Which atomic theory involves quantum mechanics?

a. the orbital model of the atom

b. the nucleus model of the atom

c. the billiard ball model of the atom

d. the plum pudding model of the atom

We assume it as an ideal gas therefore we can use the ideal gas equation to solve the problem. The ideal gas equation is expressed as PV = nRT. We are given the volume, temperature and pressure. Therefore, we can solve for the amount of the gas in moles.

n = PV / RT
n = 1.00(3L) / (0.08206 atm L/mol K ) 273 K
n = 0.1339 mol