H2 + 02 > H20 for which the equilibrium constant K = 627 at 150 C. Suppose 0.515 mol of H2 and 0.350 mol of 02 were placed in a 2-liter vessel at 80 C. What will the concentrations of all species be once equilibrium is established?
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- Vo [S] S1 S2 0.0001 33 17 0.0002 50 29 0.0005 71 50 0.001 83 67 0.002 91 80 0.005 96 91 0.01 98 95 0.02 99 98 0.05 100 100 5.0 100 100 Which of the following is a correct conclusion from this data? A) the Km for both Si and S2 is 100 B) the Km for both Si and S2 is 50 C) the Km for both S1 and S2 is 5.0 D) the Km for Sı is 0.0002 and for S2 is 0.0005 E) the Km for Sı is 50 and for S2 is 29 Which of the following is a correct conclusion from this data? A) Sı is a better substrate because it has a higher Vmax B) S2 is a better substrate because it has a higher Vmax Si is a better substrate because it has a lower Km D) Si is a better substrate because it has a higher Km E) None of the above In plots of 1/V vs. 1/[S], the Y-intercept (i.e. the value of Y when X = 0) is S2. for both Sı and A) 5 B) 1/5 C) 100 D) 1/100 E) None of these140 120 Super- critical A 100 fluid CO,(s) Co,(1) 80 Critical point 30.98°C, 60 72.79 atm 40 В 20 CO>(g) Triple point - 56.57°C, 5.11 atm -80 -60 -40 - 20 20 40 Temperature (C) Above is the phase diagram of CO2. What is the slope (in atm K1) of the line BC at 0°C? The Enthalpy of vaporization of CO2 is 15.326 kJ mol1. The density of CO2(1) and CO2(g) are 927 g/L and 1.977g/L, respectively. Pressure (atm)What mass of Co(s) may be deposited from an aqueous CoCl, solution if a current of 2.50 A is applied to the solution for 365 s? (e*rea(Co2*/Co) = -0.277 V, F = 96485 Cimol) 0.557 g 0.279 g O 1.01 g O 1.11 g 0.0772 g
- You wish to determine the %concentration of a stock solution of brilliant blue FCF (MW=792.8grams/mole; extinction coefficient,25=97000M1cm 1). You take 5ul of the stock and dilute up to 1ml. You take 10ul of this dilution an dilute it up to 500ul. Finally you take 1ul from this dilution and dilute it up to 1ml in a 1cm diameter cuvette. You obtain an As91=0.001 SHOW YOUR WORK. Do not forget units. 1. What is your total dilution factor? 2. What is the molar concentration of the dye in the original stock? 3. What is the % concentration of the dye in the original stock?The atmospheric ratio of peroxyacetic nitric anhydride (PAN) to PAN + inorganic nitrite varies from less than 0.1 to 0.9. High values of the ratio are associated with photo chemically aged air masses, situations where precipitation has recently occurred, and situations were unusually high nighttime nitrogen oxide concentrations are found. What do these observations tell us  about the factors affecting the relative rates of formation and removal of nitrogen oxide compounds?A team of investigators is out on a boat on a lake on a marvelous,sunny summer day, and they are taking water samples fromvarious depths in the lake so as to construct a plot of dissolvedO2 concentration versus depth, similar to the plot in Figure 1.16.When the investigators bring up a water sample from a depthof 20 m, why is it imperative that they measure its dissolved O2concentration immediately, rather than letting it sit on the deckfor 5 minutes? (Hint: Look at Figure 22.2A.
- Chloroform is a volatile (readily changes from liquid phase to gaseous phase) once commonly used in the laboratory but now being phased out due to its ozone depletion potential. If the pressure of gaseous chloroform in a flask is 195 Torr at 25°C and its mass for 1 liter of gas is 1.25 g, what is the molar mass (g/mol) of chloroform? O None of these O 119 g/mol 10.0 g/mol O 76.3 g/molHow many liters of dry hydrogen gas, measured at 798 mmHg and 21C, will be released by the decomposition of 230 mL of H20 at 1.42atm and 30C? 2 H20 (g) → 2 H2 (g) + O2 (g) Answer to 3 decimal places. Your Answer: Answer unitsFind the density of nitrogen (N2) and oxygen (O2) at STP assuming they behave like an ideal gas.
- Why is it necessary to specify the temperaturewhen making a table listing ∆G values?Guanosine (C10H13N5O5) in solution has a maximum absorbance at a wavelength of 275 nm. The molar extinction co-efficient at this wavelength is 84M−1cm−1and the path length is 24.7 cm. Through the use of a spectrophotometer, it is found that the that A275= 1.48. What is the concentration of the guanosine solution in grams/litre? Molecular weights (g/mol): C-12, H-1, N-14, O-16 Select one: A. 0.201869 g/L B. 0.435188 g/L C. 0.059919 g/L D. 0.294046 g/L E. 0.000713 g/LAn adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: Species Inspired Gas (%) Expired Gas (%)O2 20.6 15.1CO2 0.0 3.7N2 77.4 75.0H2O 2.0 6.2The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and 1 atm). Nitrogen is not transported into or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. Calculate the masses of O2, CO2, and H2O transferred from the pulmonary gases to the blood or vice versa (specify which) per minute. 2. Calculate the volume of air exhaled per milliliter inhaled. 3. At what rate (g/min) is this individual losing weight by merely breathing?