A trace element's concentration is less than a part per
A) thousand.
B) million.
C) billion.
D) trillion.
E) hundred.

Name: A trace element's concentration is less than a part per A) thousand. B) million. C) billion. D) trillion. E) hundred.
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Question

Quizplus · Accepted Answer

The concentration of a trace element is typically less than a part per million (ppm), meaning that for every million particles or units of material, there is only one unit of the trace element present.

A Trace Element's Concentration Is Less Than a Part Per