A model of calcium atom including the number and position of protons , neutrons and electrons in the atom.

Why can water dissolve many ionic compounds

What two categories of toxins were present in the air at dish, texas as a result of the gas pipelines that pass through the area

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.