Acontainer is filled with a mixture of helium (light molecules) and oxygen (heavy molecules) gases. a thermometer in the reads 22°c. which gas molecules have the greater average speed

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

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.

Adepositional also feature that forms where a stream enters a lake or an ocean is a