To get the gold out of the solution sodium dicyanoaurate is reacted with zinc. What mass of zinc is needed to extract all the gold. What mass of gold will be extracted?
2 Na(Au(CN),) + Zn → | Na,(Zn(CN),) + 2 Au

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

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.

Select the correct answer. wax is a nonpolar substance. in which type of substance is it the most soluble?