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The decomposition of \rm NI_3 to form \rm N_2 and \rm I_2 releases -290.0 \rm kJ of energy. The reaction can be represented as {\rm 2 NI_3 (s)\rightarrow N_2 (g) + 3 I_2 (g)},~{{\Delta H}}_{\rm rxn} = -290.0~{\rm kJ} Find the change in enthaply when 16.0g of \rm NI_3 decomposes.

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