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what is the concentration (molarity) of a solution where 149g of kcl is dissolved in enough water to get a total volume of the solution that is 500mls?
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what is the concentration (molarity) of a solution where 149g of kcl is dissolved in enough water to get a total volume of the solution that is 500mls?

User Pintu
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1 Answer

3 votes
Molar mass KCl = 74.55 g/mol

Number of moles:

mass KC / molar mass

149 / 74.55 => 1.998 moles

Volume in liters: 500 mL / 1000 => 0.5 L

Therefore:

M = moles / volume

M = 1.998 / 0.5

M = 3.996 mol/L⁻¹
User Lashaunda
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