Can someone help me with this?

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.