Question

How many moles of sulfur are in 80 grams of sulfur?

A. 1.5 moles
B. 2.5 moles
C. 1 mole
D. 2 moles

Answer 1

2.5 moles

Step-by-step explanation:

Number of moles = MassMolar mass

= 80⋅g32.06⋅g⋅mol−1 = ??mol

Note that sulfur likely exists in its elemental state as S8. I am perfectly justified in treating sulfur as S. The number of sulfur atoms is the same in each case.