9-14 Using the densities in Appendix A, convert the heats of fusion in Table 9-1 from units of J/cm³ to kJ/kg.
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- Question-6. For solidification of a piece of FCC-metal at 860 °C. The melting point of the metal is 1260 °C. The latent heat of fusion and surface free energy are -2.16 x108 J/m³ and 0.126 J/m², respectively. If nucleation is homogeneous, answer the following questions: (a) Compute the critical radius r* in nm (b) Compute the activation free energy AG* in J (c) If the lattice parameter is 0.26 nm at the melting temperature, compute the number of atoms found in a nucleus of critical size (d) Compute the critical radius at the supercooling degree of 260 K.Question 2 What is Kennedy theorem? Please explain Kennedy theorem according to the below picture.What is the solubility of naphthalene at 50 C in an ideal solution? The melting point of naphthalene is 90 C and the molar heat of fusion is 3500 cal/mole. the gas constant = 1.987 cal mol'degree %3D Select one: O a. 0.55 Ob.93.3 Oc.0.27 Od.6.7
- 9-15 Assume that instead of aspherical nucleus, we have a nucleus in the form of a cube of length x. Calculate the critical dimension x* of the cube necessary for nucleation. Write an equation similar to Equation 9-1 for a cubical nucleus, and derive an expression for x* similar to Equation 9-2.a) What is latent heat of vaporization? Latent heat of fusion? b) Assuming a solid material has a specific latent heat of fusion of 334 kJ/kg, what is the energy required to completely melt this material? Mass = 20 kg? c) If the material from part b melts at 200oC and starts at 20oC, what is the total amount of energy required to both bring it to its melting point and melt all of the material? (Cp = 18 kJ/kgK)Please solve this question. Thank you very much
- Calculate the weight fraction for phases at point B? what are those phases? Is there any eutectic rection? How many phases are present in this diagram? Cu-Ni system T(°C) TA 1300 -L (liquid): A tie ļine liquidus L +a Тв EB solidus (solid) 1200 TD ID 20 3032 35: 4043 50 Ca wt% NiThe question is the image, and could you explain to me how to get the answer because the teacher never discusssed this type of exercise in class and i don't know the proccess of solving itAt what temperature does solidification form at 10% Ni? T(°C) 1600 1500 1400 1300 1200 1100 1000, Answer: L (liquid) L+a solidus liquidus 20 40 60 wt% Ni 86 100