Molar Mass Calculation:
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Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule.
The molar mass calculation for H₂SO₄ (Sulfuric Acid) follows the formula:
Where:
Step 1: Identify the number of each type of atom in H₂SO₄
- Hydrogen (H): 2 atoms
- Sulfur (S): 1 atom
- Oxygen (O): 4 atoms
Step 2: Multiply each atom count by its atomic mass
- Hydrogen: 2 × 1.008 = 2.016 g/mol
- Sulfur: 1 × 32.06 = 32.060 g/mol
- Oxygen: 4 × 16.00 = 64.000 g/mol
Step 3: Sum all the masses
- Total Molar Mass = 2.016 + 32.060 + 64.000 = 98.076 g/mol
Instructions: Enter the number of hydrogen, sulfur, and oxygen atoms in your molecule. The calculator will automatically compute the molar mass using standard atomic weights.
Q1: Why is the molar mass of H₂SO₄ approximately 98 g/mol?
A: This comes from summing the atomic masses: 2×1 (H) + 32 (S) + 4×16 (O) = 98 g/mol using rounded atomic masses.
Q2: What are the exact atomic masses used in calculation?
A: Hydrogen = 1.008 g/mol, Sulfur = 32.06 g/mol, Oxygen = 16.00 g/mol (based on IUPAC standards).
Q3: Can I calculate molar mass for other compounds?
A: Yes, simply adjust the number of atoms for each element in the calculator to get molar mass for any compound.
Q4: Why is molar mass important in chemistry?
A: Molar mass is essential for stoichiometric calculations, preparing solutions, and converting between mass and moles.
Q5: How accurate is this calculator?
A: The calculator uses standard atomic masses and provides results accurate to three decimal places.