The Q value of a nuclear reaction `A + b rarr C + d` is defined by `Q = [ m_A + m_b -m_C- m_d]c^2`where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reaction and state whether the reaction is exothermic or endothermic. `"_1^1H`+`"_1^3H``rarr``"_1^2H`+`"_1^2H` Atomic masses are given to be m (`"_1^2H`) = 2.014102 u m (`"_1^3H `) = 3.016049 u