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Introduction to Hydrogen

Atomic mass o...

Question

Atomic mass of hydrogen ( $H$ ) is___u.

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Solution

Atomic mass = No. of protons + No. of neutrons

So, atomic mass of hydrogen (H) = 1 + 0 = 1 u

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Atomic mass of hydrogen (H) is ___u.

Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses: H = 1 u; Br = 80 u)

Q. Calculate the mass in grams of 0.17 mole of hydrogen sulphide, H₂S.
(Atomic masses : H = 1 u, S = 32 u)

Q. Calculate the molecular masses of the following compounds :
(a) Hydrogen sulphide, H₂S
(b) Carbon disulphide, CS₂

(Atomic masses : H = 1 u ; S = 32 u ; C = 12 u)

Q. Calculate the molecular masses of the following :
(a) Hydrogen, H₂
(b) Oxygen, O₂
(c) Chlorine, Cl₂
(d) Ammonia, NH₃
(e) Carbon dioxide, CO₂

(Atomic masses : H = 1 u ; O = 16 u ; Cl = 35.5 u ; N = 14 u ; C = 12 u)

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