how many moles are there in 100 g of sulfur dioxide?
To determine the number of moles in 100 g of sulfur dioxide, we need to use the molar mass of sulfur dioxide (SO2). The molar mass of sulfur (S) is 32.06 g/mol, and the molar mass of oxygen (O) is 16.00 g/mol.
Since sulfur dioxide (SO2) consists of one sulfur atom and two oxygen atoms, we can calculate its molar mass as follows:
(1 × S) + (2 × O) = (1 × 32.06 g/mol) + (2 × 16.00 g/mol) = 64.06 g/mol
Now, we can use the molar mass to calculate the number of moles in 100 g of sulfur dioxide:
Number of moles = Mass / Molar mass
Number of moles = 100 g / 64.06 g/mol
Number of moles ≈ 1.560 mol
Therefore, there are approximately 1.560 moles in 100 g of sulfur dioxide.
To determine the number of moles in a given mass of a substance, you need to use its molar mass. In the case of sulfur dioxide (SO2), you can calculate the molar mass by adding up the atomic masses of sulfur (S) and oxygen (O).
The atomic mass of sulfur (S) is approximately 32.07 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol. Since there are two oxygen atoms in sulfur dioxide, you need to multiply the atomic mass of oxygen by 2.
Molar mass of sulfur dioxide (SO2) = (atomic mass of sulfur) + (2 * atomic mass of oxygen)
= 32.07 g/mol + (2 * 16.00 g/mol)
= 32.07 g/mol + 32.00 g/mol
= 64.07 g/mol
Now, to calculate the number of moles in 100 g of sulfur dioxide, you divide the given mass by the molar mass:
Number of moles = Mass of substance / Molar mass
= 100 g / 64.07 g/mol
≈ 1.56 moles
Therefore, there are approximately 1.56 moles in 100 g of sulfur dioxide.