# Question 3 of 12 40 40 points in every 100 g of water

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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