In a coffee-cup calorimeter, 0.00500 mol of mg is reacted with enough hno3 to produce 100.0 ml of solution. the reaction is shown below: mg (s) + 2 hno3 (aq) → mg(no3)2 (aq) + h2 (g) the temperature of the solution rose from 25.0°c to 30.5°c. find δhrxn for the reaction as written. assume that the density of the solution if 1.00 g/ml and specific heat is 4.18 j/g · °c.