Some Basic Concepts Of Chemistry Question 201

Question: Which of the following has least mass [Pb. PET 1985]

Options:

A) 2 g atom of nitrogen

B) 3×1023 atoms of C

C) 1 mole of S

D) 7.0 g of Ag

Show Answer

Answer:

Correct Answer: B

Solution:

A. 2gm atom of nitrogen = 28gm B. 6×1023 atoms of C has mass =12gm

3×1023 atoms of C has mass =12×3×10236×1023=6gm

C. 1mole of S has mass = 32gm D. 7.0gm of Ag So, lowest mass = 6gm of C.



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