What mass of MgO would be produced by heating a 300.-kg sample that is 59.0% Mg(OH)₂? Assume complete reaction and no other source of magnesium.

Question

Quizplus · Accepted Answer

The correct answer is A because:The molar mass of Mg(OH)2 is 58.32 g/mol, and the molar mass of MgO is 40.30 g/mol. So, 1 mole of Mg(OH)2 produces 1 mole of MgO, and the mass of MgO produced is 40.30 g/mol / 58.32 g/mol * 300 kg * 0.59 = 122 kg.

What Mass of MgO Would Be Produced by Heating a 300.-Kg