posted by Noah .
Calculate the number of mL of hydrogen gas at 27 degrees Celsius and 640 Torr produced by the reaction of 0.520 grams of magnesium with excess hydrochloric acid.
Here is a worked example of a stoichiometry problem. Find moles H2, then use PV = nRT to solve for volume in liters and convert to mL. http://www.jiskha.com/science/chemistry/stoichiometry.html
green liquid + blue lquid