Define how many milligrams of phosphorus are required

Assignment Help Chemistry
Reference no: EM13529313

Silicon has a face centered cubic crystal structure with unit cell edge length of 5.43 A and four atoms per unit cell A) How many silicon atoms are there in 1 cm3 of material? B) Suppose you dope that 1cm3 sample of silicon with 1ppm of phosphorus that will increase the conductivity by a factor of a million. How many milligrams of phosphorus are required?

Reference no: EM13529313

Questions Cloud

Determine the total fixed cost per unit of production : Determine the total fixed cost per unit of production, assuming that Bender produces 4,000, 4,500, or 5,000 units.
The compound ammonium dihydrogen phosphate : 1. What is the percent composition of all the elements in the compound ammonium dihydrogen phosphate?
Compute how many electrons are missing from each ion : When two identical ions are separated by a distance of 5.8 10-10 m, How many electrons are missing from each ion
Enzyme is for a modulator or regulator bind : One way to regulate an enzyme is for a modulator or regulator bind to a site on the enzyme, causing a conformational change so that the substrate can no longer fit into the active site.
Define how many milligrams of phosphorus are required : How many silicon atoms are there in 1 cm3 of material. Suppose you dope that 1cm3 sample of silicon with 1ppm of phosphorus that will increase the conductivity by a factor of a million. How many milligrams of phosphorus are required
Determine the variable cost per gross-ton mile : Determine the variable cost per gross-ton mile and the fixed cost - estimate the fixed and variable components of transportation costs.
Which contains the most atoms of chromium : 1.Which contains the most atoms of chromium? 0.025mol,6.0*10^21 atoms, or 1.5g of Cr?
Find how long will it take for it to reach sea level : A relief airplane is delivering a food package to a group of people stranded on a very small island. After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected
Nerve cell and the muscle fiber : The AB type toxin causes the paralysis of muscle by inhibiting the release of neuro transmitter at the synapse between the nerve cell and the muscle fiber a. Endotoxin b. Exotoxin c. All of the above

Reviews

Write a Review

Chemistry Questions & Answers

  Explain electronegative atom in the molecule

Since there isn't an oxygen or some other electronegative atom in the molecule I'm not sure which peaks are which.

  Find out the ph of no(g) in the reaction

Use the information given to determine the ?Hof of NO(g) in the reaction below. 4NH3(g) + 5O2(g) ? 4NO(g) + 6H2O(g) ?Horxn = -902.0 kJ (NH3(g) ?Hof = -45.9 kJ/mol; H2O(g) ?Hof = -241.8 kJ/mol)

  A steel reaction vessel has a movable piston that is set to

a steel reaction vessel has a movable piston that is set to allow an enclosed sample of gas expandnbspand contract

  Explain phosphorous-32 has a half life

Phosphorous-32 has a half life of 14.26 days. If a patient is initially given a dose ?of 1.55 g of Phosphorous-32, how much remains in the patient's body after 1 week. Assume none of the dose is excreted from the body

  Which is the molecular weight of the unknown substance

.1500g of an unknown sample was passed through a column of Amberlite-IR-200(+) resin and titrated with .2050M NaOH. If 9.75mL of titrant was required to reach phenolphthlein endpoint,

  Compute the oxygen content of the plasma in mm

How many ml of oxygen is dissolved in 50 ml blood plasma at 38 degrees C, if the partial pressure of oxygen in the plasma is 13.3 kPa?

  What will be the volume of dry nitrogen

A volume of 200mL of nitrogen is collected over water at a temperture of 24 degrees celcius and the atmospheric pressure of 100 kPa. What will be the volume of dry nitrogen at 24 degrees celcius and 125 kPa?

  Explain what is the value of delta g

An electrochemical cell has an Eocell of 2.00 V and transfers 1 mole of electrons. The Faraday constant is 96,485 C/mol e-. What is the value of delta G

  Explain what would be the ph if the same amount of hcl

What would be the pH if the same amount of HCl were added to the 125 mL of pure water? The Ka of acetic acid is 1.8*10^-5

  Explain alpha-fragmentation forms base peak

what molecule would give the following mass spec data. this molecule shows three significant fragment ions. Alpha-fragmentation forms the m/z =59 base peak

  Explain the ion could be reduced to potassium metal

If potassium ion is in solution, the ion could be reduced to potassium metal. In acidic solution, which would be more thermodynamically favorable: the reduction of K+ or the reduction of H+

  Explain h2 to form ch3 oh at constant pressure

the enthalpy change is 25.8 KJ. How many grams of H2 gas are produced? and d: How many KJ of heat are released when 50.9 g of CO gas reacts completely with H2 to form CH3 OH at constant pressure?

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