5. 48 dm3 of a gas has a mass of 262 grams. How many moles is this? What is the Mr? What must this element be?

If you reacted 88.9 g of ammonia with excess oxygen, what mass of nitric oxide would you expect to make? You will need to balance the equation first. NH3 (g) + O2 (g) - > NO (g) + H2O (g)

What is the molecularity of an elementary step, given its rate law is as follows: rate = k[a]2[b]?

Rank the acid-base definitions from most specific (exclusive) to most general (inclusive): Arrhenius, Brønsted-Lowry, Lewis Arrhenius, Lewis, Brønsted-Lowry Brønsted-Lowry, Lewis, Arrhenius Lewis, Arrhenius, Brønsted-Lowry

1. Bromine is a A. black solid B. red liquid C. colourless gas D. highly inflammable gas 2. The hardest substance available on earth is A. Gold B. Iron C. Diamond D. Platinum 3.

Name the only element that contains no neutrons and why is it likely to be unstable?

How many neutrons are in Cesium-130 (Cs) ? 55 75 130 185

An atom in a pure metal that's face-centered cubic has ___ neighbor atoms.

Rank the following bonds from strongest to weakest and provide the bond energy: the bond between hydrogen and oxygen in a water molecule; the bond between sodium and chloride in the NaCl molecule; the bond between atoms in a metal;

In an endothermic reaction do the reactants or the products have the lower potential energy

What kind of nuclear reaction would result in the release of a beta particle