A 4.00 sample of gas at 298k and 2.00 atm contains 0.250 mol of gas. If we add another 0.250 mol of gas at the same pressure and temperature, what is the final total volume of gas?

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.