Question 48 - Let a ^ 2 = a x a and a ^ 3 = a x a x a where ^ is power function.

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.

Question Posted / kang chuen tat (malaysia - pen

1 Answers
2756 Views
I also Faced
E-Mail Answers

Question 48 - Let a ^ 2 = a x a and a ^ 3 = a x a x a where ^ is power function. Niobium is a metal..

Answer / 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

More Chemical Engineering Interview Questions

Why an electromagnetic flow meter cannot be used for gases, steam and oil flow measurements?

1 Answers

What compounds are responsible for the odors that come from wastewater treatment plants?

0 Answers

Whal will be the HRC fuse rating of a 3phase 415V,50Hz,0.85pf,95%efficiency,30KW,1450rpm induction motor,starting with a DOL starter.and describe the Fuse rating calculation.

1 Answers

did sulphur been a byproduct after the combustion of LPG and Natural Gas

3 Answers

What is some common piping materials used to transport slurries?

0 Answers

Hi this is aparna.............can any one send drdo question papers on my email id-aparna_patna08@yahoo.com Thanks in advance

2 Answers DRDO,

sir,please give me some exam paper for referance. Thanks & Regards,

0 Answers ONGC,

In gas and water who's density is greater and why?

5 Answers

could anyone send me model question papers or outline of graduate trainee(chemical engg) post?

0 Answers NPCIL,

BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.2 : (a) In order to determine the slurry volume (L) in chromatography, arrange the formula using the following parameters : slurry concentration (%), slurry volume (L), settled chromatography medium volume (L), 100. (b) In order to determine the chromatography medium volume (L) in gel filtration chromatography, arrange the formula using the following parameters : sample volume to be processed (L), chromatography medium volume (L), sample volume in percent of total column volume (%), 100.

1 Answers

How can you determine the proper pipe thickness for a slurry line?

0 Answers

What are the affinity laws associated with dynamics pumps?

1 Answers HPCL,

For more Chemical Engineering Interview Questions Click Here