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How much energy is required to decompose 765 g of PCl3, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and may be useful.

4 PCl3(g) â†’ P4(s) + 6 Cl2(g), Î”H°rxn = +1207 kJ

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1.68 × 10^3 kJ

trigonal bipyramidal

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