Why air passed through sodium hydroxide solution and silicon dioxide during the industrial preparation of oxygen from air.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

The volume of a single vanadium atom is 9.29×10-24 cm3. what is the volume of a vanadium atom in microliters?

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.