Determine the percentage by mass of carbon

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Reference no: EM131347942

1. Determine the percentage by mass of carbon in C₈H₁₈:

2. Determine the percentage by mass of aluminum in Al₂O₃:

3. Determine the percentage by mass of oxygen atoms in a molecule of casein of milk, C₇₀₈H₁₁₃₀O₂₂₄N₁₈₀S₄P₄:

4. Determine the percentage by mass of carbon, hydrogen, and oxygen in methyl alcohol, CH₃(OH).

Reference no: EM131347942

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