Which reaction is endothermic? 2brcl mc019-1.jpg br2 + cl2 + 29.3 kj 2h2 + o2 mc019-2.jpg 2h2o + 572 kj c + o2 mc019-3.jpg co2 + 394 kj n2o4 + 59 kj mc019-4.jpg 2no2

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.