# amount of substance

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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
0
1 month ago
#2
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
0
1 month ago
#3
(Original post by Hena.mehay)
Wouldn’t it be 50cm3 of water to add?
Nop, that's not what I got
0
1 month ago
#4
Nop, that's not what I got
Have you used m1v1 = m2v2? I didn’t use that but I just saw it online
0
1 month ago
#5
(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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1 month ago
#6
Nop, that's not what I got
Did you get 133.333 —> 133.34 cm3 ?
0
1 month ago
#7
(Original post by Hena.mehay)
Did you get 133.333 —> 133.34 cm3 ?
0
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