Magnesium oxide (MgO) forms when the metal burns in the air. Then there will be 322.11 grams of Mg in 534 g of MgO.
Magnesium oxide is created during the burning of the magnesium metal when it combines with airborne oxygen. A compound is a substance made up of atoms from several elements that are chemically linked to one another. This molecule is created by the chemical interaction between oxygen and magnesium.
so, if 1.25 g of MgO contains .754 g of Mg
then, 534 g of MgO contains .754 x 534 / 1.25 g = 322.11 g
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