Which one of the following statements about absolute zero is correct?
(a) at absolute zero, the volume of an ideal gas is zero.
(b) at absolute zero, ideal gases freeze to give solids.
(c) at absolute zero, solid and liquid water are at equilibrium.
(d) absolute zero is the lowest temperature so far reached in the laboratory

What is the chemical equation of fire?

How is it possible for someone to put an ear to a wall and hear someone in the next room?     a. sound waves can travel though solids.    b. the waves travel from room to room via air.    c. there must be some air in the wall so the sound can travel through it.    d. sound waves change to electromagnetic waves and then back again.

An is a pure substance that can’t be broken down into simpler substances by chemical or physical means