Question #97e4c

1 Answer
Alim K. ยท Stefan V.
Jan 26, 2018

"MgO"MgO is the empirical formula.

Explanation:

"mol of Mg" = "4.9 g" /"24 g/mol" = "0.2 mol"mol of Mg=4.9 g24 g/mol=0.2 mol

"mol of O" = "3.2 g"/"16 g/mol" = "0.2 mol"mol of O=3.2 g16 g/mol=0.2 mol

So the mole ratio is

0.2: 0.2 = 1:10.2:0.2=1:1

Therefore, "Mg"_1"O"_1 = "MgO"Mg1O1=MgO is the empirical formula.

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