How many moles of CO2 are needed to fill an 70.0 L tank to a pressure of 150.0 atm at 300 K?

Answer 1

From ideal gas law, number of moles n = PV/RT = (150.0 atm)(70.0 L) / [(0.08206 L atm/mol K)(300K)] = 427 moles.

Answer 2

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https://youtu.be/2spz4y7iTBs