Which molecule is nonpolar due to a symmetrical distribution of charge

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

What type of matter is made of only one kind of atom

Which of the following words describe the reality that the universe looks the same from various perspective