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Lesson: Concentration, Mass, and Volume

Worksheet • 25 Questions


What volume of a 1.50-M K B r solution contains 6 6 . 0 g K B r ?


If 0.850 L of a 5.00-M solution of copper nitrate, C u ( N O ) 3 2 , is diluted to a volume of 1.80 L by the addition of water, what is the molarity of the diluted solution?


Which of the following is a valid expression of molality ( 𝑁 ) ?

  • A mol/kg
  • B L/g
  • C kg/mol
  • D g/mol
  • E mol/L


A liter of air contains 9 . 2 Γ— 1 0 βˆ’ 4 mol argon. What is the mass of A r in a liter of air?


Calculate the mass of sodium chloride that must be added to water to prepare 80.0 mL of a 0.800 M solution.


What is the concentration of the solution that results from diluting 25.0 mL of a 2.04 M solution of C H O H 3 to 500.0 mL?


What volume of a 0.575-M solution of glucose, C H O 6 1 2 6 , can be prepared from 50.00 mL of a 3.00-M glucose solution?


The concentration of acetic acid ( C H C O H ) 3 2 in a sample of vinegar is 0.839 M. What volume of this vinegar contains 75.6 g of acetic acid?


How many grams of N a C l are contained in 0.250 L of a 5.30 M solution?


Wine is approximately 1 2 % ethanol ( C H C H O H ) 3 2 by volume. Ethanol has a molar mass of 46.06 g/mol and a density 0.789 g/mL. How many moles of ethanol are present in a 750 mL bottle of wine?


What is the mass of 2.561 mol of gold?


What volume of 1.59 M aqueous K O H is required to prepare 5.00 L of 0.100 M aqueous K O H ?


How much sugar (in moles) is contained in a modest sip (∼10 mL) of a soft drink, if the concentration of sugar is 0.375 M?


A solution is prepared by dissolving 1.60 g of solid N a C l in 50.0 mL of 0.100 M aqueous C a C l 2 . Assuming the volume of the solution does not change, calculate the concentration of chloride ions in this solution.


What volume of 0 . 1 2 M H B r can be prepared from 11 mL (0.011 L) of 0 . 4 5 M H B r ?


Calculate the mass of methanol that must be added to water to prepare 2.66 L of a 1.35 M solution.


A 355 ml soft drink sample contains 0.133 mol of sucrose (table sugar). What is the molar concentration of sucrose in the beverage?


Rubbing alcohol (isopropanol) is usually sold as a 7 0 % vol aqueous solution. If the density of isopropyl alcohol is 0.785 g/mL, calculate to 3 significant figures the number of grams of isopropyl alcohol present in a 355 mL bottle of rubbing alcohol.


How many milliliters of a 0.100 M potassium permanganate stock solution would be needed to make 100 mL of 0.0250 M potassium permanganate?


A 0.2104 M aqueous solution of sodium sulfate has a total volume of 900 mL.

Calculate the mass of sodium ions in this solution.

Calculate the mass of sulfate ions in this solution.


A laboratory experiment calls for 0 . 1 2 5 M H N O 3 . What volume of 0 . 1 2 5 M H N O 3 can be prepared from 0.250 L of 1 . 8 8 M H N O 3 ?


An aqueous solution of 62.00 g iron(III) iodide is diluted to a volume of 725 mL. Calculate the concentration of iodide ions in this solution.


Concentrated hydrochloric acid is an aqueous solution containing 3 7 . 2 % H C l by mass. The density of this solution is 1.19 g/mL. What mass of H C l is contained in 0.500 L of this solution?


If 4.94 g of K O H is dissolved in water to make a final volume of 2.0 L, what is the molarity of the solution?

  • A 0.044 M
  • B 0.18 M
  • C 0.088 M
  • D 0.025 M
  • E 2.5 M


How many grams of C a C l 2 (110.98 g/mol) are contained in 250.0 mL of a 0.200 M solution of calcium chloride?