Three moles of an ideal gas with temperature independent cp=(7/2)r, cv=(5/2)r is contained in a horizontal piston/cylinder arrangement. If the piston has an area of 0.1 m2 as well as mass 500g. The initial pressure in the piston is 101 kpa. Find out the heat that must be extracted to cool the gas from 375C to 275C A) At constant pressure B) at constant volume