1. What is a Mole?

The mole is the SI unit of measurement for amount of substance. One mole contains exactly 6.02214076×10²³ elementary entities (atoms, molecules, ions, or other particles).

2. How Does the Calculator Work?

The calculator uses the mole formula:

Where:

• \( n \) — Amount of substance (moles)
• \( mass \) — Mass of the substance (grams)
• \( MW \) — Molecular weight (grams per mole)

Explanation: This simple calculation converts between mass and number of particles using the molecular weight as a conversion factor.

3. Importance of Mole Calculation

Details: Mole calculations are fundamental in chemistry for stoichiometric calculations, solution preparation, and chemical reaction balancing.

4. Using the Calculator

Tips: Enter mass in grams and molecular weight in g/mol. Both values must be positive numbers. The result will be in moles.

5. Frequently Asked Questions (FAQ)

Q1: What is Avogadro's number?
A: Avogadro's number (6.022×10²³) is the number of particles in one mole of a substance.

Q2: How do I find molecular weight?
A: Molecular weight is the sum of atomic weights of all atoms in a molecule, available on periodic tables.

Q3: Can I use this for elements and compounds?
A: Yes, this works for both elements (use atomic weight) and compounds (use molecular weight).

Q4: What's the difference between mole and molarity?
A: Moles measure amount of substance, while molarity (M) measures concentration (moles per liter of solution).

Q5: Why is the mole important in chemistry?
A: It allows chemists to count particles by weighing them, making chemical measurements practical.