Concentration Formula & Calculations

The video tutorial explains the concept of concentration in solutions, comparing concentrated and dilute solutions. It introduces two methods for calculating concentration: using moles and volume, and using mass and volume. The tutorial demonstrates how to use formula triangles to find any quantity by covering the desired variable and performing multiplication or division. It includes practical examples and emphasizes the importance of units in calculations.

What is the main difference between a concentrated solution and a dilute solution?

• Both have the same number of solute particles.

• A dilute solution has more solute particles.

• A concentrated solution has more solute particles.

• A concentrated solution has fewer solute particles.

How do you convert 500 cubic centimeters to decimeters cubed?

• Multiply by 1000

• Divide by 1000

• Multiply by 100

• Divide by 100

If you have 2 moles of a substance in 2 liters of solution, what is the concentration?

• 4 moles per decimeter cubed

• 2 moles per decimeter cubed

• 1 mole per decimeter cubed

• 0.5 moles per decimeter cubed

What unit is used when calculating concentration using mass?

• Moles per decimeter cubed

• Grams per liter

• Grams per decimeter cubed

• Kilograms per liter

To find the mass needed for a specific concentration, which formula should you use?

• Mass divided by volume

• Volume divided by mass

• Moles divided by volume

• Volume divided by moles