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November 08, 2025, 06:59:34 am

Author Topic: Chemistry - Nitric Acid Question  (Read 682 times)  Share 

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DoingItNow

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Chemistry - Nitric Acid Question
« on: August 25, 2013, 05:01:03 pm »
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Concentrated nitric acid has a concentration of approximately 15.8M and a purity of 70%. The molecular weight of HNO3 is 63.01g/mol
How much of HNO3 (in grams) would you expect in 10mL of pure HNO3?

lzxnl

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Re: Chemistry - Nitric Acid Question
« Reply #1 on: August 25, 2013, 05:40:45 pm »
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Concentrated nitric acid has a concentration of approximately 15.8M and a purity of 70%. The molecular weight of HNO3 is 63.01g/mol
How much of HNO3 (in grams) would you expect in 10mL of pure HNO3?

You're given the molar concentration, the purity and the molecular mass (not weight!)
Concentration * volume = number of moles
Number of moles * molecular mass = mass
Then multiply by 70% to get how much you actually get.
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DoingItNow

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Re: Chemistry - Nitric Acid Question
« Reply #2 on: August 25, 2013, 06:14:35 pm »
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Thanks. You confirmed what I thought.