Figure $1$ is a $\backslash ($ P V $\backslash )$ diagram of an isobaric process, illustrating how an amount of neon gas contracts inside a closed piston chamber.

Figure $\backslash (1$ P V $\backslash )$ diagram of a gas contracting in a closed piston chamber in an isobaric process

i$.$ Calculate the initial temperature, in degrees Celsius, inside the piston chamber. State your answer to $3$ significant figures.

ii$.$ Calculate how many moles of neon are in the piston chamber. Use $\backslash (\backslash$bar$\{$R$\}=8\mathrm{.}31\backslash$mathrm$\{$~J$\}\backslash$mathrm$\{$~K$\}^\{-1\}\backslash$mathrm$\{$~mol$\}^\{-1\}\backslash )$ and state your answer to $3$ significant figures.

iii. Calculate the change in internal energy in kilojoules, using values from Tables $2\mathrm{.}2$ and $3\mathrm{.}1$ in the Part $1$ book. State your answer to $3$ significant figures.