The oxidation of ethylene to produce ethylene oxide proceeds according to the equation2C 2H 4 +O 2 ! 2C 2H 4OThe feed to a reactor contains 100 kmol C 2H 4 and 100 kmol O 2. If the reaction proceeds to completion, how much of the excess reactant will be left; how much C 2H 4O will be formed; and what is the extent of reaction?

Long-term space missions require reclamation of the oxygen in the carbon dioxide exhaled by the crew. In one method of reclamation, 1.00 mol of carbon dioxide produces 1.00 mol of oxygen, with 1.00 mol of methane as a by-product. The methane is stored in a tank under pressure and is available to control the attitude of the spacecraft by controlled venting. A single astronaut exhales 1.03 kg of carbon dioxide each day. If the methane generated in the recycling of three astronauts' respiration during one week of flight is stored in an originally empty 140-L tank at −45.0°C, what is the final pressure in the tank?

1. In a 100mL sealed flask, 0.1 g of H2 gas reacts with 0.15 g of N2 gas to generate NH3 gas at 25 oC . Note: Consider that i) the initial and final temperatures are 25 oC; ii) all of the limiting reagent is converted to NH3; and iii) the gases behave as ideal. a) Balance the chemical equation :N2(g) + H2(g) ---> NH3(g) b) Calculate the initial pressure inside the flask (before N2 and H2 react). Calculate the initial partial pressures of N2 and H2 (before N2 and H2 react)  c) Calculate the final pressure inside the flask (after N2 and H2 react to generate NH3). Calculate the final partial pressures for N2, H2 and NH3 (after N2 and H2 react to generate NH3).

To How much propane (in grams) would have to be combusted to increase the temperature 300mL of water from 20° - 100%c The A H comb for 2. In a calorimeter, 250mL of 0.180 mol/L barium chloride 15 150mL of 0.200m01 / L mixed with solfate. The following reaction сад) BqC1₂ (aq) + Na ₂50 4 Propane is -2219.21g/mol. The intial temperature of the two solutions After mixing, the final temperature is that a) Calculate the occors Kj/mol of Naci. the solution has the density and specific heat capacity. equal to that of water CC = 4.184 J/g °c) is 20.00°C 20.49°C. Remember to assume Sodium molar enthalpy of reaction in b) will this reaction feel warm touch. or cold to the