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How do chemists describe the "strength" or concentration of a solution?

• molarity

• concentrated

• diluted

• strong

Tags

NGSS.HS-PS1-5

If 20.0 mL of a 3.80 M solution is diluted to 50.0 mL, what is the ending molarity?

• 1.52

• 2.67

• 2.95

• 5.62

If 30.0 mL of a solution that has a 1.82 M is diluted to 1.14 M, what is the VOLUME of my ending solution?

• .07mL

• 19mL

• 47.9mL

• 63.8mL

What is the molarity of 4.00 grams of KNO₃ in 3.80 L of solution?

• 0.0104 M

• 0.0207 M

• 1.05 M

• 1.08 M

Calculate the molarity of the following solution:  400.0 g of CuSO₄ (molar mass = 159.60 g/mol) in 4.00 L solution.

• 100. M

• 251 M

• 0.627 M

• 1.60 M

What is the molarity of a solution of NH₄Cl prepared by diluting 0.5 L of a 3.79 M NH₄Cl solution to 2.00 L?

• 7.58 M

• 0.26 M

• 2.66 M

• 0.9475 M

1.     If a chemist starts with 25 mL  of 6M HCl and prepares a new solution with a concentration of 0.5M, what with be the new volume?

• 200 mL

• 500 mL

• 300 mL

• 400 mL

Tags

NGSS.HS-PS1-5

A chemist dilutes 25 mL of a 2M solution to make 500 mL of new solution.  What is the molar concentration of the new solution?

• 0.1 M

• 0.2 M

• 0.5 M

• 1.0 M

Which of the following is the Dilution Formula?

• V₁M₁ = V₂M₂

• M = m/V

• V = mT

• PV = nRT

How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl?

• 7.5 mL

• 15 mL

• 1333 mL

• 200 mL