The galvanic cell test setup given in the figure is at 25 ° C. It Show the total reaction by writing the anodic and cathodic reactions of the galvanic cell. The potential to be read by the voltmeter connected to the system and the Nernst cell potential calculate.
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The galvanic cell test setup given in the figure is at 25 ° C. It Show the total reaction by writing the anodic and cathodic reactions of the galvanic cell. The potential to be read by the voltmeter connected to the system and the Nernst cell potential calculate.
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- At a constant external pressure of 43.6 bar, a mole of XX reacts via the reaction X(g)+4Y(g)→2Z(g), ΔH∘=−75.0 kJ mol−1X(g)+4Y(g)→2Z(g), ΔH∘=−75.0 kJ mol−1 Before the reaction, the volume of the gaseous mixture was 5.00 LL. After the reaction, the volume was 2.00 LL. Calculate the value of the total energy change, ΔUΔUDelta U, in kJ mol−1 kJ mol−1.A sample of potassium permaganate (KMnO4) reacts to completion with sodium oxalate (Na2C2O4) in the folowing redox reaction: 2MnO4- (aq) + 5C2O4-2 (aq) + 16H+ (aq) --> 10CO2 g) + 2Mn+2 (aq) + 8H2O (l) The volume of carbon dixoide released by the reaction at 297 K and 1.00 atm was 138 L. How many moles of potassium permanganate reacted? The Universal Gas Constant is 0.082057 L x atm/ mol x K. (answer in sig figs)One of the many remarkable enzymes in the human bodyis carbonic anhydrase, which catalyzes the interconversionof carbon dioxide and water with bicarbonate ionand protons. If it were not for this enzyme, the body couldnot rid itself rapidly enough of the CO2 accumulated bycell metabolism. The enzyme catalyzes the dehydration(release to air) of up to 107 CO2 molecules per second.Which components of this description correspond to theterms enzyme, substrate, and turnover number?
- The maximum allowable concentration of H2S(g) in air is 20mg per kilogram of air (20 ppm by mass). How many gramsof FeS would be required to react with hydrochloric acidto produce this concentration at 1.00 atm and 25 °C in anaverage room measuring 12 ft x 20 ft x 8 ft? (Under theseconditions, the average molar mass of air is 29.0 g/mol.)hello, i sent this question before but the answer you rpovided for both wasnt right and i couldnt undertstand how you got the answer. can you please show me a handwritten solution for better understanding. 1a) The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C2H5OH(g) CH3CHO(g) + H2(g) was studied by monitoring the total pressure with time.The following data were obtained: t (s) Ptotal (torr) 0 120 45 131 139 154 233 177 376 212 380 213 What will be the total pressure at t = 462 s? 1b) What is the rate constant (k)?(Include appropriate units.)Suppose that something had gone wrong in the Big Bang, and instead of ord inary hydrogen there was an abundance of deuterium in the universe . There would be many subtle changes in equilibria, particularly the deuteron transfer equilibria of heavy atoms and bases. The Kw for D2O, heavy water, at 25 °C is 1.35 x 10-15. (a) Write the chemical equation for the autoprotolysis (more precisely, autodeuterolysis) of D2O. (b) Evaluate pKw for D2O at 25 ° C. (c) Calculate the molar concentrations of D3O+ and OD- in neutral heavy water at 25 °C . (d) Evaluate the pD and pOD of neutral heavy water at 25 °C. (e) Formulate the relation between pD, pOD, andpKw(D2O).
- PV = nRT. The pressure is 0.9912atm. V = 50.5 mL. T = 21.5°C and n = 0.00200mol. Calculate R from this data in Latm/molK.The atomic hydrogen exists in space at an estimated concentration of one particle per cubic meter. If the collision diameter is 2.5 ×10^(–10) meter and the temperature is 2.7 Kelvin, how many kilometers away will the next potential collision be? Express the answer in three significant figures.The global emissions of methane have been estimated to be near 9,390 million metric tons of CO2 equivalent, assuming there is a GWP of 25. Calculate the residence of methane in the atmosphere. If the concentration of methane in the atmosphere is 1.55 ppmv. Can an expert, please show me how to solve the question above?
- Potassium dichromate has several industrial applications. To determine the purity of the salt that will be used in different industrial processes, a sample mass equal to 2.660 g was dissolved and quantitatively transferred to a 500.00 mL flask. An aliquot of 25.00 mL of this solution was treated with excess KI and the released iodine was titrated with 0.1000 mol L-1 sodium thiosulfate, spending 27.00 mL. Calculate the purity of the analyzed salt. Data:K = 39.10 O = 16.00 Cr = 52.00 I = 126.9 S = 32.07For the reduction 2FeCl3 + SnCl2 =====➔ 2 FeCl2 + SnCl4 in aqueous solution the following data were obtained at 25oC t(min) 1 3 7 11 40 Y 0.01434 0.02664 0.03612 0.04102 0.05058 Where y is the amount of FeCl3 reacted in moles per liter. The initial concentrations of SnCl3 and FeCl3 were respectively, 0.03125, 0.0625 moles/L. a.)Show that the reaction is third order (derive the rate law), and b.) calculate the average specific rate constant.I AM NOT A NATIVE ENGLISH SPEAKER, PLS WRITE IT CLEAR. The following is a formulation of the decomposition of penta-nitrogen dioxide in 456K N2O5(g) → 2NO2(g) +1\2O2(g) ? = 6.35 × 10−3?−1 A 0.18 liter hard vessel located in the 456K was inserted N2O5(G) At a pressure of 1.22 atmospheres. the reaction above happend. 1. How long from the start of the experiment will the pressure in the system rise to 1.54 atmospheres? 2. Calculate the partial pressure of each component in the mixture 100 seconds from the start of the experiment. 3. It was found that at a temperature of K 400 the value of the rate constant for a decomposition reaction of a nitrogen Fanta-oxygen equals 5.42*10-3 sec-1. Calculate the operating energy for the reaction. in all sections show calculations.
