State whether the solution is acid or basic A) A solution in which [OH-] is 0.040M
B) A solution in which [OH-] is 1.8x10-'M

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

How much energy is made when a pice of wood burns. how do you know

Explain what happens at the saturation point when adding salt to water at room temperature.