A gas has a density of 0.25 g/L at a pressure of 0.0821 atm and a temperature of 27°C. What is the molar mass of the gas?

What is an example of a physical property?

What is the polyatamic ion of thiosulfate

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.