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April 24, 2026, 09:00:54 am
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Author Topic: Concentration Question  (Read 833 times)  Share 

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methodsboy

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Concentration Question
« on: December 01, 2008, 06:16:31 pm »
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hi guys
I'm suck on this chem question and its really frustrating me

For a 0.20 M solution of potassium sulfate, K2SO4, calculate the number of moles of:
a   potassium ions, K+
b   sulfate ions, SO42–
c   oxygen atoms


the fully worked solution uses 0.250L as the volume but the question in the text doesn't state the volume.
If someone can explain how to attempt this question, it would be greatly appreciated.
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shinny

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Re: Concentration Question
« Reply #1 on: December 01, 2008, 07:23:24 pm »
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Is that question continued off another? Otherwise I think they just forgot to mention the volume.
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methodsboy

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Re: Concentration Question
« Reply #2 on: December 03, 2008, 05:43:35 pm »
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Quote from: shinjitsuzx on December 01, 2008, 07:23:24 pm
Is that question continued off another? Otherwise I think they just forgot to mention the volume.
no. its a completely new question.
i also think they forgot to state the mass or the volume.
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NE2000

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Re: Concentration Question
« Reply #3 on: December 04, 2008, 02:47:38 pm »
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lol then I would guess the volume was forgotten, unless there was some sort of volumetric flask involved in the question or anything.
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