Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2mg (s) + o2 (g) ? 2mgo (s) when 4.00 g of magnesium burns, the theoretical yield of magnesium oxide is

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Chemistry

Kemp

31 March, 01:13

Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2mg (s) + o2 (g) ? 2mgo (s) when 4.00 g of magnesium burns, the theoretical yield of magnesium oxide is

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Dallas · Answer 1

Mole = Mass/Molar Mass

The number of moles of Mg is 4/24 which is 0.16667 mol.

So theoretically, 0.33334 mol of MgO should be produced.

Therefore, 0.33334 x (24+16) = 13.3g (3 sig. fig.)