Answer
-4.11 kJ
Work Step by Step
According to the equation, the production of one mole of AgCl releases 65.5 kJ of Heat. To find how much is released by 9g, we must convert the 9g into moles. First we must find the molecular mass of AgCl. Ag has a mass of 107.8082 g/mol and Cl has a mass of 35.45 g/mol.
Therefore, AgCl has a mass of 143.2582 g/mol
Then to convert 9g to moles:
9g * ( 1mol/143.2582g) = 0.0628 mol, which would be 0.0628 * -65.5 kJ = -4.11 kJ
