What is the oxidized substance in the following reaction?
fe + 2hcl → fecl2 + h2

What is the overall order of reaction for rate = k[no]2[o2]

What is the percent by mass of oxygen in fe2o3

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.