How many moles of FeS are produced from 25.5 grams of iron, Fe? (Use the following equation, 8Fe + S8 -> 8FeS)

Explanation for basic character?

How many miles of water are produced if 5.43 mol pbo2 are consumed

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?