A student has a 10 cm$^3$ sample of 1.00 × 10$^{-2}$ mol dm$^{−3}$ methanoic acid solution.
The student is asked to dilute the methanoic acid solution to a concentration of 2.00 × 10$^{-4}$ mol dm$^{−3}$ by adding distilled water.
Which volume of water should be added?
1 )
200 cm$^3$
490 cm$^3$
3 )
500 cm$^3$
4 )
510 cm$^3$
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