The formula of ethanol is C2H5 – OH. What will be its molecular mass?         I.  46 u        II.  34 u       III.  34 g       IV.  46 g

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Muskan Anand

2 years ago

Option D. Molar mass of ethanol (C2​H5​OH) =(2×atomic mass of carbon)+(6×atomic mass of hydrogen)+(1×atomic mass oxygen) =2(12)+6(1)+1(16)=46 g/mol

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