Question

Choose the correct answer.

The gram molecular mass of oxygen is_____________ .

• A. 16 g
• B. 32 g
• C. 64 g
• D. 48 g

Answer 1

The correct option is B

32 g

Molecular mass of an atom depends on the atomicity of an element.

• Atomic mass of oxygen = 16 amu
• Molecular mass of oxygen = 32 amu
• Gram molecular mass of oxygen = 32 g
• Hence 32 g of oxygen = 1 gram molecule of oxygen

Therefore option (b) 32 g is correct.