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: C= 12u, H= 1u, O =16u, Cl = 35.5u, N = 14u)

Academic Chemistry NCERT Class 9

(a) Molecular mass of Hydrogen (H₂) = 2×H = 2×1u = 2u

(b) Molecular mass of Oxygen (O₂) = 2×O = 2×16u =32u

(c) Molecular mass of Chlorine (Cl₂) = 2×Cl = 2×35.5=71u

(d) Molecular mass of Ammonia (NH₃) = 1×N+3×H = 14+3=17u

(e) Molecular mass of Carbon dioxide (CO₂) = 1×C+2×O = 12+32 = 44u

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Updated on: 10-Oct-2022

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