Question 3 Normal butanol (C4H100) is diffusing through air at 1 atm absolute pressure. Calculate the diffusivity (DAB) for 15°C & 1.5195x10 pain ma Molecular weights of butanol and air are 74 and 29 lbmy/lbmole, respectively. Appendices Appendices Diffusivity.pdf 18.5 x 10-6 9.03 x 10-6 5.64 x 10-6 7.7 x 10-6 Moving to another question will save this response.