1. What is Molarity?

Molarity (M) is a unit of concentration representing the number of moles of a solute per liter of solution. It's one of the most common ways to express concentration in chemistry and biology.

2. How Does the Calculator Work?

The calculator uses the molarity formula:

Where:

• \( M \) — Molarity (mol/L)
• \( C \) — Concentration (mg/mL)
• \( MW \) — Molecular weight (g/mol)

Explanation: The formula converts mass concentration (mg/mL) to molar concentration (mol/L) by dividing by the molecular weight.

3. Importance of Molarity Calculation

Details: Accurate molarity calculations are essential for preparing solutions, conducting experiments, and ensuring proper stoichiometry in chemical reactions.

4. Using the Calculator

Tips: Enter concentration in mg/mL and molecular weight in g/mol. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert mg/mL to molarity?
A: Molarity is often more useful than mass concentration because chemical reactions depend on the number of molecules, not their mass.

Q2: How do I find molecular weight?
A: Molecular weight is the sum of atomic weights of all atoms in a molecule. You can find it in chemical databases or calculate it from the chemical formula.

Q3: What's the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity is temperature-dependent, molality is not.

Q4: Can I use this for mixtures?
A: This calculator is for single compounds. For mixtures, you need to calculate each component separately.

Q5: How precise should my measurements be?
A: For most laboratory work, 3-4 significant figures are sufficient, but follow your specific protocol requirements.