How many moles of KF are contained in 244 mL of 0.135 mol kg^-1 KF solution? The density of the solution is 1.22 g mL^-1. A) 4.31 × 10^-2 mol KF B) 4.02 × 10^-2 mol KF C) 3.29 × 10^-2 mol KF D) 2.32 × 10^-2 mol KF E) 1.67 × 10^-2 mol KF

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Quizplus · Accepted Answer

To find the moles of KF, first calculate the mass of the solution: 244 mL × 1.22 g/mL = 297.68 g. Convert this to kg: 297.68 g = 0.29768 kg. Then, use the molality to find moles: 0.135 mol/kg × 0.29768 kg = 0.0402 mol KF.

How Many Moles of KF Are Contained in 244 ML