Monday
April 21, 2014

Homework Help: Chemistry

Posted by Laffy Taffy on Sunday, March 11, 2012 at 4:11am.

Boron Phosphide, BP, is a semiconductor, and a hard, abrasion resistant material. It is made by reacting Boron tribromide and phosphorus tribromide in a hydrogen atmosphere at high temperature (>750 degrees C)
(a) Write a Balanced chemical equation for the synthesis of BP

(b) Boron Phosphide crystallizes in zinc blende structure, formed from boron atoms in a face-centered cubic lattice and phosphorus atoms in tetrahedral holes. How many tetrahedralholes are filled with P atoms in each unit cell?

(c) The length of a unit cell of BP is 478pm. What is the density of the solid in g/cm?

(d) Calculate the closest distance between a B and a P atom in the unit cell?
(Assume the B atoms do not touch along the cell edge. The B atoms in the facestouch the B atoms at the corners of the unit cell)

(e.) Determine the radii of B and P, Compared with published values, is the solid ionic ormolecular?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - In the context of a silicon-based semiconductor, match each of the ...
Chemistry - In the context of a silicon-based semiconductor, match each of the ...
Chemistry - Boron has only two naturally occurring isotopes. The mass of boron-...
chemistry - Naturally occuring boron is 80.20% boron-11 and 19.80% of some other...
chemistry - Use demensional analysis to convert 4.68 grams of boron to cubic ...
Chemistry - Using the given boiling points, predict which compound has the ...
Chemistry - Which of the following elements (C, B, Be, Li for both parts of the ...
CHEM - I kind of need some guidance with "PART C" below: A) The bond angles in ...
Chemistry - Water had the lowest bp of 100C b/c it has no solute to block the ...
CHEM - kind of need some guidance with "PART C" below: A) The bond angles in ...

Search
Members