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    Lattice Energy for CaH2

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    Calculate the lattice energy for CaH2 (in kilojoules per mole) using the following information:
    Eea for H = -72.8 kj / mol
    Ei1 for Ca = +589.8 kj / mol
    Ei2 for Ca = +1145 kj / mol
    Heat of sublimation for Ca = +178.2 kj / mol
    Bond dissociation energy for H2 = +435.9 kj / mol
    Net energy change for the formation of CaH2 from its elements = -186.2 kj / mol

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    Solution Summary

    This solution calculates the lattice energy for CaH2.