The maximum contaminant level of copper (cu) in drinking water as set by the the environmental protection agency (epa) is 0.0013 g⋅l−1 . express this concentration in parts per million (ppm). assume the density of water is 1.00 g/ml .

Given that the maximum contaminant level of copper in potable water according to the Environmental Protection Agency (EPA) is 0.0013g/L

That means 0.0013 g of Copper can be present in 1 L water.

ppm(parts per million) is equivalent to the concentration of mg/L

1 ppm = 1 mg/L

We can convert 0.0013 g/L to mg/L in order to get the concentration in ppm.

Converting 0.0013 g/L to mg/L:

1.3 mg/L = 1.3 ppm

Therefore, 0.0013g/L can be expressed as 1.3 ppm

thats how its supposed to be

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