A 50.00L sealed vessel is filled with a mixture of three gases at 25.0 degrees C. The mixture has a total mass of 137.860 g. and exerts a total pressure of 2.875 atm. if the mixture contains 4.00 moles of N2 and 1.00 mole of He, what is the identity of the third gas?

Steam reforming of methane ( ch4) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. an industrial chemist studying this reaction fills a 1.5 l flask with 3.5 atm of methane gas and 1.3 atm of water vapor at 43.0°c. he then raises the temperature, and when the mixture has come to equilibrium measures the partial pressure of carbon monoxide gas to be 1 .0 atm. calculate the pressure equilibrium constant for the steam reforming of methane at the final temperature of the mixture. round your answer to 2 significant digits.