Asked by Anonymous
A piece of magnesium ribbon weight 24g is burn in air an 40g magnesium oxide is formed. What mass of oxygen combined with the magnesium in this reaction
Answers
Answered by
Damon
24 g of Mg is how many mols of Mg ?
so How many mols of O ? (Hint: MgO has exactly as many mols of O as of Mg , note of O at 16 g/mol, not O2 at 32 g/mol)
so mass of O = mols of O * 16 g/mol
so How many mols of O ? (Hint: MgO has exactly as many mols of O as of Mg , note of O at 16 g/mol, not O2 at 32 g/mol)
so mass of O = mols of O * 16 g/mol
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