The molecular mass of the compound, Cl₂CO is 99 g/mol
Molecular mass of a compound can simply be obtained by adding the molar masses of the different elements present in the compound.
With the above information in mind, we can obtain the molecular mass of the compound as follow:
Molar mass of Cl = 35.5 g/mol
Molar mass of C = 12 g/mol
Molar mass of O = 16 g/mol
Molar mass of Cl₂CO = (35.5×2) + 12 + 16
= 71 + 12 + 16
Therefore the molecular mass of Cl₂CO is 99 g/mol
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