Question

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

• A. 36
• B. 116
• C. 292
• D. 146

Answer 1

The correct option is D 146

$100g$ compound contains $43.8$ oxygen;
$1g$ oxygen present with $\frac{100}{43.8}g$ adipic acid
$16\times 4g$ or $4$ mole oxygen present with $\frac{100}{43.8}\times 16\times \simeq 146g$ compound
$\therefore$ mol. wt. of adipic acid is $146$.