Answer to Question #61618 in General Chemistry for Katie Hamment

Question

Calculate the amount of heat energy absorbed when 1.6 grams of ammonium nitrate is dissolved

Answer 1

The amount of heat absorbed when 1 mol of ammonium nitrate is dissolved can be found in a number of handbooks (- 26.4 kJ/mol). 1.6 grams of ammonium nitrate is some 1.6 g/80 g/mol = 0.02 mol. Thus, the amount of heat absorbed is - 26.4 kJ/mol*0.02 mol = - 528 J.