A sample of `2 kg` of monoatomic helium (assumed ideal) is taken through the process ABC and another sample of `2 kg` of the same gas is taken through the process ACD as shown in (figure). Given molecular mass of He `= 4 and R = 8.3J mol e^(-1)K^(-1)`
(i) What is the temperature of `He` in each of the states A, B, C and D?
(ii) How much is the heat involves in process , ABC and ADC?