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Topic: percentage concentration  (Read 3393 times)

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Offline xxdeathxnotexx

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percentage concentration
« on: May 18, 2009, 06:20:32 AM »
Hi, can anyone please help me with this? ???

How many mole of H2SO4 is present in 3.20 L of a 35.7% w/w sulfuric acid, H2SO4, solution in a
car battery? Assume the density of the 35.7% w/w sulfuric acid is 1.28 g mL21. ???

I have no idea on what to do... ???

thankyou =]
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Offline sjb

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Re: percentage concentration
« Reply #1 on: May 18, 2009, 01:10:27 PM »
Quote from: xxdeathxnotexx on May 18, 2009, 06:20:32 AM
Hi, can anyone please help me with this? ???

How many mole of H2SO4 is present in 3.20 L of a 35.7% w/w sulfuric acid, H2SO4, solution in a
car battery? Assume the density of the 35.7% w/w sulfuric acid is 1.28 g mL21. ???

I have no idea on what to do... ???

thankyou =]

What kind of a measurement is g mL21? Assuming you mean g / ml, then what is the mass of 3.20L of that solution? Given that 35.7 % w/w of that is sulfuric acid, how much acid do you have? What's the formula of sulfuric acid, and so what's the molecular weight of it?
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Offline kassem23

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Re: percentage concentration
« Reply #2 on: May 18, 2009, 02:38:13 PM »
Use WolframAlpha.com now :)
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Offline Borek

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Re: percentage concentration
« Reply #3 on: May 18, 2009, 03:30:55 PM »
Quote from: kassem23 on May 18, 2009, 02:38:13 PM
Use WolframAlpha.com now :)

You will know the answer, but you won't be any wiser.
« Last Edit: May 19, 2009, 03:12:37 AM by Borek »
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