Question

To write the percent concentration as a conversion factor and to use the percent concentration as a conversion factor. The percent concentration of a solution can be written in several different ways, including the mass percent, the volume percent, and the mass/volume percent. The percent concentration of a solution can be used as a conversion factor to determine information such as the amount of solute or amount of solution. For example, a 4% (m/m) solution means that there are 4 g of solute in 100 g of solution. Therefore, a 4% solution (m/m) could be written as the following conversion factors: 4 g solute100 g solution and 100 g solution4 g solute

A.

How many grams (of mass m) of glucose are in 155 mL of a 5.50% (m/v) glucose solution?

Express your answer with the appropriate units.

B.

You have a solution that is 18.5% (v/v) methyl alcohol. If the bottle contains 3.00 L of solution, what is the volume (V) in milliliters of methyl alcohol?

Express your answer with the appropriate units.

C.

A 6.00 % (m/v) NaCl solution contains 31.3 g of NaCl. What is the total volume (V) of the solution in milliliters?

Express your answer with the appropriate units.

Calculate the final concentration of each of the following diluted solutions.

A.

4.0 L of a 4.0 M HNO3 solution is added to water so that the final volume is 8.0 L .

Express your answer using two significant figures.

B.

Water is added to 0.35 L of a 6.0 M KOH solution to make 2.0 L of a diluted KOH solution.

Express your answer using two significant figures.

C.

A 95.0 mL sample of 8.0 % (m/v) NaOH is diluted with water so that the final volume is 200.0 mL .

Express your answer using two significant figures.

D.

A 7.0 mL sample of 50.0 % (m/v) acetic acid (HC2H3O2) solution is added to water to give a final volume of 25 mL .

Express your answer using two significant figures.

Determine the initial volume, in milliliters, required to prepare each of the following:

A.

21.0 mL of a 0.250 MKNO3 solution from a 6.20 M KNO3 solution

Express your answer with the appropriate units.

B.

21.0 mL of 2.50 MH2SO4 solution using a 11.4 M H2SO4 solution

Express your answer with the appropriate units.

C.

0.700 L of a 1.50 MNH4Cl solution using a 11.0 M NH4Cl solution

Express your answer with the appropriate units.

Answer 1

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