Expansion work


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Marsenne Cabral 1A
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

Expansion work

Postby Marsenne Cabral 1A » Sat Feb 09, 2019 2:41 pm

Can anyone help me with this question?

How much work does 100 g of water do when it freezes at ) degrees Celsius and pushes back the metal wall of a pipe that exerts an opposing pressure of 1070 atm? The densities of water and ice at 0 degrees Celsius are 1.00g/cm^3 and .92 g/cm^3 respectively.

Emily Huang 1E
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Re: Expansion work

Postby Emily Huang 1E » Sat Feb 09, 2019 2:55 pm

You would use the equation w=-PdeltaV. To get the final and intial volume you would multiply the grams of water by the density and convert cm3 to L. 1cm3 is 10^-3 L. Then you would use 1070 as the pressure value and plug in deltaV and convert L*atm to Joules to get the final work done.

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