Question

calculate molecular mass of methanol and ethanol​

Answer 1

Ethanol formula is CH4O.

MC=12.01 g/mol

MH=1.01 g/mol

MO=16 g/mol

M_{C_H_4O}=M_C+4M_H+M_O

MC2H6O=12.01+4.04+16

MC2H6O=32.05 g/mol

Formula of ethanol is C2H5OH.

2(C) = 2(12) = 24

5(H) = 5(1) = 5

1(O) =1(16) = 16

1(H) =1(1)= 1

Add these , you will get 46g/mol ( ✓answer )

( NOTE : 12 - mass no of Carbon /

1 - mass no of Hydrogen /

16 - mass no of Oxygen )

Thanks for your question…

Answer 2

here is your answer....

molecular mass of Ethanol is

Mc=12.01g/mol

MH=1.01g/mol

Mo=16g/mol

Total= 32.041g/mol

molecular mass of Methanol is

=(1×C)+(4×H)+(1×O)

=(1×12.01)+(4×1.008)+(1×15.999)

32.041 amu