Calculate the molecular masses of the following compounds:(a) Methane, CH₄(b) Ethane, C₂H₆(c) Ethene, C₂H₄(d) Ethyne, C₂H₂(Atomic masses = C= 12u , H= 1u)

Academic Chemistry NCERT Class 9

(a) Molecular mass of methane (CH₄) = 12 + 4 = 16 u

(b) Molecular mass of ethane (C₂H₆) = 2 x 12 + 6 x 1 = 30 u

(c) Molecular mass of ethene (C₂H₄) = 2 x 12 + 4 x 1 = 28 u

(d) Molecular mass of ethyne (C₂H₂) = 2 x 12 + 2 x 1 = 26 u

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Updated on: 10-Oct-2022

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