Unit Conversions

1) For an aqueous solution of lead, Pb, convert 23 ppm to:

a) mg/L

b) mg/kg

c) mg/L

d) ppb

2) Convert 4.2 mg/l to ppb

3) Convert 71 mg/L to ppm

4) Convert 100 mg/kg to ppm and ppb

5) Convert 200 ppb to mg/L