Chemistry Help? A saturated aqueous solution of sodium bromide (NaBr) at 20 oC contains 116 grams of NaBr per
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Chemistry Help? A saturated aqueous solution of sodium bromide (NaBr) at 20 oC contains 116 grams of NaBr per

[From: ] [author: ] [Date: 12-05-28] [Hit: ]
6 gb. 6.02 gc. 1.01 gd. 18.......
d. Compounds have constant composition, but solutions have variable composition.
e. The particles in both compounds and solutions are uniformly distributed.
A certain vinegar is 6.02% acetic acid (HC2H3O2), by mass. How many grams of acetic acid are contained in a 355 mL bottle of vinegar. Assume a density of 1.01 g/mL.
Answer
a. 21.6 g
b. 6.02 g
c. 1.01 g
d. 18.06 g
e. 38.5 g

How many grams of potassium nitrate are present in 5.0 x 102 mL of 0.080M KNO3?
Answer
a. 4.0 g
b. 6.8 g
c. 12 g
d. 2.1 g
e. 0.05 g
Which of the following statements is incorrect?
Answer
a. A solvent dissolves another substance.
b. A solution is a heterogeneous mixture.
c. A solution can contain more than one solute.
d. A solute is a substance that is dissolved in another substance.
e. Two immiscible liquids do not form a solution.
The solubility of NaCl in water at 30 oC is 37.0 g per 100 mL of water. When 12.0 g of NaCl is mixed with 40.0 mL of water, which of the following best describes the combination?
Answer
a. A saturated solution is formed.
b. A saturated solution is formed and solid remains.
c. A supersaturated solution is formed.
d. A heterogeneous mixture is formed.
e. An unsaturated solution is formed.

10 Points to whoever can help me!! Thank you!

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I'm not going to show detailed work for these; its to much to write out. I actually already did number 1 for you in another question.

1. B. (116g / 216g) *100 = 53.7%
2. C. Both CF4 and C2H6 are nonpolar.
3. D. (2000*1.08)/50 = 43.2
4. C. KBr is polar and CS2 is nonpolar. Therefore KBr is least likely to dissolve CS2
5. C. 9g/ 1000ml = 0.009 0.15/1 = .15M
6. B. 2/6.6 = 0.3M
7. D. (8.75 / 112) *100 = 7.81%
8. E. 1.5 * 1.33 = 2moles
9. A. I think
10. 21.6g ((355*1.01) / 100) * 6.02 = 21.6g
11. A. 0.4 * molar mass
12. B
13. B
12
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