Question

Calculate molecular mass of C2H5OH (Atomic masses of H=1,S=32,N=14,O=16) is What?
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Answer 1

Answer:

c=12

12×2+1×5+16+1

46 g

Answer 2

Answer:

The molecular mass of $C_{2} H_{5} OH$ is 46 g.

Explanation:

$C_{2} H_{5} OH$ contains two atoms of carbon, six atoms of hydrogen, and one atom of oxygen.

The atomic mass of carbon = 12 g

The atomic mass of hydrogen = 1 g

The atomic mass of oxygen = 16 g

Therefore, the molecular mass of $C_{2} H_{5} OH$ = (2 × atomic mass of carbon)  +                   (6 × atomic mass of hydrogen)  +(1 × atomic mass of oxygen)

        = (2 × 12)+ (6 × 1) +(1× 16) = 46 g