Chemistry 4.10 Quiz: Heat During Changes of State Cheat Sheet
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Methanol (CH3OH) has a heat of fusion of 3.16 kJ/mol. Which of the following is the heat of solidification that occurs when 63 grams of liquid methanol freezes?
-6.32 kJ
If 34.1 kJ of heat is released when 5 moles of a gaseous substance condenses, what is the heat of condensation?
-6.82 kJ/mol
How many moles of liquid water must freeze to remove 100 kJ of heat? (Hf = -334 J/g)
16.6 moles
In the space station, liquid ammonia is used to transfer heat. If 100 g of liquid ammonia evaporates, then how much heat was removed? (Hv = 5.65 kJ/mol)
33.2 kJ
Consider the amount of heat energy delivered to an object by the same mass of liquid water at 100°C and steam at 100°C. Which of the following is true?
Steam delivers more energy because it condenses
