Calculating Concentrations

The ___ is the thing being dissolved

• solute
• solvent

What is the molarity of 4 grams of sodium chloride (NaCl) in 3,800 mL of solution?

• 0.018 M
• 0.018 m
• 1.052 M
• 1.052 m

Tags

NGSS.HS-PS1-5

What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?

• 0.488 M
• 7.66 M
• 7.67 M
• 0.00767 M

Find the concentration of 186.55 g of sugar (C₁₂H₂₂O₁₁) in 250. mL of water.

• 2.18 molL^-1

• 2.17 molL^-1

• 1.18 molL^-1

• .00218 molL^-1

What does it mean if a mixture is heterogeneous?

• you can see the different parts
• cannot tell one part from another
• very well blended
• made of elements

What does it mean if a mixture is homogeneous?

• you can see the different parts
• cannot tell one part from another
• chunks of particles
• made of elements

Solvent is best defined as-

• a mixture in which the substances are spread out evenly between one another and cannot be told apart
• the ability of a substance to dissolve in another substance
• a substance that dissolves in another substance
• a substance into which another substance dissolves

Which answer best defines solute?

• a substance into which another substance dissolves
• a substance that dissolves in another substance
• to form a solution with another substance
• the ability of a substance to dissolve in another substance

What is the percent composition of a sugar solution where 10 grams of sugar is added to 100 grams of water?

• .10%
• 0.091%
• 9.090909%
• 9.1%

What is unsaturated?

• A solution with more solute than solvent
• A solution with less than the maximum amount of solutes 
• A solution with the  perfect balance of solutes and solvents
• A solution with solids at the bottom