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25-05-2021
Chemistry

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A student needs to dilute a 0.25 M Pb(NO3)2 solution to make 73.0 mL of 0.13 M Pb(NO3)2 . Set up the calculation by placing the values with the correct units into the equation. Then, calculate the volume, in milliliters, of the 0.25 M Pb(NO3)2 solution that is needed.

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keijosalonen keijosalonen

25-05-2021

Answer: Volume of 0.25 M solution is 38 ml

Explanation: Amount of substance n remains same.

n = c1V1 = c2V2 Solve V2 = V1c1 / c2 = 73,0 ml · 0.13 M / 0.25 M = 37.96 ml

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