Experiments with cathode rays being deflected by a magnetic field show that cathode rays are composed of particles that are
positively charged or negatively charged

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

What is the temperature of one mole of helium gas at stp?

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral