Lead is a toxic metal that affects the central nervous system. A
Pb-contaminated water sample contains 0.0013% Pb by mass.
How much of the water (in ml) contains 145 mg of Pb? (Assume a
density of 1.0 g/ml)
Pb-contaminated water sample contains 0.0013% Pb by mass.
How much of the water (in ml) contains 145 mg of Pb? (Assume a
density of 1.0 g/ml)
Answer
Let us try it.
0.0013% = 0.0013 g/100 ml water, or 1.3 mg/100 ml water
so for 145 mg, you need 145*100/1.3 = 11154 ml water or 11.154 L of
water
There you have it
0.0013% = 0.0013 g/100 ml water, or 1.3 mg/100 ml water
so for 145 mg, you need 145*100/1.3 = 11153 ml water or 11.153 L of
water
