Write a balanced half-reaction for the reduction of aqueous hydrogen peroxide to liquid water in basic aqueous solution. Be sure to add physical state symbols where appropriate.

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.

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

How does climate change cause the ocean's thermohaline current to slow down?