Solve the below problem:
Q: Weighing of masses gives a mixture at 80 F, 35 lbf/in 2 with 1 lbm O2, 3 lbm N2 and 1 lbm CH4. Find the partial pressures of each component, the mixture specific volume (mass basis), mixture molecular weight and the total volume. You must solve the problem step wise step.You should include all the units which are needed to accomplish the problem.