Concentration

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

How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?

• 1.074 mol
• 62.7 mol
• 1.07 mol
• 62.7 grams

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

How many grams of solute are dissolved in 125.0 mL of 5.00M NaCl?

• 0.625 g NaCl
• 36.52 g NaCl
• 36.5 g NaCl
• 0.625 mol NaCl

Tags

NGSS.HS-PS1-7

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

Tags

NGSS.HS-PS1-5

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