Answer
0.762 M
Work Step by Step
Molarity=$ \frac{Number\,of\,moles\,of\,KCl}{Volume\, of\, solution\,in\,L}=\frac{\frac{Mass\,of\,KCl}{Molar\,mass}}{Volume\,of\, solution\,in\,L}$
$=\frac{\frac{14.2g}{74.55g/mol}}{0.250L}=0.762\,M$
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