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Q.

A compound used in making nylon. Contains 43.8% oxygen. There are four oxygen atoms per molecule. What is the molecular mass of compound?

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a

36

b

146

c

292

d

116

answer is C.

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Detailed Solution

100 gm compound contain 43.8g oxygen 

 1g oxygen present with 10043.8g compound is 2.28 g

Four O atoms will be present in 2.29×16×4=146g

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