The relative atomic mass of hydrogen is 1 and of carbon is 12. 12g of an unknown hydrocarbon (containing hydrogen and carbon only) was found to contain 9g of carbon. This is shown below. What is the value of x?

Modern weaponry has increased the number of deaths in wars and violent conflicts.

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.

In two or more complete sentences describe all of the van der waals forces that exist between molecules of sulfur dioxide, so2.