Radon-222 has a half-life of 3.82 days. How long would it take for 31/32 of a sample of radon-222 to decay?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

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