1. What is a Mole?

A mole is a unit of measurement in chemistry that represents 6.022 × 10²³ particles (Avogadro's number). It's a fundamental concept for quantifying amounts of chemical substances.

2. How Does the Calculator Work?

The calculator uses the mole formula:

Where:

• Mass — The weight of the substance in grams
• Molecular Weight — The sum of atomic weights of all atoms in the molecule

Explanation: This simple division converts grams to moles, allowing chemists to work with particle counts rather than mass.

3. Importance of Mole Calculation

Details: Moles are essential for stoichiometric calculations, preparing solutions with specific molarity, and balancing chemical equations.

4. Using the Calculator

Tips: Enter mass in grams and molecular weight in g/mol. Both values must be positive numbers. The molecular weight can be found on the periodic table or calculated from the chemical formula.

5. Frequently Asked Questions (FAQ)

Q1: Why use moles instead of grams?
A: Moles allow chemists to count particles (atoms, molecules) directly, which is necessary for chemical reactions that depend on particle ratios.

Q2: What's Avogadro's number?
A: 6.022 × 10²³ - the number of particles in one mole of any substance, analogous to how a dozen means 12 items.

Q3: How do I find molecular weight?
A: Sum the atomic weights of all atoms in the molecule. For example, H₂O = (2 × 1.008) + 15.999 = 18.015 g/mol.

Q4: Can I use this for elements and compounds?
A: Yes, the calculation works for both pure elements and chemical compounds.

Q5: What if my substance is in milligrams?
A: Convert to grams first (divide mg by 1000) before using the calculator.