A balloon contains 12.1 L of helium gas at STP. What is the mass in grams of He in the balloon?

If you want to create an electrical current, which situation would produce a solution capable of this

Calcium chloride +gold(1) oxide—>

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.