1. What is Mass of Molecule Calculator?

Definition: This calculator determines the mass of a single molecule of a substance using its molar mass and Avogadro's number.

Purpose: It helps chemists and researchers understand the mass of individual molecules for theoretical calculations and experimental design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( M_{molecule} \) — Mass of one molecule (kg)
• \( M_{molar} \) — Molar mass of substance (kg/mol)
• \( N_A \) — Avogadro's number (6.02214076 × 10²³ mol⁻¹)

Explanation: The molar mass is divided by Avogadro's number to calculate the mass of a single molecule.

3. Importance of Molecular Mass Calculation

Details: Knowing individual molecule mass is crucial for stoichiometric calculations, gas law applications, and understanding molecular interactions.

4. Using the Calculator

Tips: Enter the molar mass in kg/mol. The calculator will output the mass of a single molecule in kilograms.

5. Frequently Asked Questions (FAQ)

Q1: What is Avogadro's number?
A: Avogadro's number (6.02214076 × 10²³) is the number of particles (atoms or molecules) in one mole of a substance.

Q2: Why is the result so small?
A: Molecules are extremely small, so their individual masses are very small numbers (typically 10⁻²⁶ to 10⁻²⁵ kg).

Q3: Can I use g/mol instead of kg/mol?
A: Yes, but the result will be in grams instead of kilograms. Multiply the result by 1000 to convert to kg.

Q4: How accurate is this calculation?
A: The calculation is theoretically exact, assuming you know the exact molar mass of your substance.

Q5: Does this work for all substances?
A: Yes, as long as you know the molar mass of the substance, this calculation works for any element or compound.