Question

Determine the number of moles of Sulfur in 3.73 x 1035 atoms of S?

Answer 1

The number of moles : 6.2 x 10¹¹

Further explanation

The mole is the number of particles contained in a substance

1 mole = 6.02.10²³  particles

$\tt N=n\times No$

N = number of particles

n = moles

No = Avagadro's number : 6.02.10²³

3.73 x 10³⁵ atoms of S

the number of moles :

$\tt \dfrac{N}{No}=\dfrac{3.73\times 10^{35}}{6.02\times 10^{23}}=6.2\times 10^{11}$