A vessel with a movable piston contains $1\mathrm{.}90$ mol of an ideal gas with initial pressure

Pi $=2\mathrm{.}03105$ Pa$,$

initial volume

Vi $=1\mathrm{.}00102$ m$3,$

and initial temperature

Ti $=128$ K$.$

$($a$)$ What is the work done on the gas during a constant$-$pressure compression, after which the final volume of the gas is $3\mathrm{.}50$ L$?$

J

$($b$)$ What is the work done on the gas during an isothermal compression, after which the final pressure of the gas is $6\mathrm{.}00$ atm?

J

$($c$)$ What is the work done on the gas during a constant$-$volume process, after which the final pressure of the gas is $6\mathrm{.}00$ atm?

J