2Mg (s) +O 2(g) 2MgO (s) How many moles solid magnesium are required to form 10.00 moles of Magnsium oxide?

Question

2Mg (s) +O 2(g) 2MgO (s) How many moles solid magnesium are required to form 10.00 moles of Magnsium oxide?

Answer 1

Write a correctly balanced equation:

2Mg(s) + O2(g) ==> 2MgO(s) ... balanced equation

Use stoichiometry and dimensional analysis to solve the problem:

10.00 mols MgO x 2 mol Mg / 2 mol Mg = 10.00 mols Mg