solution concentration

What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 

• 3
• 1
• 6
• 9

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

What is the molality of a solution containing 1.3 mol in 13.4 kg of solution?

• 9.7 m
• 17.42 m
• 0.097 m

What is the molality of 1.2 g of HCl in 750 g of solution?

• 0.04 m
• 0.00004 m
• 0.0016 m

Tags

NGSS.HS-PS1-7

Calculate the concentration in % mass of a solution containing 20.0 g of NaCl dissolved in 250.0 g of H₂O.

• 6.76%

• 7.41%

• 8.00%

• 8.25%

Calculate the molality when 50 g of MgCl₂ is dissolved in 300 g of solvent.

• 1.58 m 
• 1.75 m
• 167 m
• 1.67 m

If 1.65 L of water is added to 125 g of NaOH, what is the mole fraction of WATER?

• 1.03
• 0.0330
• 0.967
• 0.916

A solution is made by adding 35 mL of methanol (CH₃OH) until the final volume of the solution is 275 mL. If the density of methanol is 0.792 g/mL, what is the molarity of the solution?

• 3.42 M
• 3.15 M
• 2.43 M
• 4.42 M

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 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