- #1
Sace Ver
- 79
- 2
Homework Statement
Determine the mass of all the sulphur atoms in 71g of Na2SO4?
Homework Equations
Not sure
The Attempt at a Solution
Do I divide 71 by 7 because 2+1+4=7?
And then would I multiply 1 by the number I get?
Sace Ver said:Homework Statement
Determine the mass of all the sulphur atoms in 71g of Na2SO4?
Homework Equations
Not sure
The Attempt at a Solution
Do I divide 71 by 7 because 2+1+4=7?
Would it be 16g of sulphur?MexChemE said:There are 32 grams of sulfur in a mole of Na2SO4. Calculate the molar mass of sodium sulfate and then use a simple rule of three to calculate what you need.
MexChemE was correct in that you need to calculate the molar mass of Na2SO4 in order to find the mass of S contained in 71 g of the original substance.Sace Ver said:Would it be 16g of sulphur?
Oh, sorry. I meant this.SteamKing said:This 'Rule of Three' which was mentioned is not at all clear.
To calculate the mass of sulphur, you will need to know the mass of the entire sample and the percentage of sulphur present in the sample. Multiply the mass of the sample by the percentage of sulphur to get the mass of sulphur in the sample.
The formula for calculating the mass of sulphur is: Mass of Sulphur = Mass of Sample x Percentage of Sulphur
Yes, the mass of sulphur can be calculated using a chemical formula. You will need to know the molar mass of sulphur and the number of moles of sulphur present in the sample, which can be determined from the chemical formula.
To determine the percentage of sulphur in a sample, you will need to know the mass of sulphur and the mass of the entire sample. Divide the mass of sulphur by the mass of the sample and multiply by 100 to get the percentage of sulphur.
The mass of sulphur is typically expressed in grams (g) or kilograms (kg). In some cases, it may also be expressed in other units such as milligrams (mg) or pounds (lb).