HXe04 + 6Br+ 3H2O->3Br2+Xe+ 7OH- In the above reaction, the oxidation state of bromine changes from
How many electrons are transferred in the reaction?

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

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6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.