What is the pressure in atmospheres of 201 grams of O2 gas in a 12.0 liter vessel at 25.0OC?

Question

What is the pressure in atmospheres of 201 grams of O2 gas in a 12.0 liter vessel at 25.0OC?

Answer 1

Use the ideal gas law:

PV = nRT

P = nRT/V

P is pressure, n is number of moles, R is the universal gas law constant, .082, T is temperature in Kelvin.

Convert 201 g of O2 into moles by dividing by the molar mass. Also convert 25 degrees Celsius into Kelvin by adding 273.

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