$ \text{100}\,\text{c}{{\text{m}}^{\text{3}}} $ of $ \text{0}\text{.1 M HCl} $ and $ \text{100}\,\text{c}{{\text{m}}^{\text{3}}} $ of 0.1 M $ \text{NaOH} $ solutions are mixed in a calorimeter. If the heat liberated is "Q" kcal, the heat of neutralisation $ \text{( }\!\!\Delta\!\!\text{ H)} $ (in kcal) of $ \text{HCl(aq)} $ and $ \text{NaOH(aq)} $ is