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 is calculated by summing the atomic masses of all atoms in a molecule.

2. How To Calculate Molar Mass

The molar mass is calculated using the formula:

For urea (CO(NH₂)₂), this becomes:

• 1 carbon atom × 12.01 g/mol
• 1 oxygen atom × 16.00 g/mol
• 2 nitrogen atoms × 14.01 g/mol
• 4 hydrogen atoms × 1.008 g/mol

Calculation: 12.01 + 16.00 + (2 × 14.01) + (4 × 1.008) = 60.06 g/mol

3. Urea Composition

Details: Urea, with the chemical formula CO(NH₂)₂, is an organic compound composed of carbon, oxygen, nitrogen, and hydrogen. It's the main nitrogen-containing substance in mammalian urine.

4. Using The Calculator

Tips: Enter the number of atoms for each element in your compound. The calculator uses standard atomic weights to compute the molar mass. Default values are set for urea.

5. Frequently Asked Questions (FAQ)

Q1: Why is molar mass important?
A: Molar mass is essential for stoichiometric calculations in chemistry, allowing conversion between mass and moles of a substance.

Q2: What are the standard atomic masses used?
A: The calculator uses IUPAC standard atomic weights: C=12.01, O=16.00, N=14.01, H=1.008 g/mol.

Q3: Can I calculate molar mass for other compounds?
A: Yes, simply adjust the number of atoms for each element to match your compound's formula.

Q4: Why is the calculated value 60.06 g/mol instead of exactly 60?
A: Atomic masses are weighted averages of naturally occurring isotopes, resulting in decimal values rather than whole numbers.

Q5: How accurate is this calculator?
A: The calculator provides results accurate to two decimal places using standard atomic weights. For precise laboratory work, consult specific isotopic composition data.