Ch.3 - Chemical ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: What mass of NaCl is contained in 24.88 g of a 15.00% by mass solution of NaCl in water?20.00 g 21.15 g 3.73 g 1.50 g 12.44 g

Solution: What mass of NaCl is contained in 24.88 g of a 15.00% by mass solution of NaCl in water?20.00 g 21.15 g 3.73 g 1.50 g 12.44 g

Problem

What mass of NaCl is contained in 24.88 g of a 15.00% by mass solution of NaCl in water?

  1. 20.00 g
     
  2. 21.15 g
     
  3. 3.73 g
     
  4. 1.50 g
     
  5. 12.44 g
Solution

We’re being asked to calculate the mass of NaCl in a 15.00% by mass solution of NaCl.


We’re given the mass percent of the solution and we're going to use the mass percent formula shown below:

mass percent=mass componenttotal mass×100


Since we are dealing with a solution, we can rewrite the equation as:

% mass=mass solutemass solution×100


Calculate the mass of NaCl:

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