Question

11 g of gold costs Rs. 5,000/-. What is the cost of 1 atom of gold?​

Answer 1

Answer:

One atom of gold is worth $0.000 000 000 000 000 000 025

Answer 2

Answer:

3.05×10²¹

Explanation:

atomic weight of the gold (Au) = 196.97 ( 197g apprx)

the avogadro's number in 1 mole are = 6.022×10²³

that means 6.022×10²³ atoms weight 196.97g

now,

1.0g÷ 196.97g = 0.0052 mole

so the number of atoms in 1 gram of gold are:

0.0052×6.022×10²³ = 3.057318373×10²¹