🤓 Based on our data, we think this question is relevant for Professor Weiss' class at UCSC.
The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm means 1 part of solute for every 106 parts of solution. Mathematically, by mass:
ppm = μg solute / g solution = mg solute / kg solution
In the case of very dilute aqueous solutions, a concentration of 1.0 ppm is equal to 1.0 μg of solute per 1.0 mL, which equals 1.0 g solution. Parts per billion is defined in a similar fashion. Calculate the molarity of each of the following aqueous
c. 10.0 ppm As in H2O
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Our data indicates that this problem or a close variation was asked in Chemistry - Zumdahl 7th Edition. You can also practice Chemistry - Zumdahl 7th Edition practice problems.