To calculate the weight in grams of 1 mole of KNO3 (Potassium Nitrate), you need to know the molar mass of the compound. The molar mass is the sum of the atomic masses of all the atoms in the molecule.
Here’s how you can calculate it:
- Find the atomic masses:
- Potassium (K): 39.10 g/mol
- Nitrogen (N): 14.01 g/mol
- Oxygen (O): 16.00 g/mol
- Calculate the molar mass of KNO3:
- KNO3 has 1 potassium atom, 1 nitrogen atom, and 3 oxygen atoms.
- Molar mass = (1 × 39.10) + (1 × 14.01) + (3 × 16.00)
- Molar mass = 39.10 + 14.01 + 48.00
- Molar mass = 101.11 g/mol
Therefore, the weight of 1 mole of KNO3 is 101.11 grams.