Stoichiometry - Mole to Mass (and vice versa)

Some questions in Stoichiometry will give you an amount of moles and will ask you to determine the mass. When converting moles to mass, 1 extra step is required, which is using the Molar Mass of that element. REMEMBER 2 RULES) 1. Balanced equation and 2. What you need over what you have.

Examples:

1. How many grams of Al2O3 are required to produce 3.5 mol of pure aluminum?
2. How many grams of water are produced if 0.84mol of Phosphoric Acid is neutralized by Barium Hydroxide?

* the numbers circled in red is the Molar Mass. signifying the extra step needed in order to complete the conversion