What is the ratio of effusion rates of krypton and neon at the same tempurature and pressure

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.

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

I’m an electrically neutral atomic any element, there are equal numbers of