Question:

A sample of an unknown sulfate compound has a mass of 0.100 g. Addition of excess barium chloride solution to the sample forms a

A sample of an unknown sulfate compound has a mass of
0.100 g. Addition of excess barium chloride solution to the
sample forms a barium sulfate precipitate of mass 0.0676
g. What is the mass % of sulfate ion in the unknown
sample?

A sample of an unknown sulfate compound has a mass of 0.100 g. Addition of excess barium chloride solution to the sample forms a barium sulfate precipitate of mass 0.0676 g. What is the mass % of sulfate ion in the unknown sample?