calculate the weight of magnesium oxide formed by decomposition 2.1 g of magnesium carbonate.( Mg =24, C=12 , O= 16 )
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The empirical formula is the simplest whole-number ratio of atoms in a compound.
The ratio of atoms is the same as the ratio of moles. ...
Mass of Mg = 0.297 g.
Mass of magnesium oxide = mass of Mg + mass of O.
0.493 g = 0.297 g + mass of O.
Mass of O = (0.493 – 0.297) g = 0.196 g.
There is 1 mol of Mg for 1 mol of O .
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