Question

Dimethyl sulfoxide [(ch3)2so], also called dmso, is an important solvent that penetrates the skin, enabling it to be used as a topical drug-delivery agent. calculate the number of c, s, h, and o atoms in 7.14 3 103 g of dimethyl sulfoxide.

Answer 1

The formula of DMASO is $[(CH_3)_2 (SO) ]$

$Mass = 7.14 * 10^3 g$

$Molar mass = 78 g$$78 g DMSO contains = 6.02 * 10^23 atoms$$7.14 * 10^3 g contains = (6.02 * 10^23 /78) * 7.14 * 10^3 atoms$

$= 0.55 * 10^26 atoms$

As, there are 2 carbon are present in DMSO along with 1 sulfur and oxygen and it also contains 6 hydrogen.

$Number of C present in DMSO = 0.55 * 10^26 * 2 = 1.102 * 10^26 carbons$

$Number of S present in DMSO = 0.55 * 10^26 * 1 = 0.55 * 10^26 sulfur$

$Number of H present in DMSO = 0.55 * 10^26 * 6 = 3.306 * 10^26 hydrogen$

$Number of O present in DMSO = 0.55 * 10^26 * 1 = 0.55 * 10^26 oxygen$