How many elements are in H
a) 3
b) 2
c) 1
d) 5

Noble gases are the most reactive elements on the periodic table. a. true b. false

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

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.