120.0j of energy are added to a sample of air with unknown mass. the sample increases its temperature from 33.2°c to 45.0°c. what is the mass of the air sample? (c=1.0 j/g°c)

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.

List the path of the respiratory system

Why do lunar and solar eclipse not happen every month