When is the change in work or heat = to zero?

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Alexia Joseph 2B
Posts: 56
Joined: Thu Jul 27, 2017 3:01 am

When is the change in work or heat = to zero?

Postby Alexia Joseph 2B » Sat Jan 20, 2018 6:01 pm

How do you know that the work is equal to zero while using a bomb calorimeter? like in question 8.53

SitharaMenon2B
Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

Re: When is the change in work or heat = to zero?

Postby SitharaMenon2B » Sat Jan 20, 2018 7:12 pm

A bomb-calorimeter always has a constant volume, and any time volume is constant, then work = 0. This is because work is force x distance, and at a constant volume distance is 0.

Kevin Tabibian 1A
Posts: 42
Joined: Fri Sep 29, 2017 7:06 am

Re: When is the change in work or heat = to zero?

Postby Kevin Tabibian 1A » Sat Jan 20, 2018 9:21 pm

A Bomb Calorimeter is a isolated system, meaning that no heat or work will be exchanged with its surroundings, because q and w are a measure of energy transfer to surroundings it is safe to assume that the change in work and heat will be zero.


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