QUESTION 4-) since the vapor pressure of solid uranium hexafluoride is given as temperatu lependence In (p/Pa) = -5893.5/T +29.411. , find the enthalpy of sublimation and the vapor ressure at 200k. wwwp w w H=48999 Jmol1 p=0.945 Pa
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- 10.11/ A 1.5-kg specimen of a 90 wt% Pb-10 wt% Sn alloy is heated to 250°C (480°F), at which temperature it is entirely an a-phase solid solution . The alloy is to be melted to the extent that 50% of the speci- men is liquid, the remainder being the a phase. This may be accomplished either by heating the alloy or changing its composi- tion while holding the temperature con- stant. (a) To what temperature must the speci- men be heated? (b) How much tin must be added to the 1.5-kg specimen at 250°C to achieve this state? 10.15) A magnesium-lead alloy of mass 5.5 ka consists of a solid a phase that has a compo- sition that is just slightly below the solubility limit at 200°C (390°F). (a) What mass of lead is in the alloy? (b) If the alloy is heated to 350°C (660°F). how much more lead may be dissolved in the a phase without exceeding the solubility limit of this phase? 10.27 A hypothetical A-B alloy of composition 55 wt% B-45 wt% A at some temperature is found to consist of mass…Boyle’s law for confined gases states that if the temperature is constant, pv = c, where p ispressure, v is volume, and c is a constant. At a certain instant the volume is 75 cubic inches, thepressure is 30 psi, and the pressure is decreasing at the rate of 2 psi every minute. What is therate of change of the volume at that instant?Ethanol vapours were allowed to completely fill a jug with a volume of 18.9L. The ethanol was burned yielding 9.6mL of LIQUID water in the bottom of the jug. C2H5OH + 3 O2 ---> 2 CO2 + 3H20 If the room temperatue was 23.5 degrees Celsius and the pressure was 97.5 KpA, calculate the percentage yield of the water gathered in the jug. Select the final answer from the options below: - Not enough information - 76% - 24% - 17%
- Referring to the Al-Si Eutectic diagram discussed on the Phase Diagrams-Lever Rule handout, calculate the mass fraction of the phase, silicon, given a sample with 51.7 wt% aluminum at 576.99 ˚C.Question: For particles having a size range of 1.27 x 10^2 mm to 5.08 x 10^-2 mm. Calculate the size range of the various fractions obtained using free settling conditions. Also calculate the value of the largest Reynolds number occuring.A gaseous mixture contains the following (%n/n is percent by mole): 15%n/n O₂, 23%n/n N₂, 4%n/n CH₄, 25%n/n C₂H₆, 6%n/n C₃H₈. The last component not mentioned is butane, C₄H₁₀. Determine the %v/v (percent by volume) of butane in the mixture.
- https://www.youtube.com/watch?v=GpRqht0o4w4Normality of 20% (w/v) of H2SO4 isThe sublimation point of CO2 (solid) at 1 atm is -78.37oC and the enthalpy of sublimation(solid to vapor) is 3116 joule/mole. cp (CO2(solid))=50 joule/mole.K. and for cp CO2(g) lookat Appendix.5 gram CO2 gasis held at T=300/X oK in container for some times as represented below:CO2 (gas) at ToK ==➔Dry Ice (Solid CO2) at ToKCalculate:a) The enthalpy of deposition at ToKb) The entropy of deposition at ToK.c) The entropy change of surroundings at ToK. Assume surroundings behavereversibly. Surrounding temperature is ToKd) Entropy change and entropy produced of universe.e) Is this deposition process spontaneous? prove! At given temperature T. x=4.5
- An Ostwald viscometer was used to determine the time of flow of syrup at 20 °C. Data for Water:Time of flow: 0.23 secondsDensity at 20 °C: 0.998 g/cm³Viscosity: 0.0101 poiseData for Syrup:Time of flow: 1.42 secondsDensity at 20 °C: 1.153 g/cm³ Input all numerical answers to the 3rd decimal place 1. What is the viscosity of syrup? * 2. From the computed viscosity of syrup, what will be its fluidity? 3. What is the kinematic viscosity of water? 4. From the computed viscosity of syrup, what will be its kinematic viscosity? 5. What is the fluidity of water?A steam of gas at 70oF, 14.3 psia and 50% saturated water vapor is passes through a drying tower where 90% of the water vapor is removed. Calculate the pounds of water removed per 1000 ft3 of entering gas. The vapor pressure of water at 70oF is 0.74 in Hg.Polycarbonate, PC, is used for aircraft canopies. A batch of this polymer was found to fail prematurely when impacted by a 4 pound bird during qualification studies. You suspect that the problem is due to a molecular weight difference for this particular batch of polymer compared to previous batches. You decide to perform dilute solution viscosity studies to determine the Mol.wt. Assume density is 1.2g/cm3 What solvent would you use? Justify your answer Please answer very soon will give rating surely