Calculate the percent error of the student’s experimental result. ?

A hydrated compound contains water molecules within its crystal structure. The percent composition by mass of water in the hydrated compound CaSO4 • 2H2O has an accepted value of 20.9%. A student did an experiment and determined that the percent composition by mass of water in CaSO4•2H2O was 21.4%. Calculate the... show more A hydrated compound contains water molecules within its crystal structure. The percent composition by mass of water in the hydrated compound CaSO4 • 2H2O has an accepted value of 20.9%. A student did an experiment and determined that the percent composition by mass of water in CaSO4•2H2O was 21.4%.

Calculate the percent error of the student’s experimental result.
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