What is the moler mass AL2S3

What is the moler mass AL2S3

The Correct Answer and Explanation is:

The molar mass of aluminum sulfide (Al₂S₃) can be calculated by summing the atomic masses of aluminum (Al) and sulfur (S) atoms in the compound.

Step 1: Determine Atomic Masses

1. Aluminum (Al): The atomic mass of aluminum is approximately 26.98 g/mol.
2. Sulfur (S): The atomic mass of sulfur is approximately 32.07 g/mol.

Step 2: Determine Quantity of Each Element

The formula Al₂S₃ indicates that each molecule of aluminum sulfide contains:

• 2 aluminum atoms
• 3 sulfur atoms

Step 3: Calculate the Molar Mass

1. Aluminum contribution: Multiply the atomic mass of aluminum by the number of atoms:
   [
   2 \times 26.98 = 53.96 \, \text{g/mol}
   ]
2. Sulfur contribution: Multiply the atomic mass of sulfur by the number of atoms:
   [
   3 \times 32.07 = 96.21 \, \text{g/mol}
   ]
3. Total molar mass of Al₂S₃:
   [
   53.96 + 96.21 = 150.17 \, \text{g/mol}
   ]

Therefore, the molar mass of Al₂S₃ is 150.17 g/mol.

Explanation (300 Words)

Molar mass is the mass of one mole of a given substance and is expressed in grams per mole (g/mol). For compounds like aluminum sulfide (Al₂S₃), the molar mass is obtained by adding together the atomic masses of the individual atoms present, each multiplied by its respective number within the molecule.

The compound Al₂S₃ consists of two aluminum atoms and three sulfur atoms. Atomic masses, sourced from the periodic table, are essential for determining molar mass. Here, aluminum has an atomic mass of 26.98 g/mol, and sulfur has an atomic mass of 32.07 g/mol. Multiplying these atomic masses by the number of atoms in the molecule gives the partial molar contributions from each element: aluminum’s two atoms contribute 53.96 g/mol, and sulfur’s three atoms contribute 96.21 g/mol. Adding these yields the molar mass of Al₂S₃: 150.17 g/mol.

The concept of molar mass is crucial in chemistry for converting between moles and grams, which is often necessary for chemical reactions. Knowing the molar mass of Al₂S₃ allows chemists to calculate the amount needed or produced in reactions involving aluminum sulfide.