Test

Question 1

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

Revolt · Accepted Answer

B: On Thursday, Sarah poured sugar into her coffee until undissolved sugar remained at the bottom of her coffee cup.

Question 2

Every Sunday, Sarah prepares blue fruit punch to have with dinner. Identify the fruit punch solution with the higher concentration.

Revolt · Accepted Answer

A: fruit punch with a very dark blue color

Question 3

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

Revolt · Accepted Answer

A: weaker

Question 4

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

Revolt · Accepted Answer

A: saturated

Question 5

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?

Revolt · Accepted Answer

A: moles

Question 6

Which setup is correct for finding moles?

Revolt · Accepted Answer

B:

Question 7

Which setup is correct to find liters?

Revolt · Accepted Answer

B:

Question 8

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

Revolt · Accepted Answer

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.

Question 9

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

Revolt · Accepted Answer

B: Add more water to the solution.; C: Remove a small amount of the solution and mix it with water.

Question 10

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?

Revolt · Accepted Answer

A:

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