Question

what volume of 12.0m HCI is needed to make 400.0mL of a 3.00M HCI solution

Answer 1

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The answer is

☆ The number of moles in solution befor dilution is equals the number of moles after so

☆ n befor = n after

☆ C×V = C×V

12 × ?? = 3 × 400

So,

☆ The volume u need is

☆ 400×3÷12= 100 ml

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