A monatomic ideal gas is compressed from

$0\mathrm{.}245$ m$3$

to

$0\mathrm{.}150$ m$3$

at a constant temperature of

$280$ K$.$

The initial pressure is

$1\mathrm{.}30105$ Pa$.$

$($Include the sign of the value in your answers.$)$

$($a$)$

Determine the change in internal energy

$$U$.$

J

$($b$)$

Determine the thermal energy

Q

transferred to the gas.