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Hydrogen gas, iodine vapor, hydrogen iodine are mixed in a flask and heated to 642°C. H2(g)...

Hydrogen gas, iodine vapor, hydrogen iodine are mixed in a flask and heated to 642°C.

H2(g) + I2(g) ⇋ 2 HI(g) Kc = 53 at 642°C

If the initial concentrations of hydrogen gas and iodine vapor are both 0.054 mol/L and the concentration of hydrogen iodine is 0.130 mol/L what is the equilibrium concentration of hydrogen gas? Enter a number to 4 decimal places.

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