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Monday, 27 April 2026
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f 5.0 cm\(^-3\) of 0.200 mol dm(^-3\) Na\(_2\)CO\(_3\) was diluted to 250cm(^-3\) ...

f 5.0 cm\(^-3\) of 0.200 mol dm(^-3\) Na\(_2\)CO\(_3\) was diluted to 250cm(^-3\) solution, what would be the concentration of the resulting solution?
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  • A 0.004 mol dm(^-3\)
  • B 0.020 mol dm(^-3\)
  • C 0.200 mol dm(^-3\)
  • D 0.400 mol dm(^-3\)
Correct Answer: Option A
Explanation:
= initial molarity
= initial volume in liters
= final molarity
= final volume in liters




0.200 X 5.00 = M\(_2\) X 250
M\(_2\) = 1 / 250
M\(_2\) = 0.004 mol dm(^-3\)

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