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Alevel AQA Chemistry question

Could someone please explain how the mark scheme did steps 4 and 5?IMG_4444.jpegIMG_4443.jpeg
(edited 1 year ago)
M4: conc = mols/volume
M5: Youve worked out conc in the diluted solution which is 5% of initial. 5% of x = x/20. therefore times by 20 to get 100%
Reply 2
Original post by user8937264980
M4: conc = mols/volume
M5: Youve worked out conc in the diluted solution which is 5% of initial. 5% of x = x/20. therefore times by 20 to get 100%

Thank you!

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