1 ppm = 1 part in 1,000,000 parts.
38 mg Pb = 0.038 g.
0.038g/300 g = ?? g Pb per 1 g water.
So ??g Pb per 1,000,000 g water?
A sample of 300.0g of drinking wtare is found to cntain 38 mg Pb. What is this concentration in parts per million?
5 answers
A 900.0 g sample of sea water is found to contain 6.7 x 10-3 g Zn. Express this concentration in parts per million?
Isn't this the same kind of problem?
yes can you just guide me through this one and it will be the last
Guide you through it? Do it the same way as the first one. Calculate g Zn/g water, then convert to a million grams water.
2 answers