Hydrogen sulfide gas is bubbled through excess
potassium hydroxide solution.
h2s + 2oh– → s2– + 2h2o

write the balanced chemical equation excluding spectator ions. how do you get there from
h2s + koh -> k2s + h2o ?

Which type of reaction always has an element and a compound as reactants

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.