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- A specimen of a 4340 steel alloy having a plane strain fracture toughness of 45 MPa sqrt(m) (41 ksi sqrt(in)) is exposed to a stress of 1000 MPa (145,000 psi). Will this specimen experience fracture if it is known that the largest surface crack is 0.75 mm (0.03 in.) long? Why or why not? Assume that the parameter Y has a value of 1.0.Q4: (A) Below are some data for the adsorption of N; on 1.00 g of TiO, at 75 K. (Assume V corrected to 1 atm and 273 K) For N, at 75 K, take the vapor pressure p 570 torr. Find V and C constant? P(torr) 1.20 1.40 45.8 87.5 127.7 164.4 204.7 V(mL) 601 720 822 935 1046 1146 12543. Find lattice constant and atomic radius of Silver from the X-Ray spectra for Silver nanoparticles given below and compare with appendix (wavelength of incident X-Ray is 0.154 nm ) 40 (111) 35 30 25 20 (200) 15 (311) (220) 10 |(222) 5 10 30 2 Theta 50 70 90 Fig. 3. X-ray diffraction patterns of silver nanoparticles embedded ultra-thin film solar cell.
- ● A ALEKS-Lara AX → с www-awu.aleks.com/alekscgi/x/lsl.exe/10_u-IgNslkr7j8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHIntrzjVfiaJ_cKvcyqWTUEIAKXtcoqhtE9_vix... 4 Solubility and... 18.3 Gibbs Free E... 5.3 Enthalpies of.... 18.5 Gibbs Free E... Reading Schedule 19.6 Reduction Po... C ! 1 Under these conditions, calculate the reaction free energy AG for the following chemical reaction: N₂(g) + 3H₂(g)2NH₂(g) Use the thermodynamic information in the ALEKS Data tab. Round your answer to the nearest kilojoule. ● ENTROPY AND FREE ENERGY Calculating reaction free energy under nonstandard conditions Explanation A T A chemist fills a reaction vessel with 7.76 atm nitrogen (N₂) gas, 7.51 atm hydrogen (H₂) gas, and 0.524 atm ammonia (NH₂) gas at a temperature of 25.0°C N Puppy Jobs, Em x G puppy store ne x Part Time Jobs, x G Food Server and X G 10 out of 25 as x) How Many Hour x CO @ 2 Check W S X R option command #3 X E D 26 $ DS 4 C Ś R LL F % 5 V T tv SH N G MacBook Pro ^ 6 Y B & M 7 19.6 Reduction…Scence Midterm Summ X Material%20Science_Midterm%2 x ewer?url=https://ttu-storage.s3.eu-central-1.amazonaws.com/account 1/attachments/390676/Ma ence Midte 02021.pdf Open with Google Docs 5. Iron has a BCC crystal structure, an atomic radius of 0.124 nm, and an atomic weight of 55.85 g/mol. Compute its theoretical density: 6. Below is a unit cell for a hypothetical metal. (a) To which crystal system does this unit cell belong? 40nm 030 nm 0.30 nm (b) What would this crystal structure be called? 1 1 2 7. Sketch a tetragonal unit cell. and witnin that Page Hocations of the point: DELLRead the excerpts from chemistry journal articles. Determine which section each quote was likely derived from, then label the quote accordingly. "A total of 18 GFRP-SR confined concrete cylinders with a diameter of 150 mm Discussion and a height of 300 mm were constructed and tested under axial compression." "Since Alfred Loomis's studies in the 1920's, ultrasonic waves of various frequencies have found uses in areas such as medical imaging, geological imaging Introduction (SONAR), industrial cleaning and welding, solution mixing, and even jewelry cleaning." %3D "The thermogram of the pure NIA revealed a sharp endothermic signal with maximum Experimental at 204.75 °C, and AH = 30.54 kJ/mol, that corresponds with the melting of the NIA." "As we have demonstrated here that a pulse of blue light 450–475 nm, the simulating wavelength of melanopsins and/or cryptochromes, increases the expression of Per1 Results and Per2, one of these photopigments is most probably responsible for light…
- Carbon is allowed to diffuse through a steel plate 15 mm thick. The concentrations of car- bon at the two faces are 0.65 and 0.30 kg C/m³ Fe, which are maintained constant. If the pre- exponential and activation energy are 6.2 × 10-7 m/s and 80,000 J/mol, respectively, com- pute the temperature at which the diffusion flux is 1.43 × 10-9 kg/m² • s. S.- & Sketch New · C $ 7 ♡ www 1500 kg/m³ O 3000 kg/m³ 5000 kg/m³ 7000 kg/m³ 9000 kg/m³ 44 < HD E Material X has an atomic radius R = 0.125 nm, an atomic weight of A = 51 g/mol, and a body centered cubic (BCC) crystal structure. Calculate the mass density of this material. Hint: Do your calculations in SI units, as this will help avoid numerical errors from unit conversions. Choose the answer closest to your calculated value.kindly help me with this problem Thank you! Subject: Physical Chemistry Instructions: solve as neatly as possible and show complete solution.No rounding-off for your decimals (include all decimals in your calculator in your computation). The following data were obtained for the adsorption of acetone on charcoal from an aqueous solution at 180C. Y (millimoles/g) C (millimoles/liter) 0.208 2.34 0.618 14.65 1.075 41.03 1.5 88.62 2.08 177.69 2.88 268.97 a) Find the constants k and n of the Freundlich equation. b) Find the constants a and b in the Langmuir equation. c) Find the constants k and n in the Temkin isotherm. d) Which of the isotherm fit the data best?
- A first order reflection from the (123) planes of a cubic crystal was observed at an angle of e = 24.8 ° when X-rays of wavelength 154 pm were used. 1 h k? 1? d u? b? na = 2d sin e -= - hki (i) Determine the length of the side of the unit cell.+ Moore 5e_Ch11 SP2020.pptx: SP X * OWLV2 | Online teaching and lea X oping Cart | The UAB Blazer x VtakeAssignment/takeCovalentActivity.do?locator=assignment-take [Review Topica) [References) Use the References to access important values if needed for this question. In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g)% H2(g) + % I(g) the following data were obtained: HI), M 0.401 0.201 0.101 5.05x102 seconds 519 779 910 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.401 M is s and when the starting concentration is 0.201 M is req (2) 2req The average rate of disappearance of HI from t=0 s to t= 519 s is Ms! (3) The average rate of disappearance of HI from t = 519 s to t= 779 s is Ms! (4) Based on these data, the rate constant for this v order reaction is Submit Answer Retry Entire Group 9 more group attempts remaining Cengage Learning | Cengage Technical Support Tch 55 F7…please help me answer my assignment. thanks the rate constants (k) for the leaching of galena in an aqeous medium containing ammonium acetate under oxygen pressure at the different temperature are listed below: log K -10.9 -11.1 -11.2 -11.5 -12.1 -12.6 1/t x10^3 2.30 2.35 2.38 2.45 2.61 2.76 where k and T are expressed in mole^2/cm/min and K respectively. Calculate the activation energy of the leaching process