19. How much does the temperature increase when 3.00 kg of water is heated by a 900 W immersion heater for 9.00 min? Assume no energy loss to the surroundings. (cw = 4 186 J/kg⋅°C) a. 77.4°C b. 48.4°C c. 38.7°C d. 19.4°C 20. If an ideal gas does positive work on its surroundings, we may assume, regarding the gas: a. temperature increases. b. volume increases. c. pressure increases. d. internal energy decreases. 21. If a heat engine has an efficiency of 28.0% and its power output is 540 W, what is the rate of heat input from the combustion phase? a. 151 W b. 1 830 W c. 1 930 W d. 2 030 W

Q: Can you also solve for D and E?

A:

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Q: O stars

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Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.