How many moles and how many grams of NaCl are present in 250 mL of a 0.5 M NaCl solution?

0.125 mol; 7.32 g

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7.32 mol; 0.125 g

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0.125 mol; 0.125 g

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7.32 mol; 7.32 g

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Solution

The correct option is A 0.125 mol; 7.32 g
Number of moles $= \frac{M V}{1000} = \frac{0.5 \times 250}{1000} = 0.125$

Mass of NaCl $= 58.5 \times 0.125 = 7.32 g$

Hence, te correct option is $A$

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