1. What is Molarity?

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution. It is a fundamental concept in chemistry and physiology for preparing physiological solutions and calculating concentrations.

2. How Does the Calculator Work?

The calculator uses the molarity formula:

Where:

• \( M \) — Molarity (mol/L)
• \( n \) — Moles of solute (mol)
• \( V \) — Volume of solution (L)

Explanation: The equation calculates the concentration of a solution by dividing the amount of solute (in moles) by the volume of the solution (in liters).

3. Importance of Molarity in Physiology

Details: Accurate molarity calculations are essential for preparing physiological solutions, determining drug concentrations, and maintaining proper osmotic balance in biological systems.

4. Using the Calculator

Tips: Enter moles of solute in mol and volume of solution in liters. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent.

Q2: Why is molarity important in physiological solutions?
A: Molarity helps maintain proper osmotic pressure and ion concentrations in biological fluids.

Q3: How do I convert grams to moles?
A: Divide the mass in grams by the molecular weight of the substance.

Q4: Can I use different volume units?
A: Yes, but you must convert to liters for this calculator as molarity is defined per liter.

Q5: What are typical molarity values for physiological solutions?
A: Physiological saline is approximately 0.15 M NaCl, while glucose solutions vary based on concentration.