2.01 g of sodium sulfate
How would I figure out the number of moles of sulfure atoms in that sample?
whoops, made a typo. It's sulfur, not sulfure.
Sodium sulfate is Na2SO4.
1 mol Na2SO4 contains 1 mol S.
1 mol Na2SO4 has a mass of 142.04 g.
Convert 2.01 g Na2SO4 to mols and since 1 mol Na2SO4 contains 1 mol S, that will be the mols of S, also.
2.01 x (1 mol Na2SO4/142.04 g Na2SO4) x (1 mol S/1 mol Na2SO4) = ?? mols S in 2.01 g Na2SO4. Note how the units you don't want to keep cancel and the unit you want (mols S in this case) don't cancel. Check my work.
awesome! thanks for the help!
14.2g of sodium sulphate
To determine the number of moles of sulfur atoms in a sample of sodium sulfate (Na2SO4), you need to use the molar mass and stoichiometry of the compound.
1. Start by finding the molar mass of sodium sulfate:
- Sodium (Na) has a molar mass of 22.99 g/mol.
- Sulfur (S) has a molar mass of 32.06 g/mol.
- Oxygen (O) has a molar mass of 16.00 g/mol.
The molar mass of sodium sulfate (Na2SO4) is:
2(22.99 g/mol) + 32.06 g/mol + 4(16.00 g/mol) = 142.04 g/mol.
2. Now, you have the molar mass of sodium sulfate, which is 142.04 g/mol. Next, you need to calculate the number of moles of sodium sulfate using the given mass.
Divide the mass of the sample by the molar mass:
Number of moles = Mass / Molar mass
Number of moles = 2.01 g / 142.04 g/mol.
Using a calculator or performing the calculation, you find that the number of moles of sodium sulfate is approximately 0.01416 mol.
3. Finally, to find the number of moles of sulfur atoms, you can use the stoichiometry of the compound. In one molecule of sodium sulfate, there is one sulfur atom. Therefore, the number of moles of sulfur atoms is the same as the number of moles of sodium sulfate, which is 0.01416 mol.
So, the number of moles of sulfur atoms in 2.01 g of sodium sulfate is approximately 0.01416 mol.