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Suppose you initiate an equilibrium by placing gaseous phosgene molecules in a sealed constant volume 200.00...

Suppose you initiate an equilibrium by placing gaseous phosgene molecules in a sealed constant volume 200.00 Cm^3 box at 665K. How many phosgene molecules do you need to place in the box initially if you want the pressure inside the box at equilibrium to be at 2.00 atm? Phosgene is formed from CO and Cl2 and the equilibrium constant for the formation is 1.2x10^3 at 665 K.

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