Answer:
Percentage of S = 72.3%
Percentage of C = 27.7%
Step-by-step explanation:
Given data:
Mass of carbon = 20.8 g
Mass of sulfur = 54.4 g
Percent composition = ?
Solution:
First of all we will calculate the total mass of compound.
Total mass = mass of carbon + mass of sulfur
Total mass = 20.8 g + 54.4 g
Total mass = 75.2 g
Percentage of carbon:
Percentage of C = mass of carbon / total mass × 100
Percentage of C = 20.8 g/ 75.2 g × 100
Percentage of C = 27.7%
Percentage of Sulfur:
Percentage of S = mass of carbon / total mass × 100
Percentage of S = 54.4 g/ 75.2 g × 100
Percentage of S = 72.3%
Total = 72.3% + 27.7% = 100% (so answer is correct)