In which of the following pairs of concentrations are the two concentrations equivalent to each other?
A) 7 ppm (v/v) and 7000 ppb (v/v)
B) 7 ppb (v/v) and 7000 ppm (v/v)
C) 7% (v/v) and 7000 ppm (v/v)
D) 7% (v/v) and 7000 ppb (v/v)
Correct Answer:
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