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