ENGINEERING MATERIAL - EXAMPLE 12.3 : Let a ^ 2 = a x a and a ^ 3 = a x a x a where ^ is power function. Niobium is a metal with a body-centered cubic structure. The length of the unit cell structure is b = 0.3349 nm. (a) Find the volume for a unit cell structure for niobium. (b) There are 2 atoms per unit cell structure of niobium. The metal has a molar mass of 92.9 g / mol. One mole of the metal consists of 6.02 x 10 ^ 23 atoms. Find the mass of niobium per unit cell and the density of niobium.
ENGINEERING MATERIAL - ANSWER 12.3 : (a) V = 0.3349 x 0.3349 x 0.3349 = 0.0376 cubic nanometers. (b) Mass per unit cell = 2 x 92.9 (g / mol) [ 1 mol / (6.02 x 10 ^ 23 atoms) ] = 3.086 x 10 ^ (-22) g = m. V = 0.0376 x [ 10 ^ (-7) ] ^ 3 = 0.0376 x 10 ^ (-21) cubic cm. Then density is m / V = 8.207 g / cubic cm.
Is This Answer Correct ? | 0 Yes | 0 No |
What is the difference between coagulation and flocculation in water treatment plant?
What are the criteria’s involved in choosing mass balances for components?
Can anyone tell me how to calculate the quantity of a third component added in an azeotropic batch distillation of a known quantity of azeotropic mixture?
Please colleagues I need to choice a proper hopper shape for a Fertilizer bulk blender flowing throut a high humidity raw material like zeolite, so we are in doubt whether use squard or rectangular hopper shape to avoid the so call voul effect that can create obstruction
Is there any facility to complete M.TECH CHEMICal eNGINEERING IN INDIA. Any college providing the same.
can any one tell me that how shoul i prepere for entrance exams of psu i mean from which book i have to gone through?
3 Answers BPCL Bharat Petroleum, GACL, GATE, IOCL,
Question 76 - Let C% be the fractional crystallinity, Rs = density of sample, Ra = density of amorphous form and Rc = density of crystalline form. In a polymer, these unknowns could be related by the equation C% = (Rc / Rs) (Rs - Ra) / (Rc - Ra). (a) Find the equation of Rc as a function of C%, Rs and Ra. (b) Two samples of a polymer, C and D exist. For sample C, C% = 0.513 when Rs = 2.215 unit. For sample D, C% = 0.742 when Rs = 2.144 unit. Both samples C and D have the same values of Ra and Rc. Find the values of Ra and Rc in 6 decimal places.
Who built the first production scale pla (polylactic acid) facility?
types and working of compressor
how to calculate material balnce & energy balnce
7 Answers MahaGenco, Oil India, ONGC,
Please help me send me questions for HPCL written test of Chemical Branch.I will be highly thankful to u...
I want to do Mtech In CHEMICAL ENGINEERING FROM IIT< BUT people say that u dont get enough money, I still want to do mtech but not mba , Please tell me about my future What should i do, I have done B. E in chemical and working as a chemical engineer only , Please guide me COZ MONEY IS NEEDED In todays world but i still want to make my career in chemical engineering