Explain increase the conductivity by a factor of a million

Assignment Help Chemistry
Reference no: EM13335794

Silicon has a FCC structure with unit cell edge of 5.43A and 4 atoms per init cell. a) how many silicon atoms are there in 1cm3 of material b) suppose you dope that 1 cm3 sample of silicon with 1ppm of phosphorus that will increase the conductivity by a factor of a million. how many milligrams of phosphorus is required?

Reference no: EM13335794

Questions Cloud

Explain the presence of nonbonding electron pairs produce : In which of these molecules or ions does the presence of nonbonding electron pairs produce an effect on molecular shape, assuming they are all in the gaseous state. Check all that apply. SiH4, PF3, HBr, HCN, SO4
Evaluate the lattice energy of nacl : Calculate the lattice energy of NaCl. Heat of sublimation is 108kj/mol and Heat of NaCl is -411kj/mol. Energy to dissociate .5 mole of Cl2to an atom of Cl is121.4 kj/mol.
Explain what is the heat capacity of the bumb : calorimeters, is -3226.7 kJ/mol. When 2.5127 g of benzoic acid was burned in a calorimeter, the temperature increased from 20.84 to 25.67C. What is the heat capacity of the bumb
What is his marginal utility from q2? what is his marginal : If Jose's utility function is U(q1,q2) = q1 + A*(q1)^a)(q2^b)+q2, what is his marginal utility from q2? What is his marginal rate of substitution between these two goods?
Explain increase the conductivity by a factor of a million : Silicon has a FCC structure with unit cell edge of 5.43A and 4 atoms per init cell. a) how many silicon atoms are there in 1cm3 of material b) suppose you dope that 1 cm3 sample of silicon with 1ppm of phosphorus that will increase the conductivit..
Define the enthalpy of combustion of benzoic acid : The enthalpy of combustion of benzoic acid (C6H5COOH) which is often used to calibrate calorimeters, is -3226.7 kJ/mol. When 3.4161 g of benzoic acid was burned in a calorimeter, the temperature increased from 20.84 to 25.67C.
The feasibility of the steps to improvement : Critique the plan for the information used, the feasibility of the steps to improvement, and implementation issues considered. Offer constructive criticism in your critique. Write your critique in a 2 page Word document formatted in APA style
The feasibility of the steps to improvement : Critique the plan for the information used, the feasibility of the steps to improvement, and implementation issues considered. Offer constructive criticism in your critique. Write your critique in a 2 page Word document formatted in APA style
An employee receives a letter of reprimand that goes in his : An employee receives a letter of reprimand that goes in his personnel file but is not demoted and not suffer any other action. Does the letter constitute an adverse employment action? Why or Why not?

Reviews

Write a Review

Chemistry Questions & Answers

  State the rate of disappearance of h2o2

how does the rate of formation of O2 compare to (a) the rate of formation of H2O and (b) the rate of disappearance of H2O2?

  Compute the freezing point in centigrade units

Calculate tthe freezing point in centigrade units of a soluiton consisting of 685 grams of ethylene glycol dissolved

  Define what is the equilibrium concentration of h2

2HI(g) ? H2(g) + I2(g) Keq = 0.016. Initially a container contains 0.46 M HI and no product. What is the equilibrium concentration of H2

  Describe how the drugs work as pain-blocker

Some anesthetic drugs relieve pain by interfering with various parts of the action potential (discussed in class). Give a brief description of how the two drugs below may work as pain-blockers.

  Calculate the enthalpy of combustion of one mole of ethanol

The enthalpy of formation of ethanol, C2H5OH, is 277.o kJ/mol at 298.15K. Calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 and H2O.

  Calculate the value of cell for the reaction

Calculate the value of E^o cell for the reaction 2Ag(s) + Ca2+ (aq) yields 2Ag+(aq)+Ca(s), using the standard reduction potentials

  What is the total cabin pressure at which oxygen makes

An airplane is pressurized to 650 mmHg, Which is the atmospheric pressure at a ski resort at 1.30 * 10^4ft alt?

  Determine the ph of a solution

Determine the pH of a solution that is 1.75% NaOH by mass. Assume that the solution has density of 1.01 g/mL.

  Compute the maximum wavelength of light

It takes 151 kj/mol to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon.

  Determine chemical reaction of naoh in air

A white solid remains in centrifuge tube after acetone extraction-it fizzes when hydrochloric acid is added suggesting sodium carbonate was formed- How did it form? Write a balanced equation for the formation?

  State how many joules of heat are produced for each electron

how many joules of heat are produced for each electron? c. If the circuit operates for thirty mins, how many mles of electrons will have flowed through the resistor?

  State a mechanism for the phtolysis of methyl butyrate

Outline a mechanism for the phtolysis of methyl butyrate assuming the reaction follows a patter similar to 2-pentanone.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd