PLEASE HELP, I DON'T KNOW. WILL GIVE BRAINLIEST. HURRY PLZ a student calculates the density of an unknown metal sample to be 8.25 g/cm^3. Which set of data from the student's notebook correctly calculates for density

mass= 82.5. volume=11.0 cm^3
m=198.0 volume=24.0 cm^3
m= 165.2 volume=21.2 cm^3
m= 202.5 volume=25.0 cm^3

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.