The goodyear blimps, which frequently fly over sporting events, hold approximately 1.65_105ft3 of helium.

if the gas is at 24_c and 1.0 atm, what mass of helium is in the blimp?

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.