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Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged. When lit, the exploding gunpowder rapidly vaporizes the dry ice, building up an immense pressure. Assume that 500.0 of dry ice is placed in a cavity with a volume of 0.800 L and the ignited gunpowder heats the CO2 to 700K.

What is the final pressure inside the hole?

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