Concentration

What is referred to as the dissolving substance of a solution

• solvent

• solute

• salt

• solution

A solution that has a large amount of solute for a certain volume of solvent.

• salt solution

• water

• concentrated

• diluted

A unit of concentration especially when reporting low concentrations.

• mole fraction

• ppm

• molarity

• molality

What percent concentration of rubbing alcohol is recommended for sanitation/disinfection?

• 40%

• 50%

• 70%

• 99%

It is defined as the ratio of the mass of the solute to the mass of the solution.

• mole fraction

• percent by volume

• percent by mass

• ppm

What mass of solute is needed to make 100 g of 3.4% solution?

• 0.34 g

• 3.4 g

• 34 g

• 0.034 g

What volume of isopropyl alcohol is used to make 350 mL of 70 % rubbing alcohol?

• 245 g

• 350 g

• 100 g

• 250 g

What variable is represented by mole fraction?

• M

• m

• X

• ppm