Upon analysis of a sample of thorium from a nuclear power plant, a researcher finds two isotopes: thorium-231 and thorium-234. The heavier of the two isotopes is more abundant, comprising three-fourths of the sample. Based on this information, can you conclude that this sample is typical of naturally occurring thorium?

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.