Dimensional analysis question #3

Question

How many grams of Cu⁺ are present in 4.40 grams of copper(i) acetate?

Answer 1

copper(I) acetate has a molar mass of 122.59 g/mol

Using dimensional analysis to answer the question:

4.40 g CuAc x 1 mol/122.59 g x 1 mole Cu/mole CuAc x 63.55 g Cu/mol Cu = 2.28 g Cu (to 3 significant figures)

 

Using dimensional analysis, note how the units cancel, leaving the units desired, i.e. grams.