Which of the following is an example of a physical change? a) ice melting b) rust on a nail c) both d) neither

How manyatoms of mercury are in 1.4214e+1 ml sample

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.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same