Question

What is the molar mass of KAlSi2O6?

Answer 1

To determine the molar mass of KAlSi2O6, we need to sum up the atomic masses of all the atoms in the chemical formula.

The chemical formula KAlSi2O6 represents a mineral known as orthoclase feldspar, which is composed of potassium (K), aluminum (Al), silicon (Si), and oxygen (O).

Let's calculate the molar mass step by step:

1. Potassium (K) has an atomic mass of approximately 39.10 g/mol.
2. Aluminum (Al) has an atomic mass of approximately 26.98 g/mol.
3. Silicon (Si) has an atomic mass of approximately 28.09 g/mol.
4. Oxygen (O) has an atomic mass of approximately 16.00 g/mol.

Now, we can calculate the molar mass of KAlSi2O6:

Molar mass of KAlSi2O6 = (Molar mass of K) + (Molar mass of Al) + 2 × (Molar mass of Si) + 6 × (Molar mass of O)

= (39.10 g/mol) + (26.98 g/mol) + 2 × (28.09 g/mol) + 6 × (16.00 g/mol)

= 94.20 g/mol + 28.09 g/mol + 112.00 g/mol + 96.00 g/mol

= 330.29 g/mol

Therefore, the molar mass of KAlSi2O6 is approximately 330.29 g/mol.