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CHM 1301 Quiz Unit 4

1. What would the expected temperature change be (in °C) if a 5 gram sample of water released 0.0501 kJ of heat energy? The specific heat of liquid water is 4.184 J/g-°C.
2. Which one of the following is an endothermic process?
3. A sample of aluminum absorbs 1 J of heat, upon which the temperature of the sample increases from 20.0°C to 35.5°C. If the specific heat of aluminum is 0.900 J/g- °C, what is the mass, in grams, of the sample?
4. The value of ΔE for a system that performs 190 kJ of work on its surroundings and gains 250 kJ of heat is __________ kJ.