Question

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

Answer 1

Answer: 18 g

Step-by-step explanation:

`0.12=\frac{\text{mass of NaCl}}{140}\\\text{mass of NaCl}=(0.12)(140)=16.8 \text{ g}`

The option closest to this is 18 g