Concentration is

• the amount of solute in the solvent

• the amount of solvent in the solute

• density

• particle size

Tags

NGSS.HS-PS1-5

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt

Solution 2:

500 mL of water

90 g of salt

• Solution 1

• Solution 2

• They have the same concentration

• I have no idea

In order to dilute a solution, you need to

• add more of the solid

• add more water

• find the mass

• find the volume

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

How many moles of solute are contained in 3.0 L of a 1.5 M solution?

• 4.5 moles
• 1.5 moles
• 2.0 moles
• 0.5 moles

When a solution is very concentrated, it has a high amount of _________ to _________.

• solute to solvent
• solvent to solute
• solvent to solution
• solution to solute

Tags

NGSS.HS-PS1-5

Which is an example of a solvent?

• Salt
• Egg whites
• Water
• Sugar

You can make a solution more concentrated by adding __________.

• solute
• solvent
• water

Tags

NGSS.HS-PS1-5

What is the molarity of 2.5 mol of NaOH in 12.0 L of solution?

• 0.21 M
• 30 M
• 4.8 M
• 20.8 M

Tags

NGSS.HS-PS1-7

Molarity is measured in _____.

• moles per g.

• mols per L.

• moles per mm.

• moles per mL.

Tags

NGSS.HS-PS1-5