So our first step is to see exactly what's going on within our coffee cup calorimeter. So we're basically mixing 1 mol of sodium hydroxide and 1 mol of hydrochloric acid. We get dissociated ions, 1 mol of each. And then these guys, we combine to form 1 mol of salt and 1 mol of water. So our second step and third step involves finding the total grams of our mixture. So you want to find the grams of sodium hydroxide and the grams of hydrochloric acid.