A solution of rubbing alcohol that is used as a first aid antiseptic is 65 % isopropyl alcohol and 35% water by mass. The formula of isopropyl alcohol is (CH3)2CHOH. The density of rubbing alcohol is 0.84 g/ mL. Calculate the number of carbon atoms present in 2.50 L of rubbing alcohol.

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.