1. What is the Mole Formula?

The mole formula (n = m/MW) relates the amount of substance (in moles) to its mass and molecular weight. It's a fundamental calculation in chemistry for quantifying chemical amounts.

2. How Does the Calculator Work?

The calculator uses the mole formula:

Where:

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

Explanation: The formula converts mass to moles using the substance's molecular weight as a conversion factor.

3. Importance of Mole Calculation

Details: Mole calculations are essential for stoichiometry in chemical reactions, solution preparation, and determining reaction yields.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is a mole in chemistry?
A: A mole is the SI unit for amount of substance, representing exactly 6.02214076×10²³ elementary entities (atoms, molecules, etc.).

Q2: How do I find molecular weight?
A: Sum the atomic weights of all atoms in the molecule. For example, water (H₂O) has MW = 2(1.008) + 15.999 = 18.015 g/mol.

Q3: Can I use this for elements?
A: Yes, use the atomic weight from the periodic table as the MW for elements.

Q4: What about non-molecular compounds?
A: For ionic compounds, use the formula weight (sum of atomic weights in the empirical formula).

Q5: Why is mole concept important?
A: It allows chemists to count particles by weighing, making chemical calculations practical at laboratory scales.