What is the outermost (highest-energy) shell of an element that contains electrons?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?