Ineed setting up the problem more than solving. : -)

Helium decays to form lithium. which equation correctly describes this decay?

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?

Match each term to its description. match term definition excess reactant a) reactant that can produce a lesser amount of the product limiting reactant b) amount of product predicted to be produced by the given reactants theoretical yield c) reactant that can produce more of the product