1. What is Molar Mass?

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It's calculated by summing the atomic masses of all atoms in a molecule.

2. How is Molar Mass Calculated?

The molar mass is calculated using the formula:

Where:

• \( MW \) — Molar mass (g/mol)
• \( atoms \) — Number of atoms of each element
• \( atomic\ masses \) — Standard atomic weight of each element

Example: For H₂O (water):

• 2 Hydrogen atoms × 1.008 g/mol = 2.016 g/mol
• 1 Oxygen atom × 15.999 g/mol = 15.999 g/mol
• Total = 2.016 + 15.999 = 18.015 g/mol

3. Importance of Molar Mass

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

4. Using the Calculator

Tips: Enter the chemical formula (e.g., H2O, C6H12O6). The calculator will parse the formula and show step-by-step calculations for each element's contribution to the total molar mass.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between molecular weight and molar mass?
A: They're numerically identical but molecular weight is dimensionless while molar mass has units of g/mol.

Q2: How accurate are these calculations?
A: Accuracy depends on the precision of atomic weights used. We use IUPAC recommended values.

Q3: Does this work for ionic compounds?
A: Yes, the same calculation applies to ionic compounds like NaCl.

Q4: What about hydrates?
A: For hydrates (e.g., CuSO₄·5H₂O), include the water molecules in the formula.

Q5: How are parentheses handled in formulas?
A: This calculator uses a simple parser. For complex formulas, consider using a more advanced tool.