Which subatomic particle has a positive charge? question 1 options: a .neutron b. electron c. proton d. all particles

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.

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!