Please choose the letter of the correct answer. I will rate your answer   3. Extra energy is stored in your body as a. proteins. b. carbohydrates. c. starches. d. fats.   4. Early chemists thought that heat was a kind of a. vapor. b. solid. c. fluid. d. plasma.   5. A nutritional calorie is equal to a. 1 calorie. b. 1000 calories. c. 4.184. d. 1 fat calorie.

A 7.50 g marshmallow is placed in a calorimeter and burned in excess oxygen. The temperature increases by 4.69°C. The calorimeter has a heat capacity of 22.3 kJ/°C. What is the approximate food value of marshmallows in Cal/g? (1 Cal = 4.184 kJ) 3.33 Cal/g d. 13.9 Cal/g a. b. 105 Cal/g e. 1.60 Cal/g c. 25.0 Cal/g

A reaction is endothermic if it  A. absorbs heat  B. does work  C. has work done on it  D. releases heat

Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3 kilojoules of energy. How much energy does that represent in kilocalories?   Select one: a. 1.92 x 10-1 kcal b. 1.92 x 102 kcal c. 1.92 x 105 kcal d. 3.36 x 103 kcal e. 3.36 x 106 kcal

Нурothesis Theory Law Answer Bank Scientists, after many experiments, An untested explanation. An explanation that has been A doctor thinks, but has explain how the temperature of a gas tested and verified. not verified, why a patient depends on the energy of its molecules. has stomach pain. A description that predicts what happens, but does not explain how.

Convert the following numbers of calories or kilocalories into joules and kilojoules (Remember: kilo means 1000.) a. 75.2 kcal b. 75.2 cal c. 1.41 × 10³ cal d. 1.41 kcal

6. What does the temperature change as liquid water is warming up? a. What type of energy is changing during this process? How do you know? Is it increasing or decreasing? b. What type of energy is staying constant during this process?

The specific heat of aluminum is 0.214 cal/g.°C. Determine the energy, in calories, necessary to raise the temperature of a 55.5 g piece of aluminum from 23.0 to 48.6°C. A. 109 cal B. 273 cal C. 577 cal D. 347 cal E. 304 cal Energy is the ability to do work and can be: A. converted to one form to another B. can be created and destroyed C. used within a system without consequences D. none of the above

How many kilocalories are in a meal contains 20 grams of fat, 15 grams of protein, and 80 grams of carbohydrates? A. 500 B. 560 C. 595 D. 900

When a person eats to gain energy for activities, your body uses a Gravitational Potential Energy b. Elastic Potential Energy Chemical Potential Energy