Answered

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Question 7 (5 points)
(08.02 mc)
what is the mass of naci required to make 140 grams of a 12% solution of nach in water? (5 points)
12 grams

14 grams
oc
12 grams
od
18 grams

Sagot :

Medunno13

Answer: 18 g

Explanation:

[tex]0.12=\frac{\text{mass of NaCl}}{140}\\\text{mass of NaCl}=(0.12)(140)=16.8 \text{ g}[/tex]

The option closest to this is 18 g

View image Medunno13
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