Question

An ayurvedic drug, is found to contain 400 ppm of
colloidal gold. Mass % of gold (atomic mass of Au
= 197) will be

Answer 1

Answer:

Mass %age of Au = 400 / 10, 000 = 0.04 %

Explanation:

100% of mixture =  100, 000 ppm

1 % = 100, 000 / 100 = 10, 000 ppm

Example :

If we have 600 ppm of Barium, then

Mass percentage of Barium = 600 / 10, 000 = 0.06 %

Similarly, we can calculate mass percentage of gold.

             Mass percentage of Gold:

Mass %age of Au = 400 / 10, 000 = 0.04 %

So, the mass percentage of gold will be 0.04%.