0.1375 g of magnesium is burned in a calorimeter with a heat capacity of 1769 J/°C. If the calorimeters temperature increases by 1.25°C, what is the experimental molar heat of combustion of magnesium in kJ/mol?

calculate q = Ccal X detla t = 1769 J/°C X 1.25°C
this is for 0.1375 g
convert it in moles and get the enegy of combustion for one mole