Question #5ca1d

1 Answer
Gaya3
Sep 28, 2017

#140 g#

Explanation:

Concentration# = (mass) / (volume)*100#

Concentration #=7%#
[Assuming you have the concentration in #%g/(mL)#]

Volume of Solution #= 2L = 2000mL#
Mass of #NaCl = ?#

#=>7%g/(mL) = m/(2000mL) *100#

#=>m = (7*2000)/100 = 140g#

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