Final answer:
The percent by mass of sulfur in calcium sulfide is 44.5%.
Step-by-step explanation:
To calculate the percent by mass of sulfur in calcium sulfide, we need to find the mass of sulfur in the compound. Since we know the mass of calcium and the total mass of the compound, we can subtract the mass of calcium from the total mass to find the mass of sulfur.
The mass of sulfur can be calculated as:
mass of sulfur = total mass of compound - mass of calcium
= 6.00 g - 3.33 g
= 2.67 g.
Now, we can calculate the percent by mass of sulfur in the compound using the formula:
percent by mass of sulfur = (mass of sulfur / total mass of compound) x 100%
= (2.67 g / 6.00 g) x 100%
= 44.5%.