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Topic: Quick random question, % of acids  (Read 1774 times)

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Offline asmcriminal

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Quick random question, % of acids
« on: December 02, 2014, 11:27:03 PM »
Hi, I am looking at 39% nitric acid. I also had the same question about sulfuric acid, and just acids in general. are they by volume/volume or mass/volume, mass/volume or what?
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Offline Hunter2

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Re: Quick random question, % of acids
« Reply #1 on: December 03, 2014, 01:17:05 AM »
Acids percentage is calculated by weight.  Nitric acid 39% w.w means in 1 kg acid is 390 g HNO3

Volume percentage is used for alcohol.  40% whiskey contain 400 ml Ethanol in 1 l.
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Offline asmcriminal

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Re: Quick random question, % of acids
« Reply #2 on: December 03, 2014, 02:56:31 AM »
okay thanks, i forgot what it was units where.
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