Drinking Water from a Well Is Discovered to Have an Arsenic

question 70

Multiple Choice

Drinking water from a well is discovered to have an arsenic concentration of 3.4 × 10^-4 g of arsenic per liter.Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

• A) No, 3.4 × 10^-4 g is lower than the permissible value of 1.0 × 10^-5 g/L.
• B) Yes, 3.4 × 10^-4 g is higher than the permissible value of 1.0 × 10^-5 g/L.
• C) No, 3.4 × 10^-4 g is lower than the permissible value of 1.0 × 10^-3 g/L.
• D) Yes, 3.4 × 10^-4 g is higher than the permissible value of 1.0 × 10^-3 g/L.
• E) It is not possible to determine the answer from the information given.

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Definitions:

Nitrogenous Organic Compounds

Organic compounds that contain nitrogen as part of their molecular structure, including proteins, nucleic acids, and more.

Inorganic Nitrogen-containing Ions

Nitrate, nitrite, and ammonium ions that are crucial for plant nutrition but can cause environmental issues in excess.

Organic Molecules

Compounds primarily made of carbon atoms bonded with hydrogen, often containing oxygen and nitrogen, and forming the basis of all life forms.

Guano

Accumulated excrement of seabirds and bats, used as a fertilizer due to its high nitrogen, phosphate, and potassium content.