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WorksheetsSpecific heat and calorimetry quiz
Total questions: 14
Worksheet time: 17mins
A piece of copper alloy with a mass of 85.0 g if heated from 30.0°C to 45°C. In the process, it absorbs 523 J of energy as heat. What is the specific heat of the copper?
0.41 J/g°C
0.73 J/g°C
0.29 J/g°C
0.57 J/g°C
If an 85.0 g sample of copper with a specific heat of 0.41 J/g°C is cooled from 45°C to 25°C, how much energy will it lose?
-497 J
-846 J
-697 J
-346 J
What is meant by enthalpy change?
Change in light energy
Change in kinetic energy
Change in potential energy
Change in heat energy
How much energy would be absorbed as heat by 75 g of iron (specific heat 0.449 J/g·K) when heated from 295 K to 301 K?
202 J
157 J
285 J
379 J
Two metals of equal mass but different specific heats absorb the same amount of heat. Which metal undergoes the smaller change in temperature?
the metal with the higher specific heat
the metal with the lower specific heat
both undergo the same change in temperature
cannot determine from the information given
Increasing the temperature of a substance
increases its specific heat.
increases the potential energy.
increases the kinetic energy.
makes the molecules move more slowly.
You need 70.2 J to raise the temperature of an unknown mass of ammonia, NH3(g), from 23.0°C to 24.0°C. If the specific heat of ammonia is 2.09 J/g°C, calculate the unknown mass of ammonia.
147 g
6896 g
0.715 g
33.6 g
