mass of sulfate - 0.2809 g mass of the sample - 0.4213 g Based on the mass of sulfate and mass of the sample, predict the possible identity of the sample assuming that it is a pure anhydrous sulfate salt. Show necessary calculations to justify your answer. HINT: Determine the percentage composition of different sulfate salts and pick the one with the closest % sulfate value.

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Q: . The formula for ibuprofen is C3H1O2. How many moles of ibuprofen are present in 250.0-mg tablet?

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