To find the mass percent of sulfur in compound [tex]\( A \)[/tex], follow these steps:
1. Identify the given values:
- Total mass of compound [tex]\( A \)[/tex] = 80.0 grams
- Mass of sulfur in compound [tex]\( A \)[/tex] = 32.0 grams
2. Write down the formula for the mass percent of sulfur:
[tex]\[
\text{Mass percent of sulfur} = \left( \frac{\text{Mass of sulfur}}{\text{Total mass of the compound}} \right) \times 100
\][/tex]
3. Substitute the given values into the formula:
[tex]\[
\text{Mass percent of sulfur} = \left( \frac{32.0 \text{ grams}}{80.0 \text{ grams}} \right) \times 100
\][/tex]
4. Perform the division:
[tex]\[
\frac{32.0}{80.0} = 0.4
\][/tex]
5. Multiply by 100 to convert the fraction to a percentage:
[tex]\[
0.4 \times 100 = 40.0
\][/tex]
Therefore, the mass percent of sulfur in compound [tex]\( A \)[/tex] is [tex]\(\boxed{40.0 \% }\)[/tex].
