Chemistry Molarity

Calculate the molarity of 5.5 moles of NaCl dissolved in 2.5 L of solution.

• 13.75 M

• 1.375 M

• 2.2 M

• 2.5 M

Arturo is working to prepare a solution. He has 300 mL of a 4.5 M stock solution. What would the total volume of a solution need to be to the make the molarity 3.7M?

• 365 mL

• 64.9 mL

• 247 mL

• 3.6 mL

The idea that the number of atoms of molecules in a substance is proportional to its physical mass is accredited to-

• Amedeo Avogadro

• Timothy Taiwo

• Jorge Hernandez

• Keisha Vigil

Tags

NGSS.HS-PS1-7

What is the molarity of 4 g of NaCl (M_r NaCl=58.45 g mol^-1) in 3800 mL of solution?

• 0.018 M

• 0.0011 M

• 1.052 M

• 0.062 M

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

• 15.9 M

• 0.636 M

• 0.642 M

• 1.59 M

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules

• 180 molecules

• 180 g

• 6.02 x 10²³ molecules

Molarity is measured in _____.

• moles per g.

• mols per L.

• moles per mm.

• moles per mL.

Tags

NGSS.HS-PS1-5

A solution is prepared by dissolving 5 moles of solute in 2 liters of solution. What is the molarity of the solution?

• 2.5 M

• 5 M

• 10 M

• 0.4 M

What is the molarity of a solution containing 58.5 g of NaCl (molar mass = 58.5 g/mol) in 1 liter of water?

• 1 M

• 0.5 M

• 2 M

• 0.1 M

If 250 mL of a 3 M solution is diluted to 1 L, what is the new molarity?

• 0.75 M

• 1 M

• 0.5 M

• 3 M