Multiple Choice
Chromium is an ultratrace metal in the human body with a typical concentration of 5.0 mg in 75 kg of body mass. What is this concentration in units of parts per billion (ppb) ?
A) 6.7 107 ppb
B) 6.7 104 ppb
C) 67 ppb
D) 0.067 ppb
E) 0.67 ppb
Correct Answer:
Verified
Correct Answer:
Verified
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