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Molarity

What is the m...

Question

What is the molarity of a 10 mL solution in which 3.7 g KCl are dissolved?

0.05 M

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0.1 M

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1 M

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5 M

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10 M

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Solution

The correct option is E 5 M
molar mass of $K C l$ $=$ $74 g / m o l e$
Molarity $=$ $3.7 / (74 \times .01)$ $=$ $5 M$

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