Explain how the diphosphate ion, [o3p−o−po3]4−, can function as a water softener that prevents the precipitation of fe2+ as an insoluble iron salt.

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

One does not belong why? ice, gold ,wood ,diamond and table salt

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.