The maximum concentration set by the U S Environmental Protection Agency for lea

Question

The maximum concentration set by the U S Environmental Protection Agency for lead in drinking water is 15 ppb and for cadmium is 5 0 ppb How many liters of water contaminated at this maximum level must you drink to consume 2 9 fig of lead? Express your answer to two significant figures and include the appropriate units. How many liters of water contaminated at this maximum level must you drink to consume 2 9 fig of cadmium? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

D)

lead concentration = 15 ppb = 15 g/L

concentration = mass/volume

15 g/L = 2.9 g / volume

volume = 0.19 L

Answer: 0.19 L

E)

cadmium concentration = 5 ppb = 15 g/L

concentration = mass/volume

5 g/L = 2.9 g / volume

volume = 0.58 L

Answer: 0.58 L

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