1. What is Sodium Sulfide (Na₂S)?

Sodium sulfide is an inorganic chemical compound with the formula Na₂S. It's a colorless water-soluble salt that gives strongly alkaline solutions. The University of Sydney uses this compound in various chemistry experiments and research projects.

2. How Does the Calculator Work?

The calculator uses the molar mass equation:

Where:

• Atomic Mass of Na — 22.98977 g/mol (standard value)
• Atomic Mass of S — 32.065 g/mol (standard value)

Explanation: The equation accounts for 2 sodium atoms and 1 sulfur atom in the Na₂S molecule.

3. Importance of Molar Mass Calculation

Details: Accurate molar mass calculation is crucial for preparing solutions, stoichiometric calculations, and chemical reactions in University of Sydney laboratories.

4. Using the Calculator

Tips: Enter atomic masses in g/mol. Default values are IUPAC standard atomic weights. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the standard molar mass of Na₂S?
A: The standard molar mass is 78.045 g/mol (2×22.98977 + 32.065).

Q2: Why does the University of Sydney need this calculator?
A: For accurate preparation of chemical solutions in teaching and research laboratories.

Q3: Can I use this for other compounds?
A: No, this is specific for Na₂S. Different compounds require different calculations.

Q4: What are common uses of Na₂S?
A: Used in water treatment, photography, textile industry, and chemical manufacturing.

Q5: Is Na₂S dangerous?
A: Yes, it's corrosive and releases toxic hydrogen sulfide gas. Handle with proper safety equipment.