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sherlyndaniel89
09.03.2020 •
Biology
How many grams of magnesium oxide can be produced if 2.490 Mg react with excess oxygen?
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Ответ:
2.49g of Mg will produce 4.13g of MgO
Explanation:
2Mg(s) + O2(g) → 2MgO(s) + energy
Molecular weight of Mg = 24.305 g/mol
Molecular mass of MgO = 40.3044 g/mol
According to the question,
2 X 24.305g of Mg will produce 2 X 40.3044 g of MgO
2.490 g of Mg will produce =
of MgO
= 4.13g of MgO
Therefore, 2.49g of Mg will produce 4.13g of MgO
Ответ:
answer:
b
explanation: