Hector pops this balloon, the molecules in the helium gas will rise upwards.
The helium will move upwards and will go to the upper air level of the closed room, this majorly occurs due to the physical difference between helium and air in the density: 0.166 kg/m³ for helium and 1.21 kg/m³ for air which makes helium almost 86% less dense than air.
Gas density can be defined as the mass of the gas occupying a certain volume at specified pressure and temperature, helium is second most light gas after hydrogen
Hector is standing in a closed room with a balloon filled with helium gas when Hector pops this balloon, the molecules in the helium gas will rise upwards.
To learn more about gas density refer here
https://brainly.com/question/25736513
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