Reef Chemistry Question of the Day #85 Units of mixing

[Randy Holmes-Farley]

Reef Chemistry Question of the Day #85

In a chemical recipe mixing two ingredients, which of the following values for the smaller ingredient will not result in its same concentration in the solution as the others?


A. 0.02 w/w
B. 2 weight percent
C. 2 mg/g
D. 20 g/kg

Good luck!






















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[DFW]

C??

 

[Randy Holmes-Farley]

And the answer is...C. 2 mg/g Excellent, DFW. In fact, I was just in Dallas for the past 3 days on business. Stayed at the Gaylord Texan. Quite a place!

2 mg/g is about 0.2%.

All of the others are the same.

w/w means percent by weight (which is the same as weight percent).

Happy Reefing.