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# What is the molecular mass of Ethanoic acid?

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## Step1. Molecular MassMolecular mass is the sum of atomic mass, measured in amu.The mass of one carbon atom is equal to the atomic mass unit (formerly abbreviated as 'amu,' but now spelled as 'u' – unified mass) according to the latest IUPAC recommendation.Step2. The formula for molecular mass of Ethanoic acidThe formula for Ethanoic acid is ${\mathrm{CH}}_{3}\mathrm{COOH}$The molecular mass of ${\mathrm{CH}}_{3}\mathrm{COOH}$=$\left(\left(\text{2×TheatomicmassofC}\right)\text{+}\left(\text{4×}\mathrm{The}\mathrm{atomic}\mathrm{mass}\mathrm{of}\text{H}\right)\text{+}\left(\text{2×AtomicmassofO}\right)\right)$Step3. Calculation of molecular mass of Ethanoic acidThe molecular mass of Ethanoic acid= $\left(\text{2×12.01+4×1.0079+2×16}\right)\text{u}$ =$60.0516\text{u}$ $\simeq 60\text{u}$ Hence, the molecular mass of Ethanoic acid is $60\text{u}$.

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