According to the EPA, the maximum contaminant level (MCL) of cadmium in drinking

Question

According to the EPA, the maximum contaminant level (MCL) of cadmium in drinking water is 0.0050 mg/L. Convert the MCL of cadmium from milligrams per liter to parts per billion (ppb). A farmer has recently dug a new well for his property. He sends a 16.0 mL sample of the well water to the EPA to be tested for the presence of cadmium. What is the maximum amount of C_d (in mug) that can be present in this 16.0 mL sample based on its MCL? Suppose the farmer has rethought his plan and dug a new well on the other side of his property. He sends a new 16.0 mL sample. After testing, the EPA determines that the sample of water contains 0.00150 mug/mL Cd. Is the well water safe to consume?

Explanation / Answer

1 mg/L = 1000 ppb

so , 0.005 mg/L =5 ppb

-----------------

1 L=1000 mL of water ------------------>0.005 mg

16 mL---------------->

cd concentration is 8*10^-5 mg

1 mg =1000 micro grams

0.008 micro grams present in 16 mL

----------------------------------------------------------------------------

yes the well water is safe

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.