(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the required mass of Al_{2}(SO_{4})_{3}.18H_{2}O (molar mass = 666 g/mol) to prepare 50 mL of an aqueous solution, concentration = 40 mg of Al^{3+}per mL

3. The attempt at a solution

0.04 grams of Al^{3+}/1mL = x g / 50 mL

x = 2g

I think this is the required mass of Al^{3+}, now I don't know how to find how much Al_{2}(SO_{4})_{3}.18H_{2}O do I need to get 2 g of Al^{3+}

The answer is 24.7g

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# Concentration problem

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