a cylinder with a moving piston expands from an initial volume of 0.350 L agains

Question

a cylinder with a moving piston expands from an initial volume of 0.350 L against an external pressure of 2.70 atm. The expansion does 347 J of work on the surroundings. What is the final volume of the cylinder? V=? a cylinder with a moving piston expands from an initial volume of 0.350 L against an external pressure of 2.70 atm. The expansion does 347 J of work on the surroundings. What is the final volume of the cylinder? V=? a cylinder with a moving piston expands from an initial volume of 0.350 L against an external pressure of 2.70 atm. The expansion does 347 J of work on the surroundings. What is the final volume of the cylinder? V=?

Explanation / Answer

Solution :-

formual to calculate the work is

W= -P*Delta V

lets convert the work from 347 J to l atm

-347 J * 1 L atm / 101.3 J = -3.425 L atm

So now lets put the value of the work in the formula and calculate the final volume

-3.425 Latm = - 2.70 atm * ( V2-V1)

3.425 Latm = 2.70 atm * Delta V

3.425 L atm / 2.70 atm = 1.268 L

so the delta V = 1.268 L

So the final volume = 0.350 L + 1.268 L =1.62 L

So the final volume of the cylinder was 1.62 L

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