A 77% excess air at 20 °C mixing with gas fuel containing of 66 mole percentage CH. and C₂H6. Air and fuel enters a furnace with and completely burning. If 450000 kJ/kmol gas fuel is transferred as heat to boiler, what temperature does the burned gas exit the furnace?
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- A mixture of 1 kmol of gaseous methane and 2 kmol of oxygen initially at 258C and 1 atm burns completelyin a closed, rigid container. Heat transfer occurs until the products are cooled to 900 K. If the reactants andproducts each form ideal gas mixtures, determine (a) the amount of heat transfer, in kJ, and (b) the finalpressure, in atm.A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns then into gaseaous products. the cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. the cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to release 173.kJ of energy. the temperature of the water bath is monitored, and it is determined from this data that 37.2kJ of heat flows out of the system during the reaction. Is the reaction exothermic or endothermic? Does the temperature of the water bath go up or down? Does the piston move in or out? Does the gas mixture do work, or is work done on it? How much work is done on (or by) the gas mixture? Round your answer to 3 significant digits.A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 4.70 kg of water at 37.5C. During the reaction 92.8kJ of heat flows out of the flask and into the bath. Calculate the new temperature of the water bath. Heat capacity of water is 4.18J.g-1.K-1. Round your answer to 3
- The sun supplies about 1 kilowatt(s) of energy for each square meter of surface area (1 kW/m2kW/m2, where a watt = 1 J/sJ/s). Plants produce the equivalent of about 0.19 gg of sucrose (C12H22O11C12H22O11) per hour per square meter.One hundred mole NH3/s and 200 mole O2/s at 25 degrees C are fed into a reactor in which the ammonia is completely consumed. The product gas emerges at 300 degreesC. Calculate the rate at which heat must be transferred to or from thereactor, assuming operation at approximately 1 atm. The standard heat ofreaction for the oxidation of ammonia is given below: NH3 (g) + 5O2 (g) → 4NO(g) + 6H2O(v); ΔHr^0= -904.7KJ(ΔHr^0-904.76KJ/s)Q1) A constant volume tank contain 1 mole ofC7H14and 12 mole of O2 gas at a temperature of 25 °C and 1 bar. The contents of the tank is ignited and C7H14 is burned completely and final products temperature is found to be 1700 K. Determine the heat transfer during this process. ( take daltaHo = -47800 kJ/kg).
- In constant pressure calorimeter 75.0 ml is mixed with 1.25 M Hydrocloric acid solution is mixed with 75.0 ml of 1.25 M Sodium hydroxide solution. the density of the final solution is 1.00g/ml and the the solution both initially 21.45c, reach a maximum temperature of 28.32c when mixed. based on this information, and estimating the solution's heat capacity as 4.18Jg-1c-1, what is the amount of heat in Kilojoules, transferred in this reaction?In rigid vessel, 19.4 moles of substance at 26.5 C is heated to 95.4C. Cv = 30.95 J/mol CCp = 33.7 J/mol C if the vessel weighs 253 kg and has a heat capacity of 627 j/kg C, how much heat is required?A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) The temperature of the water bath is monitored, and it is determined from this data that 252. kJ of heat flows out of the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the piston does 337. kJ of work on the system during the reaction.
- A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of the 1 atm. The cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to absord 105. kj of energy. The position of the piston is monitored, and it is determined from this data that the piston does 255. kj of work on the system during the reaction. Is the reaction exothermic or endothermic? (exothermic or endothermic) Does the temperature of the water bath go up or down? (up, down, neither) Does the piston move in or out? (in, out, neither) Does heat flow into or out of the gas mixture? (in, out, neither) How much heat flows? Round your answer to 3 significant digits.Given that AgNO3 is -124.4 kJ/mol, at standard conditions, find the dH when 56g of AgNO3 (M = 169.9 g/mol) reacts. If the heat involved (derived from answer a) is transferred without loss to 100.0g of water at 25ºC. what is the final temperature of the water (CH2O = 4.18J/gºC)?A gaseous fuel mixture contains 23.4 %% methane (CH4)(CH4), 40.1 %% ethane (C2H6)(C2H6), and the rest propane (C3H8)(C3H8) by volume. Part A When the fuel mixture contained in a 1.51 LL tank, stored at 746 TorrTorr and 298 KK, undergoes complete combustion, how much heat is emitted? (Assume that the water produced by the combustion is in the gaseous state.) Standard Enthalpies (or Heats) of Formation (ΔfH∘ΔfH∘) at 298 KK Formula ΔfH∘kJmol−1ΔfH∘kJmol−1 CH4(g)CH4(g) −−74.6 C2H6(g)C2H6(g) −−84.68 C3H8(g)C3H8(g) −−103.85 O2(g)O2(g) 0.0 CO2(g)CO2(g) −−393.5 H2O(g)H2O(g) −−241.8 Express your answer to three significant figures and include the appropriate units.