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The maximum contaminant level (MCL) set by the EPA of cadmium in drinking water is 0.0050 mg/L . Convert the MCL of cadmium from milligrams per liter to parts per billion (ppb). converted MCL of cadmium: 5 ×10 6 ppb A farmer recently dug a new well for his property. He sends a 10.0 mL sample of the well water to the EPA to be tested for the presence of cadmium. What is the maximum amount of Cd (in μg ) that can be present in this 10.0 mL sample based on its MCL? maximum amount of Cd : μg Suppose the farmer rethinks his plan and digs a new well on the other side of his property. He sends in a new 10.0 mL sample. After testing, the EPA determines that the sample of water contains 0.00139 μg/mL Cd . Is the cadmium level of the new well water safe to consume? yes no not enough information

Respuesta :

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The maximum contaminant level of cadmium (Cd) in a 10 ml sample is 0.05 μg of Cd.

Yes, the water on the farmer property is safe to consume.

Explanation:

1) What is the maximum amount of Cd (in μg ) that can be present in this 10.0 mL sample based on its MCL?

The maximum contaminant level (MCL) in the drinking water set by the EPA is 0.0050 mg/L of cadmium. Now to transform mg in μg we multiply the value in mg by 1000.

0.0050 mg = 0.0050 × 1000 = 5 μg

So the MCL for cadmium in drinking water is 5 μg / L

Now we devise the following reasoning:

if we have        5 μg of cadmium in 1000 mL

then we have   X μg of cadmium in 10 mL

X = (5 × 10) / 1000 = 0.05 μg of Cd

2) Is the cadmium level of the new well water safe to consume?

The new water sample have a cadmium concentration of 0.00139 μg/mL.

Knowing that the MCL for cadmium in drinking water is 5 μg / L we devise the following reasoning:

if we have        5 μg of cadmium in 1000 mL

then we have   X μg of cadmium in 1 mL

X = (5 × 1) / 1000 = 0.005 μg of Cd

So the MCL for cadmium in drinking water 0.005 μg/mL which is higher than the concentration of 0.00139 μg/mL found in the water sample provided by the farmer. We can conclude that, yes the water is safe to consume.

Learn more:

about problems with concentrations

brainly.com/question/13252016

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