AQA A-level Chemistry Paper 2 2021 (first half) walkthrough

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AQA A-level Chemistry Paper 2 2021 (first half) walkthrough
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hi there you put 1.45/56.1 when i think its meant to be 0.421/56.1 am i wrong?

kezlartey
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Please explain 2.5 I don’t understand why it has 3 hydrogen and 4 when it’s NH2?

buibyco