Question 3 of 12
4.0/ 4.0 Points
`In every 100 g of water, I can dissolve 36 g of NaCl. So, which of these solutions would be
unsaturated?
A.3.25 moles of NaCL dissolved in 500 ml of
water
B.5.8 moles of NaCl dissolved in 1 L of water
C.1.85 moles of NaCl dissolved in 300 ml of
water
D.none of the above
Answer Key: B

Feedback: Good. Solubility is discussed in
13.3
Question 4 of 12
4.0/ 4.0 Points
`Making solutions is an extremely important component to real-life chemistry. If you make a solution
using 100.0 g of H
2
O, 10.0 g of sodium chloride, and 15.0 g of methanol, what is the percent by weight
of methanol?

C.12.0%
D.10.0%
E.none of the
above
Answer Key: C
Feedback: Good. Mass percent is discussed in
13.5
Question 5 of 12
4.0/ 4.0 Points
'If you take sodium iodide (10.7 g) and dissolve it to 250 mL, what is the concentration?

Feedback: Good. Molarity is discussed in
13.6
Part 2 of 3 -
20.0/ 20.0 Points

Question 6 of 12
4.0/ 4.0 Points
`Suppose you have a 0.0170 L sample of H
2
SO
4
of unknown concentration. If this amount of H
2
SO
4
used to exactly titrate 0.0450 L of NaOH that has a concentration of 0.235 M, what is the molarity of the
H
2
SO
4
? HINT: H
2
SO
4
(aq) + 2NaOH (aq) → 2H
2
O (l) + Na
2
SO
4
(aq)
is

Feedback: Good. Titrations are discussed in
14.6