(a(i))[2]
Show that the air in the room has a mass of 79 kg.
(a(ii))[4]
Calculate the time needed for the temperature of the air in the room to rise from 16.0 $^{\circ}$C to 20.0 $^{\circ}$C.
(a(iii))[1]
Suggest one reason why the time found in a(ii) is the least time required to increase the temperature of the air in the room from 16.0 $^{\circ}$C to 20.0 $^{\circ}$C.
(b)[1]
State the main routes of thermal energy transfer from the room to the outside that are reduced by this type of window.