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7 February, 20:00

What do the brackets in chemical equations mean? Im new to chemistry, what do brackets in chemical equations mean? Ca (OH) 2 What does the (OH) here symbolise? K2SO4. Al2 (SO4) 3. 24H2O What does (SO4) here symbolise?

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  1. 7 February, 23:11
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    That means that the 3 is applied to S and O

    hence in (SO4) 3 there are 3 S atoms and 12 O atoms
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