Use this observed pattern to predict the number of energy levels in a neutral atom:
rb - rubidium (atomic number 37)
cs - cesium (atomic number 55)
fr - francium (atomic number 87)
ni - nickel (atomic number 28)
hg - mercury (atomic number 80)
kr - krypton (atomic number 36)

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage