What is the reactant of 2Fe2O3 = 4Fe + 3O2

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

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.

Can someone me with 6 to 10 plz this is for masteries test.