Formation of SO3 from SO2 and O2 is favoured by a) increase in pressure
b) decrease in pressure
c) Increase in temperature
d)decrease in temperature​

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 type of matter is made of only one kind of atom

Displacement is the slope of a velocity vs. time graph a. true b. false