Which of the following could fom an ionic bond with an anion? O Hg2+
O NO
O so,2-
O Ar

What is the relation between concentration of reactants and the rate of chemical reaction?

Why is the melting of ice a physical change ?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.