Answers26-27 CFISD TX-Chemistry A CRLab: Solubility

Lab: Solubility Answers

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1
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Every morning, Sarah prepares the same amount of coffee at the same temperature. Identify the coffee solution with the highest concentration.

A
On Wednesday, Sarah poured sugar into her coffee until the sugar molecules were spread evenly throughout the entire cup of coffee.
B
On Thursday, Sarah poured sugar into her coffee until undissolved sugar remained at the bottom of her coffee cup.
2
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Every Sunday, Sarah prepares blue fruit punch to have with dinner. Identify the fruit punch solution with the higher concentration.

A
fruit punch with a very dark blue color
B
fruit punch with a light blue color
3

A science teacher adds water to a strong acid for use in the lab with students. This makes the concentration , because the amount

A
weaker
B
stronger
C
the same
4

of solute per volume of solvent

A
increases.
B
decreases.
C
remains the same.
5

E

Answer:

D

6

F

Answer:

C

7

2. Move the shaker continuously to add cobalt (II) chloride until the concentration is 4.330 mol/L. How would you classify this solution?

A
saturated
B
supersaturated
C
unsaturated
8

4. Tap the faucet to add another 0.5 L of water, bringing the total volume of the solution. When you doubled the water volume, what happened to the concentration? How would you now classify this solution?

A
saturated
B
supersaturated
C
unsaturated
9

What is the molarity of a solution that contains 25 g of HCl in 150 mL of solution? (The molar mass of HCl is 36.46 g/mol.)What should you find first?

A
moles
B
grams of solvent
C
liters of solute
10

How many moles of AgNO3 are present in 1.50 L of a 0.050 M solution?

A
1.50 mol
B
0.050 mol
C
0.075 mol
11

Which equation shows the proper setup to find the volume of a 0.250 M CaCl2 solution that contains 39.5 g of CaCl2?

A
Option
Option A
B
Option
Option B
C
Option
Option C
12

What volume of a 0.100 M AgNO3 solution is required to completely react with the CaCl2 in 3.00 L of a 0.100 M CaCl2 solution? The balanced chemical equation is: L AgNO3

Question illustration
Answer:

6.00

13

The correct dimensional analysis equation is shown here:Did you perform the calculation correctly?

Question illustration
A
Yes, I got the correct answer.
B
Yes, but I got the wrong answer because of a math error.
C
No, I did not set up the calculation correctly.
14

Which methods could be used to dilute a solution of sodium chloride (NaCl)? Select all that apply.

A
Add more NaCl to the solution.
B
Add more water to the solution.
C
Remove a small amount of the solution and mix it with water.
D
Heat the solution to evaporate some of the water.
15

A

Answer:

C

16

Find the new concentration of a solution if 25.0 mL of water is added to 125.0 mL of 0.150 M NaCl solution.What is the final volume? mL

Answer:

150.0

17

A chemical supply company sells sulfuric acid (H2SO4) in a concentration of 4.00 M. What volume of this solution would you need to make 12.0 mL of a 0.50 M H2SO4 solution?Which equation should you use?

A
Option
Option A
B
Option
Option B
C
Option
Option C
18

3. What happened to the color of the solution as you added more of the ionic compound?

A
It got darker.
B
It got lighter.
C
It stayed the same.
19

Which setup is correct for finding moles?

A
Option
Option A
B
Option
Option B
20

Calculate the mass of ammonium sulfide (NH4)2S in 3.00 L of a 0.0200 M solution. g (NH4)2S

Answer:

4.09

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