Calculate the molecular masses of H2, O2, Cl2, CO2, CH4, C2H6, C2H4, NH3, CH3OH.

i) Molecular mass of H2= 2 x Atomic mass of H= 2 x 1
= 2 u
ii) Molecular mass of O2= 2 x Atomic mass of O
= 2 x 16
= 32 u
iii) Molecular mass of Cl2= 2 x Atomic mass of Cl
= 2 x 35.5
= 71 u
iv) Molecular mass of CO2= Atomic mass of C + 2 x Atomic mass of O
= 12 + 2 x 16
= 44 u

v) Molecular mass of CH4= Atomic mass of C + 4 x Atomic mass of H
= 12 + 4 x 1
= 16 u
vi) Molecular mass of C2H6= 2 x Atomic mass of C + 6 x Atomic mass of H
= 2 x 12 + 6 x 1
= 30 u

vii) Molecular mass of C2H4= 2 x Atomic mass of C + 4 x Atomic mass of H
= 2 x 12 + 4 x 1
= 28 u
viii) Molecular mass of NH3= Atomic mass of N + 3 x Atomic mass of H
= 14 + 3 x 1
= 17 u

ix) Molecular mass of CH3OH= Atomic mass of N + 3 x Atomic mass of H
= 12+ 4 x 1+16
= 32 u

5 Comments

  1. This app is very important in my life. I can’t solve my problems without this app.
    Very very very very NYC app💯

  2. It’s very useful .All the question I type , it comes the exact answer of the question .

    1. Yes it’s very helpful

  3. Very nice app
    I can understand everything vey properly
    I get answers of every question in just minutes

  4. ver nie app thnking about to join it pretty soon, also am able to understandd everything quitec easily,
    in just few mins

Leave a Comment

Your email address will not be published. Required fields are marked *

BOOK

Free Class