Question

what is the molecular mass of ch3cooh and c2h5oh

Answer 1

ch3cooh(acetic acid)
60.05 g mol−1

c2h5oh(ethanol)
46.08 g/mol

Answer 2

Atomic mass of Carbon, C = 12 g
Atomic mass of Hydrogen, H = 1 g
Atomic mass of Oxygen, O = 16 g

Hence, 
The molecular mass of CH₃COOH 
= 12 + 3(1) + 12 + 16 + 16 + 1
= 60 g

 The molecular mass of C₂H₅OH
= 2(12) + 5(1) + 16 + 1
= 46 g