A closed vessel of fixed volume contains 22.9 g of CO₂(g) exerting a pressure of 1.50 atm. Some CH4(g) is introduced into the

Question

A closed vessel of fixed volume contains 22.9 g of CO₂(g) exerting a pressure of 1.50 atm. Some CH4(g) is introduced into the vessel, increasing the pressure to 3.25 atm. What mass of CH4(g) (in grams) was introduced in the vessel? Enter your answer in decimal notation, rounded to 3 significant figures.

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