Find the lattice energy of MgH2(s), show with a series of steps when the Enthalpies of

Question

formation for calcium hydride is given as; (ΔHf = −75.3 kJ/mol for MgH2)

Answer 1

Step 1: Calculate the lattice energy of MgH2(s) using the Enthalpy of formation.

Lattice energy = -75.3 kJ/mol

Step 2: Convert the lattice energy from kJ/mol to kJ/g.

Lattice energy = -75.3 kJ/g

Answer 2

Really?