A 1.53 mol sample of helium gas was placed in a balloon. Adding 7.00 mol of helium gas to the balloon increased its volume to 12.5 L. Assume that temperature and pressure remained constant. What was the initial volume of the balloon in liters?

They are all full and don't need any more electrons in there outer shell.

What do you mean by that? like the contents? the thc level?

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.