Does earth core have more iron than earths crust?

What is a base? A. A substance that contributes chloride ions to the solution B. A substance that increases the concentration of oxygen in solution C. A substance that increases the concentration of OH ions in solution D O D.

A chemist wants to uncover evidence that when molecules of a gas strike the wall of a container, energy is transferred from the molecules to the wall. Which might provide such evidence?

If an isotope of uranium, uranium-235, has 92 protons, how many protons does the isotope uranium-28 have?

How did mendeleyev improve newlands method

Silver nitrate + cobalt chlorine precipitate worded equation? Dose it matter if I put silver nitrate first or cobalt chlorine first?

The difference between ionic covalent and metallic bonding

As the speed of a particle increases, does its associated wavelenght increase or decrease

The composition of air by volume is approximately 1/5 oxygen, 4/5 nitrogen. When air is passed through red-hot carbon, the following reaction occurs: 2C + O2 (g) 2CO (g).

How many atomic mass units are equal to 1.672*10-24 g of protons?

What is the name of the compound Sr3N2?