## Questions and Answers

What is the unit of molarity?

Which of the following is NOT necessary to calculate molarity?

What is the molarity of a solution that contains 3 moles of solute in 2 liters of solution?

What is the main advantage of using molarity as a concentration unit?

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What is the formula to calculate molarity?

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## Study Notes

### Molarity

Molarity is a measure of the concentration of a solution.

### Definition:

Molarity (M) is the number of moles of solute per liter of solution.

### Formula:

Molarity (M) = Number of moles of solute / Liter of solution (L)

M = n / L

### Units:

- Molarity is expressed in units of moles per liter (mol/L)
- Often denoted by the symbol "M" (e.g., 1M, 2M, etc.)

### Calculation:

To calculate molarity, you need to know:

- The number of moles of solute (n)
- The volume of the solution in liters (L)

### Example:

- 2 moles of NaCl (solute) dissolved in 1 liter of water (solution)
- Molarity = 2 mol / 1 L = 2M

### Key Points:

- Molarity is a concentration unit that depends on the volume of the solution
- It is a useful way to express the concentration of a solution in a laboratory setting
- Molarity is often used in stoichiometric calculations and in chemical reactions

### Molarity

- Molarity is a measure of the concentration of a solution, defined as the number of moles of solute per liter of solution.

### Formula and Units

- Molarity (M) is calculated by dividing the number of moles of solute (n) by the liter of solution (L): M = n / L
- Expressed in units of moles per liter (mol/L), often denoted by the symbol "M" (e.g., 1M, 2M, etc.)

### Calculation Requirements

- To calculate molarity, you need to know the number of moles of solute (n) and the volume of the solution in liters (L)

### Example Calculation

- 2 moles of NaCl (solute) dissolved in 1 liter of water (solution) has a molarity of 2M (2 mol / 1 L)

### Key Characteristics and Applications

- Molarity is a concentration unit that depends on the volume of the solution
- It's a useful way to express the concentration of a solution in a laboratory setting
- Molarity is often used in stoichiometric calculations and chemical reactions

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## Description

Test your knowledge on molarity, a measure of concentration of a solution, including its definition, formula, units, and calculation.