What is the mass of 8.0 x 1025 formula units of sodium chloride?

In which phase(s) do the molecules take the shape of the container?

The element that has the greatest electronegativity is

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.