Ch.3 chem Q=mcT review worksheet

____J of heat is released by a 2.35g piece of copper whose temperature falls from 35.0C to -10.0C.

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What mass of gypsium can have its temperature raised 10.0C by 6 000.J?

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When a 1.35g sample of an unknown liquid cools by 10.0C, it releases 45J of energy. What is its specific heat capacity?

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A 2.5kg plank of wood is initially 22.2C and receives 9.69kJ of energy from a radiator. What will its final temperature be?

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What was the initial temperature of a 5.5g silver ring, if it changed to 45C when 50.0J of thermal energy was applied? The specific heat capacity of silver is 0.24 J/gC.

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The temperature of a 30.g stone rises from 25.C to 60.C when 2.6kJ of energy is applied. What is its specific heat capacity?

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What mass of mercury (Hg) should be used if its temperature is to be raised from 0.0C to 100.C with 0.02J of heat? The specific heat capacity of mercury is 0.1395 J/gC.

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Is it quicker to boil a potato or to deep fry it? Compare the energy required to boil 100.g of water and to boil 100.g of oil, both starting from an ambient temperature of 20.C. The boiling point of oil is 210C.

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There are 3 pies: a 1.25kg apple pie at 75C, a 1.06kg cheery pie at 75C, and a 1.25kg strawberry pie at 65C. Assuming the three pies have the same specific heat capacity, the pie that releases the least amount of heat will cool to an ambient temperature of 20C more rapidly than the others. Which on is it?

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In a fireplace, the bricks absorb heat and then release it over a long period of time after the fire is extinguished. A student performs an experiment to find the specific heat capacity of the brick. The results show that a 938g brick receives 16kJ of energy as its temperature rises from 19.5C to 35.0C. Calculate the specific heat capacity of the brick.

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