What must products equal in a chemical reaction?

Atoms
Molecules
Reactants
Elements

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Calculate the number of molecules present in 0.750 mol of mgo.

Summarize possible ways in which phases of matter could combine to form a solution.