Q$4($c$)[7$ Marks$]$

$14$ g of H$2$ gas $($molar mass of $2$ g$/$mol$)$ at temperature $30$ oC and $1\mathrm{.}6$ atm undergo an

isobaric compression until the volume is half the original value.

What is the temperature after the compression?

What is the new volume?

Q$4($d$)[3$ Marks$]$

The gas is now isothermally expanded until the volume is back to the original value.

What is the pressure now?

Q$4($e$)[3$ Marks$]$

Now, the gas pressure is isochorically increased until the original temperature is

reached. What is the final pressure?