Question

A cylinder contains 1.5 moles of ideal gas, initially at a
temperature of 113 ∘C. The cylinder is provided with a frictionless
piston, which maintains a constant pressure of 6.4×105Pa on the
gas. The gas is cooled until its temperature has decreased to 27∘C.
For the gas *C**V* = 11.65 J/mol⋅K, and the ideal gas
constant *R* = 8.314 J/mol⋅K.

1.Find the work done by the gas during this process.

2.What is the change in the internal (thermal) energy of the gas during this process?

3.How much heat is transferred to the gas during this process?

Answer #1

Note : don't forget to put negative sign with answers of 1 , 2 and 3... I have given the answers in three significant figures ..

Also in two significant figures answers are 1) -1100 J

2) -1500 J

3) -2600 J

All are negative..

Hope this helps...

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