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- Calculate △U and △H for the transformation of one mole of a ideal gas from 27°C and 1atm to 327°C and 17atm. Cp=(20.9 + 0.042T) J/Kmol. Provide the given, asked, formula/s to be used and solution.A fuel has the following volumetric analysis: CH4 = 68% C2H6 = 32% Assume complete combustion with 15% excess aur at 101.325 kPa and 27 degrees dry bulb temperature. What is the total moles in the products of combustion?just to verify the answer rto 1 is increasing and 2 is increasing>??
- 1. CaCO3(s) <--> CaO(s) + CO2(g) ΔH° = +178 kJ exo or endo - thermic remove mass(CaO) --> shift: __ (increase) P(CO2) shift? __ ... two ways to lose mass(CaCO3)? __________ higher T shift? __ 2. SO2(g) <--> (1/8)S8(s) + O2(g) ΔH° = +297 kJ exo or endo - thermic Δν(gas)= _, (increase)Vtot --> P(gas)_ > on _hs shift? __ (decrease)P(SO2) shift? __ ... two ways to make mass(S8)? ___________ lower T shift? __ 3. C(s) + 2H2(g) <--> CH4(g) ΔH° = –75 kJ exo or endo - thermic Δν(gas) = _, (decrease)Vtot -->P(gas)_ > on _hs shift? __ (increase)P(CH4) shift? __ ...two ways to to lose mass(C)? ___________ higher T shift? __1. A perfect gas undergoes compression at constant temperature, which reduces its volumeby 3.08 dm3. The final pressure and volume of the gas are 6.42 bar and 5.38 dm3, respectively. Calculate the original pressure of the gas in (a) bar, (b) atm. 2. Consider an isothermal column of an ideal gas at 25oC. What must be the molar mass ofthis gas be if the pressure is 0.80 of its ground level value at (a) 10km and (b) 1km ? Please show complete solutions. A 2.50 mole sample of a perfect gas for which Cv,m = 3R/2 (assume constant over T-range) undergoes the following two-step process: (1) from an initial state of the gas described by T = 13 ºC and P = 1.75 x 105 Pa, the gas undergoes an isothermal expansion against a constant pressure of 3.75 x 104 Pa until the volume has doubled. (2) subsequently, the gas is cooled at constant volume. The temperature falls to -24ºC. Calculate q, w, ∆U, and ∆H for each step and for the overall process.
- The growth of the bacterium Zymomonas mobilis in ethanol under aerobic conditions is described by the following global reaction:C2H5OH + a O2 + b NH3 → c C H1.704N0.149O0.408 + d CO2 + e H2Oa) Write the equations for the balance by elements and the balance of electrons.b) determine the coefficients a, b, c, and d knowing that RQ = 0.66c) determine YX/S and YX/O2ammonia (considered to be an ideal gas) initially at 25 C and 1 bar pressure is heated at constant pressure until the volume tripled. Calculate the q per mole, w per mole, delta H, delta U, and delta S, given that CP=25.895 + 32.999 x 10-3 T – 30.46 x 10-7 (T)2 ? (J/K mol)What is the ∆rxnG° (in KJ/mole) for a mole of an ideal gas as pressure changes from 0.1 Pa to 1×10^5 Pa?