A sample of 0.3207 g of an ionic compound containing the bromide ion (Br) is dissolved in water and treated with an excess of AgNO3. If the mass of the AgBr precipitate that forms is 0.6977 g, what is the
percent by mass of Br in the original compound?

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.