Computing for Concentration (% mass and % volume)

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt

Solution 2:

500 mL of water

60 g of salt

• Solution 1

• Solution 2

• They are equally diluted

What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?

• 0.014 %

• 0.13%

• 1.4 %

A student mixes 45.65g of salt with 155.20g of water. What is the mass of the solution?

• 210.50g
• 150.00g
• 200.85g
• 180.75g

If 35.75g of sugar is dissolved in 112.50g of water, what is the percent by mass of sugar in the solution?

• 24.11%

• 18.75%
• 30.50%
• 15.00%

A solution is made by mixing 28.50g of NaCl with 71.50g of water. What is the percent by mass of NaCl in the solution?

• 35.50%
• 25.00%
• 28.50%
• 30.00%

If a solution contains 62.25g of solute and the total mass of the solution is 195.75g, what is the percent by mass of the solute?

• 25.5%
• 40.2%
• 31.8%
• 15.0%

You have 75.50g of a solution that contains 19.85g of solute. What is the mass percent of the solute?

• 26.29%

• 32.50%
• 20.00%
• 15.00%

A solution consists of 48.75g of KCl dissolved in 102.25g of water. What is the total mass of the solution?

• 120g
• 200g
• 151g
• 100g

A solution contains 54.30g of a solute and 128.70g of solvent. What is the mass percent of the solute?

• 25.00%
• 32.50%
• 27.10%
• 29.67%

A student has a solution that weighs 83.45g and contains 28.95g of solute. What is the percent by mass of solute in the solution?

• 25.00%
• 34.69%
• 40.50%
• 50.00%