Answer:
To calculate the number of moles in 64.9 grams of SO₂, you need to know the molar mass of SO₂. The molar mass of SO₂ is the sum of the atomic masses of sulfur (S) and two oxygen (O) atoms. The atomic mass of S is 32.06 g/mol and the atomic mass of O is 16.00 g/mol. So, the molar mass of SO₂ is 32.06 + 2 * 16.00 = 64.06 g/mol.
Now that we know the molar mass of SO₂, we can calculate the number of moles in 64.9 grams of SO₂ by dividing the mass by the molar mass: 64.9 g / 64.06 g/mol = 1.01 mol.
So, there are approximately 1.01 moles in 64.9 grams of SO₂.
Step-by-step explanation: