Plz help! Everything below!

(Brainliest and points)

Which best describes why nh4+ can form an ionic bond with ci-?

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.

What’s the theoretical yield of solid lead