What is the law of multiple proportions

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.

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

How many neutrons does an element have if its atomic number is 50 and its mass number is 166