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's calculated by summing the atomic masses of all atoms in the formula.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( MW \) — Molar mass (g/mol)
• \( \text{atomic mass} \) — Standard atomic weight of each element
• \( \text{count} \) — Number of atoms of each element in the formula

Explanation: The calculator parses the chemical formula, identifies each element and its count, then sums the products of atomic masses and counts.

3. Importance of Molar Mass

Details: Molar mass is essential for stoichiometric calculations, preparing solutions with specific concentrations, and converting between mass and moles of a substance.

4. Using the Calculator

Tips: Enter the chemical formula using standard notation (e.g., H2O for water, C6H12O6 for glucose). Element symbols are case-sensitive (first letter uppercase, second lowercase if present).

5. Frequently Asked Questions (FAQ)

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

Q2: How are atomic masses determined?
A: Atomic masses are weighted averages of isotopic masses based on their natural abundances.

Q3: Does the calculator work for ionic compounds?
A: Yes, it works for any chemical formula including ionic compounds (e.g., NaCl, CaCO3).

Q4: What if my formula contains parentheses?
A: This basic version doesn't handle parentheses or complex formulas with nested groups.

Q5: How accurate are the results?
A: Results use standard atomic weights and are accurate to 2 decimal places for most purposes.