The sum of two or more vectors is called

The reaction q+r2=r2q is found to be first order in r2 and

How far is the region from the equator or control climate

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.