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Calculate the mass of ....

Calculate the mass of sodium carbonate that is needed to make 250.0 mL of 0.200 mol L(To the negative one) sodium carbonate solution.Answers?
Work out moles by doing c x v (convert the ml to dm3 first)
work out mass by doing moles times Mr

so 0.25 x 0.2 = 0.05
0.05 x 106 = 5.30 g
Original post by lollypenguin
Work out moles by doing c x v (convert the ml to dm3 first)
work out mass by doing moles times Mr

so 0.25 x 0.2 = 0.05
0.05 x 106 = 5.30 g


1ml = 1cm3 btw hence I got 0.25 by doing 250/1000 (as cm3 to dm3 is divide by 1000)
hope this has helped
(edited 5 years ago)

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