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18-05-2023
Chemistry

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For a certain analysis a stock solution of 1000 mg/L iron is needed. The only iron salt that is present is iron(II) sulphate (FeSO4·7H2O). The mass percentage of iron in this salt is 20.1%. Calculate in mg how much iron(II) sulphate needs to be weighed out to make a 50.0 mL solution

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