Answer:
A device designed to transmit electromagnetic waves through the air should be developed.
Polar will always have the higher boiling point because they have strong van der waal forces
The answer is C ionic bonds
Answer:
Hydrogen is collected by downward displacement of water as it is less denser than water. Hence it comes out at the surface of water . It is insoluble in water so it does not dissolve in water
The mass stays the same because if you have the same amount of steam then it can't change. The volume will get slightly smaller because the average kinetic energy of the molecules is less, so they move around less, so they take up less space. The particles are moving less fast.
