1. What is Millimolar Concentration?

Millimolar (mM) is a unit of concentration representing millimoles per liter (mmol/L). It's commonly used in chemistry and biochemistry to express the concentration of solutions.

2. How Does the Calculator Work?

The calculator uses the millimolar concentration equation:

Where:

• \( mmol \) — Amount of substance in millimoles
• \( L \) — Volume in liters

Explanation: The equation calculates concentration by dividing the amount of substance by the volume of solution.

3. Importance of mM Calculation

Details: Accurate concentration measurement is crucial for preparing solutions, conducting experiments, and ensuring proper chemical reactions in laboratory settings.

4. Using the Calculator

Tips: Enter the amount of substance in millimoles and the volume in liters. All values must be valid (mmol > 0, volume > 0).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between molar and millimolar?
A: 1 molar (M) = 1000 millimolar (mM). Molar uses moles per liter while millimolar uses millimoles per liter.

Q2: How do I convert grams to millimoles?
A: Divide the mass in grams by the molecular weight (g/mol) and multiply by 1000 to get millimoles.

Q3: Can I use milliliters instead of liters?
A: Yes, but you'll need to convert mL to L (divide by 1000) before using the calculator.

Q4: Why is concentration important in chemistry?
A: Concentration determines reaction rates, equilibrium positions, and is critical for reproducibility in experiments.

Q5: How precise should my measurements be?
A: Precision depends on your application. Analytical chemistry often requires 4+ significant figures.