A limiting reactant is that reactant that is present in the lowest concentration.
Molar mass
The molar mass of a compound is the sum of the masses of all the atoms in the compound. The mole ratio is the ratio of the number of moles of A to the number of moles of B. The units of molar mass is gram per mole.
A limiting reactant is that reactant that is present in the lowest amount. An example of a limiting reaction is when there are more papers than crayons when a piece of drawing is required. The number of crayons becomes the "limiting factor" in the drawing process.
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