A compound of molar mass 161 g/mol contains only carbon, hydrogen, bromine, and oxygen. Analysis reveals that the compound contains 12 times as much carbon as hydrogen by mass. Find the molecular formula. Express your answer as a chemical formula.

Explanation:

It is known that,

       Molar mass of Br = 80 g/mol

       Molar mass of O = 16 g/mol

       Molar mass of H = 1.09 g/mol

      Molar mass of C = 12 g/mol

Now, total mass of the compound is calculated as follows.

          = 161

             13x + 16 m + 80 = 161

We assume that m = 1. Hence, the value of x will be as follows.

            x =

               = 5

As per the formula 12x = 12y

or,        x = y = 5

Therefore, molecular formula of the given compound is .

the answer to your question is c.

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