Calcium metal reacts with acid in solution according to the following reaction: Ca(s) + 2H†(aq) → Ca²+ (aq) + H2(g) When 0.1437 g of Ca(s) is combined with enough acid solution to make 150.0 g of solution in a coffee-cup calorimeter, all of the calcium reacts, raising the temperature from 21.80 °C to 24.90 °C. Assume that the solution is mostly water, so that the heat capacity is 4.184 J · g¬1.°C-1.

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