What is the equation for the percentage mass of an element in a compound?

3 years ago

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Stacey Christiansen

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% mass = (mass of the desired element/ relative formula mass of the compound) x 100

Make sure you consider the subscript numbers in the chemical formula. Check out https://www.bbc.co.uk/bitesize/guides/zs3297h/revision/4 for worked examples.

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