Bomb calorimeter

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vicenteruelos3
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Bomb calorimeter

Postby vicenteruelos3 » Sun Jan 21, 2018 9:47 pm

Why is a bomb calorimeter an isolated system?

sahajgill
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Re: Bomb calorimeter

Postby sahajgill » Sun Jan 21, 2018 9:48 pm

It's an isolated system because no energy or matter is exchanged between the calorimeter and the surroundings.

CameronJohari1J
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Re: Bomb calorimeter

Postby CameronJohari1J » Sun Jan 21, 2018 9:48 pm

Because no heat or matter is allowed to go between the system and surrounding for an isolated system and such occurs in a calorimeter and its surroundings.

Amelia Georgius 1K
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Re: Bomb calorimeter

Postby Amelia Georgius 1K » Mon Jan 22, 2018 8:57 pm

A bomb calorimeter completely closes off its contents from the surroundings so that neither energy nor matter can be exchanged between the system and its surroundings, making it an isolated system.

MSkye Goldwater 2K
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Re: Bomb calorimeter

Postby MSkye Goldwater 2K » Fri Jan 26, 2018 12:05 am

All the above is correct. It being an isolated system is extremely important and is why bomb calorimeters are extremely useful. This allows for the very accurate calculation of the energy released when a substance has been combusted.

Karen Ung 2H
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Re: Bomb calorimeter

Postby Karen Ung 2H » Fri Jan 26, 2018 12:35 am

In addition to the above responses, it is important to note that a bomb calorimeter is at constant volume, which means work = 0.

Hellen Truong 2J
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Re: Bomb calorimeter

Postby Hellen Truong 2J » Fri Jan 26, 2018 1:14 am

Also, the purpose of a bomb calorimeter being an isolated system is so that heat is not lost to the environment and q rxn can be calculated as negative q calorimeter!

Magdalena Palavecino 1A
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Re: Bomb calorimeter

Postby Magdalena Palavecino 1A » Thu Feb 01, 2018 4:43 pm

Also, an easy way to remember that it is bomb calorimeter is that since the volume does not change, pressure builds up inside against the constant volume!


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