1. What is Molar Mass?

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( n_H \) — Number of hydrogen atoms
• \( n_S \) — Number of sulfur atoms
• \( n_O \) — Number of oxygen atoms
• 1.008 — Atomic mass of hydrogen (g/mol)
• 32.06 — Atomic mass of sulfur (g/mol)
• 16.00 — Atomic mass of oxygen (g/mol)

Explanation: The calculator sums the products of atom counts and their respective atomic masses to determine the total molar mass.

3. Importance of Molar Mass Calculation

Details: Molar mass is fundamental in chemistry for stoichiometric calculations, converting between mass and moles, and determining empirical and molecular formulas.

4. Using the Calculator

Tips: Enter the number of hydrogen, sulfur, and oxygen atoms in your compound. The calculator will compute the molar mass based on standard atomic weights.

5. Frequently Asked Questions (FAQ)

Q1: What is the molar mass of sulfuric acid (H₂SO₄)?
A: For H₂SO₄: (2×1.008) + (1×32.06) + (4×16.00) = 98.08 g/mol

Q2: Why are atomic masses not whole numbers?
A: Atomic masses are weighted averages of naturally occurring isotopes, accounting for their relative abundances.

Q3: Can I calculate molar mass for any compound?
A: Yes, by summing the atomic masses of all atoms in the molecule using their standard atomic weights.

Q4: How accurate are the atomic masses used?
A: The calculator uses standard atomic weights from IUPAC, which are periodically updated based on latest scientific measurements.

Q5: What's the difference between molecular weight and molar mass?
A: Molecular weight is dimensionless (relative to carbon-12), while molar mass has units of g/mol, but numerically they are identical.