#### The Q value of a nuclear reaction A + b \rightarrow C + d is defined by [math] Q = [m_A + m_b - m_C - m_d] c^2 [/math] where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reactions and state whether the reactions are exothermic or endothermic. (i) ^{1}_{1} H + ^{3}_{1} H \rightarrow ^{2}_{1} H + ^{2}_{1} H , (ii) ^{12}_{6} C + ^{12}_{6} C \rightarrow ^{20}_{10}Ne + ^{4}_{2} He

Atomic masses are given to be

m(_1^2H) = 2.014102 u

m (^{3}_{1}H) = 3.016049 u

m (^{12}_{6} C) = 12.000000 u

m (^{20}_{10} Ne) = 19.992439 u