Final answer:
There are 0.00703 moles of sulfur in a 0.225 gram sample, calculated by dividing the mass of sulfur by its molar mass of 32 g/mol.
Step-by-step explanation:
To calculate the number of moles in 0.225g of sulfur, we use the molar mass of sulfur, which is 32 g/mol. By dividing the mass of the sulfur by its molar mass, we obtain the number of moles:
Number of moles = Mass of substance (g) / Molar mass (g/mol)
Number of moles = 0.225 g / 32 g/mol = 0.00703125 mol
So, there are 0.00703 moles of sulfur in a 0.225 gram sample.