If you have five 3Ω light bulbs in a series circuit, what is the equivalent resistance of that circuit?

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Name two kinds of practical electric pumps.

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?