· A 0.100g sample of Mg when combined with O2 yields 0.166g of Mgo, a second Mg sample with a mass of 0.144g is also combined with O2. What
mass of MgO is produced from the second sample?

Explanation:

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In this case, the chemical reaction between magnesium and oxygen to yield magnesium oxide is:

In such a way, for 0.144 g of magnesium reacting with sufficient oxygen, the mass of magnesium oxide, whose molar mass is 40.3 g/mol (2:2 mole ratio) turns out:

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