Question $75$ A gas absorbs $0\mathrm{.}0J$ of heat and then performs $30\mathrm{.}8J$ of work. The change in internal energy of the gas is $-61\mathrm{.}6J61\mathrm{.}6J$ none of these are correct. $30\mathrm{.}8J-30\mathrm{.}8J.$