simransufi12
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#1
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#1
a sample of 2.0 moldm^-3 acid has a volume of 100cm^3
what volume of water in cm3 should be added to this acid to dilute the sample to a concentration of 1.5 moldm^-3
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*****deadness
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#2
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Work out the moles in the original acid, then find the total volume for that many moles to be of a concentration of 1.5M
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*****deadness
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#3
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(Original post by Hena.mehay)
Wouldn’t it be 50cm3 of water to add?
Nop, that's not what I got
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BlinkistCoconut
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#4
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(Original post by *****deadness)
Nop, that's not what I got
Have you used m1v1 = m2v2? I didn’t use that but I just saw it online
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*****deadness
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(Original post by Hena.mehay)
Have you used m1v1 = m2v2? I didn’t use that but I just saw it online
I didn't do it that way but I using that equation just now I get the same answer as I did, and it's not 50cm3
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BlinkistCoconut
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#6
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(Original post by *****deadness)
Nop, that's not what I got
Did you get 133.333 —> 133.34 cm3 ?
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*****deadness
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#7
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(Original post by Hena.mehay)
Did you get 133.333 —> 133.34 cm3 ?
Yeah sounds about right
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