What particles make up an atom?

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

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