(Answered) Consider the following thermochemical equationsreaction

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Consider the following thermochemical equations.

Reaction ΔrH° / kJ mol-1

HF(g) ? H(g) + F(g) 568

H2(g) ? 2 H(g) 436

HF(g) ? ½ H2(g) + ½ F2(g) 271

What is ΔrH° for the reaction below?

2 F(g) ? F2(g)

Give your answer in kJ mol-1, accurate to three significant figures. Do not include units in your answer.

ΔrH° = kJ mol-1

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