Concentrations of Solutions

Which of the following computation for concentration of solution will be used to compute for this problem:

Add 100 grams of sugar in 500 mL of water.

• Percent by Mass

• Percent by Volume

• Percent by Mass/Volume

TRUE OR FALSE. Solutions is a system in which one or more substances are homogenously mixed.

• TRUE

• FALSE

TRUE or FALSE. Percent by mass is also expressed as %w/w.

• TRUE

• FALSE

A solution with a large amount of solute is called _________

• dilute

• saturated

• concentrated

• homogeneous

A ratio comparing the amount of solute to the amount of solution.

• concentration

• solution

• mass

• volume

If 3.0 g of sugar is mixed in water to make 30 mL of solution, its concentration is:

• 0.1 g/mL

• 0.1 %

• 0.1 mL/g

• 1.0%

A solution with only  a small amount  of solute is called a ______ solution.

• dilute

• saturated

• concentrated

• homogeneous

Suppose that a solution was prepared by dissolving 18.0 g of sugar into 100g of water. The percent by mass in the nearest whole number would be calculated as follows:

• 15%

• 18%

• 6%

• 82%

If a solution is made by taking 70 mL of ethanol and adding enough water to make 750 mL of solution, the percent volume is:

• 9.3%

• 10.7%

• 0.09%

• 70%

If a solution is prepared from 5g NaCl in enough water to make a 120mL solution, the mass-volume concentration is:

• 0.04%

• 4.2%

• 24%

• 6.7%