100 kg of ch4 630 kg of o2 and 132 kg of n2 are combined to

Question

1. 1.00 kg of CH4, 6.30 kg of O2, and 13.2 kg of N2 are combined to form a gas mixture. Find the molecular mass of the mixture.

2. Ammonia gas is flowing in a tube whose cross-sectional area is 1.00 ft² . The density of the ammonia is 0.100 lbm/ft³ . At some point in the system, CO₂ is added at a rate of 1.00 × 10^-3 lbm/h in a steady flow process. At a point further downstream, a detector indicates that the concentration of CO₂ on a mass basis is 1.00 × 10^-3 %. Determine the inlet velocity of the ammonia.