What is the volume occupied by 0.255 mol of helium gas at 1.31 atm and 301 K?

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.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

50 points - answer entirely - will reward brainliest