 0.21 kg of silver that is initially at 27...
Each pound of fat contains 3500 food calories. When the body
metabolizes food, 80.5% of this energy goes to heat. Suppose you
decide to run without stopping, an activity that produces 1340 W of
metabolic power for a typical person.
Part A) For how many hours must you run to burn up 1 lb of
fat?
Part B) If you followed your planned exercise program, how much
heat would your body produce when you burn up a pound of fat?...
32. Which of the following is a chemical change? A) cutting a rope B) bending a steel rod C) making a snowman D) burning sugar E) melting gold 33. How many calories are required to raise the temperature of a 150. g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 cal/g °C. Hint: Heat- Mass x specific heat x Temp. change A) 4.62 cal B) 116 cal zamx5. HDT f C) 22500...
7. How many calories are required to increase the temperature of 13 g of alcohol from 11 °C to 23 specific heat of alcohol is 0.59 cal/g °C. A. 83 cal B. 0.54 cal C. 92 cal D. 170 cal E. 0.63 cal 9. A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein How many kcal of energy does the cheeseburger contain? (The caloric values are: 4 kcal/g...
please answee as much questions are you can greatly
appredcited
11. + -/1.5 points How many Joules of heat are required to raise the temperature of 13 g of aluminum from 23 °C to 55 °C?! 12. +-/1.5 points How many kilocalories of heat are required to evaporate 1.13 kg of water that is initially at 100.0 °C? kcal 13. +-/1.6 points How many Joules of heat are required to melt 0.21 kg of silver that is initially at 27...
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