Q46 of 203 Page 129

Calculate the molecular mass of ethanoic acid, CH3 COOH.

(Atomic masses: C = 12 u; H = 1 u; O = 16 u)

Molecular mass of ethanoic acid (CH3COOH) = 1xC + 3xH + 1xC + 2xO + 1xH = 12+3+12+32+1 = 60u


More from this chapter

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44

Calculate the molecular masses of the following compounds:

(a) Methane, CH4


(b) Ethane, C2 H6


(c) Ethene, C2 H4


(d) Ethyne, C2 H2


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

 45

Calculate the molecular masses of the following compounds:

(a) Methanol, CH3 OH


(b) Ethanol, C2 H5 OH

 47

Calculate the molecular mass of nitric acid, HNO3. (Atomic masses: H = 1 u; N = 14 u; O = 16 u)

 48

Calculate the molecular mass of chloroform (CHCl3). (Atomic masses: C = 12 u; H = 1 u; Cl = 35.5 u)