Jalen combines two substances in science class. Once combined, only one of the two substances is visible. When he placed this combination into a filter substance 1 stayed in the filter whilesubstance 2 went through it. Which of the following claims regarding Jalen's combination is the
most accurate?

a. This combination is not a mixture because he cannot see one of the substances

b. The combination is a mixture because the substances can be separated

c. The combination is not a mixture because the substances can be separated

d. The combination is a mixture only because he cannot see one of the substances

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.