Calculate heat change

Question

A calorimeter was used to measure the heat change when an ionic compound dissolves in water. The final mass of the contents of the calorimeter was 51.13 g and the change in temperature was 3.01 °C.

Calculate the heat change of the calorimeter contents, given that its specific heat is 4.11 J/(g⋅°C).

Answer 1

q = mC∆T

q = heat = ?

m = mass = 51.13 g

C = specific heat = 4.11 J/gº

∆T = change in temperature = 3.01º

q = (51.13 g)(4.11 J/gº)(3.01º)

q = 633 J (3 sig. figs.)