1. What is Molar Mass?

Molar mass is the mass of one mole of a substance (chemical element or chemical compound) measured in grams per mole (g/mol). It is calculated as the sum of the atomic masses of all atoms in a given formula.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( MW \) — Molar mass (g/mol)
• \( \sum \) — Sum of all atomic masses in the formula

Explanation: The calculator parses the chemical formula and sums the atomic weights of all atoms in the formula, accounting for their quantities.

3. Importance of Molar Mass

Details: Molar mass is essential for stoichiometric calculations, solution preparation, and converting between grams and moles in chemical reactions.

4. Using the Calculator

Tips: Enter the chemical formula using standard notation (e.g., H2O for water, C6H12O6 for glucose). Subscripts should come immediately after the element symbol.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between molecular weight and molar mass?
A: While often used interchangeably, molecular weight refers to single molecules (in atomic mass units), while molar mass refers to a mole of substance (in g/mol).

Q2: How do you calculate molar mass of a hydrate?
A: Include the water molecules in the formula (e.g., CuSO4·5H2O) and calculate the total mass including all water molecules.

Q3: What about ionic compounds?
A: The calculation is the same - use the formula unit (e.g., NaCl for sodium chloride) and sum the atomic masses.

Q4: How accurate is this calculator?
A: The accuracy depends on the atomic weight database used. For precise work, use IUPAC's most recent atomic weights.

Q5: Can this calculator handle complex formulas?
A: It handles standard chemical notation, but may not recognize all elements or complex notations like coordination compounds.