If 7500 J of energy are required to raise the
temperature of 47.5 g of a mystery material by 8.50 oC
then what is the specific heat of this material?
100 g of water at 2.0 oC is added to a cup of black coffee
at 95.0 oC. If the coffee/water mixture has a final
temperature of 70.0 oC then how much coffee was in the
cup originally? (Assume ccoffee = 4.18 J/goC)
How much heat is needed to change 250 g of snow at
-15.0 oC into hot water for tea at 95.0 oC?
1
If 7500 J of energy are required to raise the
temperature of 47.5 g of a mystery material by 8.50 oC
then what is the specific heat of this material?
2
100 g of water at 2.0 oC is added to a cup of black coffee
at 95.0 oC. If the coffee/water mixture has a final
temperature of 70.0 oC then how much coffee was in the
cup originally? (Assume ccoffee = 4.18 J/goC)
3
How much heat is needed to change 250 g of snow at
-15.0 oC into hot water for tea at 95.0 oC?
4
Suppose you need to steam an envelop open and you start with 375 g of tap water at 12.0 oC and change it into steam at 130 oC. How much heat do you need to do this?
How much heat must be removed from 500g of black coffee at 98.0 oC to turn it into coffee flavoured ice cubes at ­7.0 oC. Assume that the specific heat capacities for coffee are identical to those of ice.
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