Question

Theconcentration ofiron in a watersample is 500parts per million.Write thisconcentration asa fraction in yourjournal.

Answer 1

`500\text{ppm}*\frac{1percent}{10000\text{ppm}}=0.05`

500ppm = 0.05%

Now, express the percentage as a fraction:

0.05/100 = 1/2000

Therefore:

`500\text{ppm}=(1)/(2000)`