In a double replacement reaction, the ions of two compounds exchange places in an aqueous solution to form two new compounds.

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.

Chemistry worksheet - i am not sure what they are asking for exactly?

37.0 °c = °f (human body normal temperature)