physics, Work done during a gas expansion?

D

Derrick G

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If anyone knows how to get the answer to this please help

With the pressure held constant at 220 kPa, 45 moles of a monatomic ideal gas expands from an initial volume of 0.75 m^3 to a final volume of 2.0 m^3

How much work was done by the gas during the expansion? In Joules..

What were the initial temperature of the gas? In Kelvins..

What were the final temperature of the gas? In Kelvins...

What was the change in the internal energy of the gas? In Joules

How much heat was added to the gas? In Joules..
 
work done = P.dV = 220*1000*(2-0.75) = 275 kJ
initial temperature T = PV/nR = 220*1000*0.75/45*8.31 =441.472 Kelvin
final temperature T =final volume*initial temperature/initial volume
= 2*441.472/0.75 = 1177.2575 kelvin
 
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