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Chapter 19: Q. 47 (page 545)
Your 300 mL cup of coffee is too hot to drink when served at 90掳C. What is the mass of an ice cube, taken from a -20掳C freezer, that will cool your coffee to a pleasant 60掳C?
The mass is 60.2g
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of a diatomic gas, with initial temperature , are compressed from to in a process in which constant. How much heat energy is added during this process?
of nitrogen gas follow the two processes shown in FIGURE P19.58. How much heat is required for each?
A cube on each side contains of helium at . of heat energy are transferred to this gas. What are (a) the final pressure if the process is at constant volume and (b) the final volume if the process is at constant pressure? (c) Show and label both processes on a single diagram.
A 50.0 g thermometer is used to measure the temperature of
200 mL of water. The specific heat of the thermometer, which
is mostly glass, is 750 J/kg K, and it reads 20.0 C while lying
on the table. After being completely immersed in the water, the
thermometer鈥檚 reading stabilizes at 71.2 C. What was the actual
water temperature before it was measured?
A container holds 1.0 g of argon at a pressure of 8.0 atm.
a. How much heat is required to increase the temperature by 100掳C at constant volume?
b. How much will the temperature increase if this amount of heat energy is transferred to the gas at constant pressure?
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