Methane burns in the presence of oxygen to form carbon dioxide and water. 2nd attempt
A sealed chamber contains 7.50 g CH4 and 13.5g 02.
The mixture is ignited producing CO2 and H20. How many grams of CO2 are produced?

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.

How many atomic mass units are equal to 1.672×10−24 g of protons?

Why is it that 85.48 rounded to two significant figures is 85 and not 86?