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5. 0 g of c8h18 are burned in a bomb calorimeter with 750 g water, and there is 10. 0∘c increase in temperature when 32. 0 kj of heat is released. What is the heat capacity of the calorimeter?.

Sagot :

bharathparasad577

The heat capacity of the calorimeter when 5.0 g of C₈H₁₈ is burned in a bomb calorimeter with 750 g water, and there is a 10.0°C increase in temperature when 32.0 kJ of heat is absorbed is 62 J/°C.

The mass of C8H18 is 5g and is burnt in 750g of water the temperature rise is 10°C and the heat absorbed is 32kJ. To find the heat gained by water the following formula is used,      

q = mCp∆T          

On substituting the values from the question we get,

q = 750x4.184x10

q= 31380J

The calorimeter will however absorb the remaining energy. This is given by,

Heat capacity of Calorimeter = 32000J - 31380J

Heat capacity of the Calorimeter = 62J/°C.

Therefore, the heat capacity of the Calorimeter is 62J/°C.

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