How many formula units are there in 8.31 moles of sodium chloride

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.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

What are the major types of a chemical compound