Percent Yield 2H2+O2 → 2H20
33 grams of hydrogen gas reacts with
301 grams of oxygen gas. What is the
percent yield if the experiment produces
251 grams of water?

Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. one of these isomers has a heat of hydrogenation of 101 kj/mol (24.1 kcal/mol), and the heat of hydrogenation of the other is 113 kj/mol (27.1 kcal/mol). match the heat of hydrogenation with the appropriate dihydronaphthalene.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Displacement is the slope of a velocity vs. time graph a. true b. false