posted by Hannah .
Mass of aluminum sample = 0.97g
Mass of watch glass = 32.1851g
Mass of watch glass & sample = 45.2550g
a) What is the mass of alum produced?
b) What is the theoretical yield of alum?
c) What is the percent yield?
d) What is the molecular mass of alum?
You didn't provide enough information to answer. When you re-post explain what you don't understand about the problem.