2.15 Atomic and molecular weights of some common substances are listed in Appendix Tables T-1 and T-1E. Using data from the appropriate table, determine   (a) the mass, in kg, of 20 kmol of each of...

2.15
Atomic and molecular weights of some common substances are listed in Appendix Tables T-1 and T-1E. Using data from the appropriate table, determine

(a)
the mass, in kg, of 20 kmol of each of the following: air,C, H2O, CO2.

(b)
the number of lbmol in 50 lb of each of the following: H2,N2, NH3, C3H8.