A solution contain 20g of NaCl in 95cm3 solution . the density of solution is 1.25 gcm-3 what is mass % of NaCl?

1 Answer
anor277
Apr 29, 2018

#"Mass% NaCl"=16.8%"w/w"#

Explanation:

We want #"Mass of sodium chloride"/"Mass of salt PLUS mass of water"xx100%#

#=(20*g)/(95*cm^3xx1.25*g*cm^-3)xx100%=16.8%#...

...we used the given density and volume to calculate the mass of the solution....

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