How many moles of boron trifluoride are present in 2.40x10^22 molecules of this compound?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.