How many moles of H₂(g) will this reaction produce if the %yield is 100%? What is the pressure (in atm) of the produced hydrogen gas in the 20.0 L cylinder at 50.0 °C? In this reaction: Mg (s) + I₂ (s) → MgI₂ (s), if 2.34 moles of Mg react with 3.56 moles of I₂, and 1.76 moles of MgI₂ form, what is the percent yield? What is the identity of a 100.0 g sample of metal that, upon absorbing 4680 J of heat, increases in temperature by 52.0 °C? Starting with the following equation, BaCl₂(aq) + Na₃PO₄(aq) → Ba₃(PO₄)₂(s) + NaCl(aq), calculate the mass in grams of BaCl₂ (208.2 g/mol) that will be required to produce 41.5 grams of Ba₃(PO₄)₂ (609.1 g/mol).