Suppose the price of electricity is 12.75 cents per kWºh. What
difference in cost in dollars between the use of an incandescent buio
2,000 hours and an LED bulb for the same amount of time?

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?