Alevel AQA Chemistry question

Could someone please explain how the mark scheme did steps 4 and 5?

(edited 2 years ago)

Reply 1

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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