Question
what is the theoretical yield in grams of MgO if 2.54g Mg metal reacts with excess O2
Answers
DrBob222
2Mg + O2 ==> 2MgO
mols Mg = grams/atomic mass = ?
Convert mols Mg to mols MgO. Use 1 mol Mg = 1 mol MgO.
Now convert mols MgO to grams MgO. grams = mols x molar mass
mols Mg = grams/atomic mass = ?
Convert mols Mg to mols MgO. Use 1 mol Mg = 1 mol MgO.
Now convert mols MgO to grams MgO. grams = mols x molar mass
Karen
82.9g