Final answer:
The mass percent of sulfur in compound B is 0%.
Step-by-step explanation:
To find the mass percent of sulfur in compound B, we need to calculate the mass of sulfur in compound B and divide it by the total mass of compound B, and then multiply by 100%
Mass of sulfur in compound B = Mass of compound B - Mass of oxygen in compound B
Mass of sulfur in compound B = 30.0 g - 30.0 g = 0 g
Total mass of compound B = Mass of sulfur in compound B + Mass of oxygen in compound B = 0 g + 30.0 g = 30.0 g
Mass percent of sulfur in compound B = (0 g / 30.0 g) * 100% = 0%