Identify the given and convert it to moles. Identify the desired, and multiply the given number of moles by the mole ratio or equation factor, to produce moles of desired substance. Convert moles of desired substance to the units asked for in the question.
Explanation:
The mole method means that the stoichiometry configuration in a chemical equation is represented as number of moles of each substance.
The following steps are involved in the Mole method:
1) Write the balanced chemical equation.
2) Convert the units of given substance(X) into moles.
3) Using the mole ratio to calculate the moles of wanted substance(Y).
4) Convert moles of wanted substance to the desired units.
For example:
Calculate the mass of MgO?
Mass of MgO = Moles of MgO*molar mass of MgO.
Calculate the moles of Mg = Mass of Mg/Molar mass of Mg.
Moles of Mg = m/24.31.
