Electrolytes/Molarity

A substance that conducts an electrical current when dissolved in water is called

• catalyst

• metalloid

• electrolyte

• nonelectrolyte

Which solution would be least likely to carry an electric current?

• NaCl
• HCl
• C₆H₁₂O₆
• CsI

Tags

NGSS.HS-PS1-3

A solute that contains polar molecules will dissolve in a solvent that contains

• nonpolar molecules
• polar molecules
• covalent molecules
• equal-sized molecules

Which of the following containers most likely contains sugar?

A B

• Container A because it forms ions.

• Container B because it forms ions.

• Container A because it does not form ions.

• Container B because it does not form ions.

Tags

NGSS.HS-PS1-2

How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 

• 2
• 3
• 4
• 6 

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

• 0.018 M
• 0.0011 M
• 1.052 M
• 0.062 M

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

• 0.625 g NaCl
• 625 g NaCl
• 36.5 g NaCl
• 0.04 mol NaCl

Tags

NGSS.HS-PS1-7

Find the molarity of 186.55 g of sucrose, C₁₂H₂₂O₁₁ (MM = 342) in 250 mL of water.

• 2.18 M
• 0.746 M
• 1.18 M
• 0.545 M

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

• 1074 mol
• 0.069 mol
• 1.07 mol
• 62.7 mol

Tags

NGSS.HS-PS1-7

Which sweet tea would you expect to taste the sweetest?

• 1M
• 3M
• 3.1M
• 2.5M