Interested to Buy Any Domain ? << Click Here >> for more details...
Question 48 - 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.
- 1 Answers
- 2675 Views
- I also Faced
- E-Mail Answers
Answer Posted / kang chuen tat (malaysia - pen
Answer 48 - (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. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Cooling water line sizing ?
send me previous year question paper for ongc gt 2011 written exam
Who built the first production scale pla (polylactic acid) facility?
What is a good relation to use for calculating tube bundle diameters?
What is difference between overall heat transfer coefficient & individual heat transfer coefficient?
What is the import procurement cycle? What are the customization steps in sap?
What are the merits of using a falling film evaporator?
In a crusher where is the energy provided to it is used up for?
What is carbon sequestration?
Explain how can you quickly estimate the horsepower of a pump?
In case of welded vessels why is stress relieving in the form of post-weld treatment necessary?
what is AZ431 & how to check it by using multimeter?
Please describe tar, asphalt and bitumine
How is plate heat exchangers used in an ammonia refrigeration system?
What is the wet bulb globe temperature?
