what are the name for : BeCl2.2H20 and LiNO2. H20

Which of the following statements correctly compares the relative size of an ion to its neutral atom?

Why are roman numerals used in naming compounds that contain transition metals?

How much of one gram of radium-226 will remain unchanged after four half-lives?

A ball-and-stick model of a molecule provides much the same information as a

a sample of 3.0 mols of hydrogren gas has a volume of 75ML. 1.5 mols of hydrogen is added if the pressure and temperature remains constant, calculate the final volume of the gas?

How much greater is the energy produced by a fusion reaction compared to a chemical reaction?

True or false. A bond between a metal atom and a nonmetal atom is likely an iconic bond

What is a precipitate? It is a liquid that forms from solution during a chemical reaction. It is a reactant that forms from solution during a chemical reaction. It is a solid that forms from solution during a chemical reaction.

The electron configuration for an atom is 1s22s22p2. How many electrons does the atom have? 4 2 6 5

When a piece of sodium carbonate reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then the solution turns milky and a white precipitate Y is formed a. Write the chemical formula of X, Y and (3) b.