It's about 77 cents per gram today. 4 or 5 of them bad boys and you'll be living the high life. Man that free latte is going to taste so good when you earned it.
in the Navy we used to use AgNO3 as a test for chlorides in fresh water. Neat fact is that it is a clear liquid, however when exposed to light it "develops" into a baleck indelible stain on skin. So if you write on someone with a soaked Q-tip, it will show up later .... just a thought
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