Percent by Mass Solution

Calculate the mass percent of solution, that contains 100g of sugar and 400g of water.

• 30%

• 25%

• 20%

• 15%

Calculate the percent concentration of a solution made with 100 g of sugar and 400 g of water

• 30

• 25

• 20

• 15

In this mixture, which of the following will be the solute?

• The water in the glass

• The glass that holds the final mixture

• The solution containing both powder and water

• The powder on the spoon

Tags

NGSS.MS-PS1-2

In a chemistry class, King prepared a solution by mixing 25 g of sugar in 80 g of water. What are the concentrations of the solute and solvent in percent (%) by mass?

• Solute: 34%, Solvent: 66%

• Solute: 14%, Solvent: 86%

• Solute: 24%, Solvent: 76%

• Solute: 44%, Solvent: 56%

What is the percent by mass in the following solution: 5g of sucrose in 90g of water?

• 4%

• 5%

• 6%

• 7%

What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?

• 10.0 %

• 11.1 %

• 80.0 %

• 20.0 %

Answer explanation

20g / (180g+ 20g) x 100 = 10 %

What is the percent by mass of a solution made by dissolving 10.0 g of NaCl into 180.0 g of water?

• 5.26 %

• 5.56 %

• 180.0 %

• 20.0 %

Answer explanation

10 g / (10 g + 180 g) x 100 = 5.26 %

What is the percent by mass of a solution containing 56.5 g of salt in 500 g of water?

• 11.3 %

• 5.56%

• 8.85%

• 10.2 %

Answer explanation

56.5g / ( 56.5g + 500g) x 100 = 10.2 %

A solution is made by dissolving 10 g of salt in 90 g of water. What is the percent by mass of the salt in the solution?

• 10%

• 11.1%

• 9.1%

• 12%

If a solution contains 15 g of sugar and 85 g of water, what is the percent by mass of sugar in the solution?

• 15%

• 17.6%

• 18%

• 14.5%