calculating concentration0 please help!! Watch

chbutterfly
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#1
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hi

question is 25cm3 of sodium carbonate reacted with 20cm3 of 0.2m/dm3 of nitric acid

i need to calculate the no.moles of nitric acid in 20cm3 of the solution and the no. moles of nitric acid in the 20cm3 solution

can anyonepleeease help me!!

thanks
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- skyhigh -
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Concentration = number of moles divide by volume in dm^3.

Do you know how to turn cm^3 to dm^3?
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chbutterfly
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thanks- no dont think i do? xx
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- skyhigh -
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cm^3 divide by 1000 = dm^3

Can you solve it now?
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badeninc
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the formulas you should know: n (number of moles) = mass/Mr
n (number of moles = Molar Concentration X Volume (dm3)
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