Introducing chemical reactions

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Question 12
Easy

Aluminium sulfate, Al2(SO4)3\text{Al}_2(\text{SO}_4)_3Al2​(SO4​)3​, is widely used in water purification to coagulate impurities.

What is the relative formula mass (MrM_{\text{r}}Mr​) of aluminium sulfate? (ArA_{\text{r}}Ar​: Al=27\text{Al} = 27Al=27, S=32\text{S} = 32S=32, O=16\text{O} = 16O=16)

150150150

214214214

262262262

342342342

Introducing chemical reactions Questions

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