The Concentration of Lead in a Water Sample Is Found

question 113

Multiple Choice

The concentration of lead in a water sample is found to be 3 ppb. To which of the following is this equivalent?

• A) 0.003 mg lead per 1 kg of water
• B) 0.03 mg lead per 1 kg of water
• C) 0.3 mg lead per 1 kg of water
• D) 3.0 mg lead per 1 kg of water

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Definitions:

Right Common Iliac Artery

A major blood vessel that bifurcates from the abdominal aorta, supplying blood to the right lower limb and pelvic organs.

Blood Clotting

A biological mechanism wherein blood cells and fibrin strands form a clot to stop bleeding and begin repair of the damaged vessel.

Cardiac Output

The volume of blood the heart pumps through the circulatory system in a minute.

Stroke Volume

The amount of blood ejected by the left ventricle of the heart in one contraction.