If you have an unknown quantity of gas in moles at a pressure of 3.2 atm, a volume of 18 liters, and a temperature of 325 K, how many moles of gas do you have?

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.