Le Cha telier's Principle For the equilibrium system: 2HBr(g) ⇌ Br2(g) + H2(g), find the value of Q given the following concentrations:
[HBr] = 1.37M
[Br2] = 0.057M
[H2] = 0.314M
Show work and correct significant figures.

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Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: