What is the relationship between mass, volume, and density? when you change one of those values, why do the others change, too?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two