When calibrating the coffee-cup calorimeter with two pieces of copper metal (Par
ID: 819914 • Letter: W
Question
When calibrating the coffee-cup calorimeter with two pieces of copper metal (Part A) which assumption is NOT reasonable?
Both pieces of metal have the same molar heat capacity.
If the copper pieces are in boiling water for several minutes, the temperature of the metal equals the temperature of the water.
The specific heat of copper does not change during the experiment.
The specific heat of water equals the specific heat of copper.
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Two solid objects, A and B, are both at room temperature and then placed in boiling water and allowed to come to temperature there. Each is then lifted out and placed in separate beakers containing 1000 g of water at 10.0 oC. Object A increases the water temperature by 7.20 oC; object B increases the water temperature by 1.50 oC. In neither case does a chemical reaction occur.
Which statement must be true?
The heat capacity of object A is greater than the heat capacity of B.
The heat capacity of objects A and B are equal.
The mass of objects A and B are equal.
The specific heat capacity of object A is less and than the specific heat capacity of object B.
Both pieces of metal have the same molar heat capacity.
If the copper pieces are in boiling water for several minutes, the temperature of the metal equals the temperature of the water.
The specific heat of copper does not change during the experiment.
The specific heat of water equals the specific heat of copper.
When calibrating the coffee-cup calorimeter with two pieces of copper metal (Part A) which assumption is NOT reasonable? Both pieces of metal have the same molar heat capacity. If the copper pieces are in boiling water for several minutes, the temperature of the metal equals the temperature of the water. The specific heat of copper does not change during the experiment. The specific heat of water equals the specific heat of copper.Explanation / Answer
5. D
6. A
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