What is the concentration, in m/v%, of a solution prepared from 50. g NaCl and 2.5 L of water?



Answer:
concentration of NaCl = 50.0g/ 2.5L
= 20g/L
= 2 g in 100mL
= 2% (w/v)
50g/2.5L=20g/L
% m/V = g / mL x 100
% = 50 / 2500 mL x 100 = 2 %

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