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# Concentration: Weight-over-Volume Percentage

CHEM-K4B4G1

Sodium chloride (90.00 grams) is added to a 1.00-L volumetric flask (Flask A) into which distilled water is added to dissolve the salt and eventually the volume of the solution is adjust, by adding more distilled water, to exactly 1.00 L.

10.00 mL solution taken from Flask A is added to an empty 100.00 mL volumetric flask (Flask B), before enough distilled water is added to bring the total volume to 100.00 mL.

What is the concentration of $NaCl$ (w/v) in Flask B?

A

0.900%

B

9.00 g/mL

C

0.00900%

D

0.900% g/L