The number of valence electrons in an atom can often be quickly determined by referencing a. the atomic mass of the element. b. the period number on the periodic table. c. the atomic number of the element. d. the group number on the periodic table.

What does x represent in the formula for the compound xcl4?

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.