If you want to lift a 30-kg box to a height of 1 m, how much work will it take? A. 300 J
B. 147 J
C. 294 J
D. 30 J

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

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.

What is the atomic number of an atom that has 6 protons