An ideal gas system expands from $8\mathrm{.}40m^3$ to $29\mathrm{.}00m^3$ at constant pressure of $1\mathrm{.}45{10}^5$ Pa$.$ If the system absorbs $4\mathrm{.}85{10}^{4}J$ of heat in the process, what is the change in internal energy of the system?

J

A thermally isolated quantity of gas with an initial volume of $13\mathrm{.}5$ liters is compressed isobarically at a pressure of $280$ kPa $.$ If $920$ J of work is done on the system, what is the final volume of the gas?

liters