PROBLEM TWO $(2$ MARKS$)$:

a$)$ Heat in the amount of $31$ kJ is added to a closed system while its internal energy decreases by

$64$ kJ$.$ How much energy is transferred as work?

b$)$ For a process causing the same change of state but for which the work is zero, how much heat

is transferred?Remember to include all assumptions, block diagrams, full working, and units.