Thursday
April 17, 2014

Search: Rank the crystal lattice structures in order of decreasing efficiency of space in the structure.

Number of results: 24,005

Algebra
A :lattice point; has integer coordinates. Then, A = (m, n) is a lattice point if both m and n are integers. Let・s call a point P = (x, y) :generic・・ if all the distances from P to lattice points are different. With some algebraic work, I checked that the point S...
Thursday, April 15, 2010 at 3:57am by Shrek

chemistry(check my answer)
how do resonance structure related to its real structure? resonance structure is just another way to write the lewis dot with different formal charges and bond order
Thursday, April 8, 2010 at 1:21am by phys

chemistry
Sugars have so many OH bonds that hydrogen bonding can take place easily which makes it harder to break the crystal lattice.
Wednesday, May 7, 2008 at 10:34pm by DrBob222

chemistry
In a laboratory experiment, the density of a concentrated sugar solution was determined by measuring the volume of the solution and corresponding mass. Three students each made a set of measurements using a different balance and used the results to calculate density. Their ...
Saturday, August 30, 2008 at 3:11am by helpp

Chemistry
(a)What is the bond order of the diatomic molecule BN? (b) Is BN paramagnetic? (c) Rank the following compounds in order of increasing bond energy: B2, N2, BN. (d) Rank the following compounds in order of increasing bond length: B2, N2, BN.
Sunday, November 18, 2012 at 2:43pm by b

science
Try some of the following links for information : http://search.yahoo.com/search?fr=mcafee&p=what+is+the+crystal+structure+of+solid+europium Sra
Tuesday, October 4, 2011 at 8:44pm by SraJMcGin

biology
because of the molecular weight of the molecules and structure of the ion channels and carriers or vectors and one more thing is all the structures of channels and carriers structure is genetically determined.
Friday, February 17, 2012 at 1:16pm by ramannachowdary

Difracction problem
i think b only ask for the expression, not the actual value????...beside, in order to get the actual value of lattice constant, we need the radius...is the radius given or can it be determined???... i tried expressing the lattice constant for the BCC as 4r/sqrt3 but can't get ...
Sunday, June 2, 2013 at 6:43am by bonjo

Resonance structures
I won't try to draw one here but take for example, CH3CH2COO-. This has two resonance structures but they look the same to me. The CH2-C single bond can rotate and it looks like you can just flip the COO- section and it looks like the same structure. Maybe that's the point. ...
Saturday, September 30, 2006 at 1:41am by Sheryl

Lattice method/math
OMGGGG.I LOVE THE LATTICE METHOD.ITS SO EASY.I CAN DO LIKE HUNDREDS OF THEM.I GOT EXTRA CREDIT ON MY H.W FOR DOING LATTICE METHOD.I DID 2 TIMES AS MUCH AS I WAS GOING TO DO.IF U WANNA FIGURE IT OUT MULTIPLY 5 FROM 2.WHAT DO YOU GET?
Tuesday, September 19, 2006 at 8:25pm by Evelyn

Chemistry
The charge difference between cation and anion as well as the size of the ion usually controls the lattice energy. Since the anion is the same (Cl^-) and the charges are the same (+1 on cation and -1 on anion), then the size probably makes the difference. Na ion is smaller ...
Tuesday, November 4, 2008 at 5:27pm by DrBob222

Chemistry
Some (or all) of the structures below are representations are of the same molecule. How many unique structures are shown (i.e., how many structures with different molecular formulae)? Image: img6(dot)imageshack(dot)us/content.php?page=done&l=img6/5716/80685628.jpg&via=mupload ...
Thursday, July 2, 2009 at 12:27am by Toronto

chem
We can't draw diagrams or structures on the boards because of spacing problems. But thanks for the answer because it tells me what your problem is. You have drawn the structure and it contains 1 N-O bond and 1 N=O bond as well as a pair of unshared electrons on the N atom. ...
Thursday, May 1, 2008 at 5:49pm by DrBob222

chemistry
A yes. B no. C probably yes. Wouldn't the entropy increase as the crystal lattice of NH4NO3 is broken and individual ions are floating around, even at a lower temperature? D yes.
Wednesday, October 20, 2010 at 9:33pm by DrBob222

Chemistry
What type of lattice would FrCl have? ...im not sure about this, would a lattice form? if so, how to determine lattice type?
Friday, October 21, 2011 at 12:58pm by Alex

CHemistry....Please help
How do you find out the coordination number of a crystal? For example im given a picture of the crystal structure of lithium sulfide Li2S. SO i need to find coordination number for: Li^+ S^2-
Saturday, January 24, 2009 at 3:54pm by Saira

Chemistry Problem
You need to go through the "cycle" to see this. M(s) ==> M(g) dH = 121 kJ M(g) ==> M^+(g) + e dH = 433 kJ 1/2 X2(g) ==> X(g) dH = 229/2 kJ X(g) + e ==> X^-(g) dH = -313 kJ M^+(g) + X^-(g) ==> MX(s) dH = Ecrystal ----------------------------- Add these. M(g) ...
Saturday, February 2, 2013 at 1:25am by DrBob222

womens studies
The word "ranking" suggests hierarchy: first rank, second rank, etc. The first rank is "higher" than the second rank. Therefore gender ranking implies one sex is higher or better than the other.
Tuesday, September 25, 2007 at 1:11pm by Leo

chemistry
Ionic compounds at room temperature usually exist as solids with distinct crystalline lattice structures. True False I think true
Saturday, November 10, 2012 at 6:43pm by Keri

chemistry
I need to find out which structure is more correct: Reaction of the compound C3H8O with CrO3 (oxidizing agent) yields acetone. Which of the three structures is more correct? (My three structures are as follows: 1-propanol, 2-propanol, and methylethyl ether.)
Tuesday, January 18, 2011 at 7:19pm by ella

Chemistry
Rank the following compounds in order of their solubility in water. (most soluble = 1 -- least soluble = 4)--Note that for the same solubility rank the same (a tie). (CH3)2CHOH HOCH2CH(OH)CH2OH CH3CH2OH (CH3)3COH
Thursday, March 14, 2013 at 1:52pm by Maddie

chemistry
The structure of C12E5 is given below. what type of surfactant is it? Will CMC of C12E5 be smaller or larger than SDS? Rank the following solutions in order of increasing capability to dissolve oil. options are 9*10^-5M C12E5 , 6*10^-5M C12E5 , 3*10^-5M C12E5 , pure water. plz...
Sunday, June 2, 2013 at 12:06am by Anonyms

chemistry
For ionic compounds, the lattice energy varies with distance between centers of the ions as well as on the charge of the ions. The higher charge has the higher lattice energy and the smaller ions have higher lattice energy than large ions. Therefore, the CaO is +2 and -2 ...
Thursday, March 3, 2011 at 2:23pm by DrBob222

BIOLOGY
how does the structure of DNA contribute to the accurate transmission of hereditary material? hereditary material Not much help courtney. I'd say its structure utilizing vanderwahls forces allows it to have a quaternary structure which takes up less space. (tightly coiled) Try...
Monday, November 20, 2006 at 7:29pm by Alex- hlp plz

CHEM
the number of nonbonding electrons exceeds the number of bonding electrons in the lewis structure of which of the following molecules? I am having a problem with the Lewis structures. HCN NH3 H2O please explain the structure thank you so much
Tuesday, February 25, 2014 at 9:40pm by layla

psychology
The sentences, "Lee gave the ball to Lynne" and "Lynne received the ball from Lee," have the same: surface structure. syntax. surface and deep structures. deep structure. Does this sentence have both surface and deep structure? From reading my text book, I believe it does, but...
Sunday, October 31, 2010 at 5:23pm by cindy

lattice point
A lattice point is an ordered pair (x, y) where both x and y are integers. A triangle is formed by the three points (1, 1), (9, 1) and (9, n). For what integer value of n 0 are there exactly 560 lattice points strictly in the interior of the triangle?
Wednesday, June 27, 2012 at 1:14pm by Anonymous

math
Yes, your answers look correct! The order is okay. The polynomial is usually arranged so that the exponent of one variable is in increasing or decreasing order.
Thursday, August 21, 2008 at 9:54pm by Infinity_plus_one

chemistry
Only one because all of the bond lengths are the same. We can't draw the actual structures so we draw several "resonance structures" and all of us understand that the "real" bond structure is an average of all those we have drawn but isn't any one of them.
Thursday, April 3, 2014 at 12:31am by DrBob222

Chemistry
I think 9 is correct but technically, I think both dissolving and dissociation occur together. The ions are already there in the crystal. In dissolving, the water dipoles pull the ions apart which tears up the crystal bonds (structure) which leaves the ions to be hydrated. So...
Tuesday, October 6, 2009 at 1:57pm by DrBob222

organic chem/ melting pt lab
In general, a tighter packed crystal lattice of a solid will have a higher melting point. Impurities tend to disrupt the crystal lattice, so they always lower the melting point to a certain limit, which is called the eutectic point. The blend is called a eutectic mixture. When...
Wednesday, May 27, 2009 at 10:55pm by PC

Chemistry
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 2.77 , and the density of the crystal is 8.65 . Find the atomic weight of the element.
Thursday, January 17, 2013 at 3:26pm by John

psychology
The sentences," lee gave the ball to LYNNE" and Lynne received the ball from Lee,"have the same: a. surface structure b. syntax c. surface and deep structures d. deep structures I chose A, is that right?
Friday, September 30, 2011 at 3:12pm by bj

physical
Rank the following 3 classes of materials in order of increasing typical Young's Modulus: metals such as copper, plastics such as HDPE (high density polyethelene), and ceramics such as alumina (Al2O3). Do not look up the values of Young's Modulus, instead base your answer on ...
Thursday, April 4, 2013 at 1:18pm by Anonymous

science
Can some one help me I dont know what to take out from the aspirin molecule, for the following structures? I have to generate a copy of the molecular structure of aspirin and then for each of the molecular features listed in (i) (iii) have to produce a related structure ...
Friday, June 29, 2007 at 6:41pm by katie

Organic chemistry
Write contributing (important) resonance structures for each of the following compounds and predict their relative C=O vibrational frequencies based on the importance of the contributing resonance structures. List in them order from highest to lowest frequency. a.) ...
Tuesday, February 17, 2009 at 8:08am by Jane

socology
what is the meaning of ventilation and space of structures
Sunday, February 10, 2013 at 11:31am by tijani

art
Outline the main goals of Green Architecture, describing how one or several architects achieved each of those goals in a specific structure. Discuss the advantages and difficulties of Green Architecture in terms of meeting the functions of structures and the needs of those who...
Friday, July 29, 2011 at 7:49am by Pebbles

URGENT HELP: calculus - limits at inifinity
1.The efficiency of an internal combustion engine is: efficiency (%) = 100 [1 - (1/(x/y)^c)] where x/y is the ratio of the uncompressed gas to the compressed gas and C is a positive constant dependent on the engine design. Find the LIMIT of the efficiency as the compression ...
Thursday, December 13, 2007 at 10:15pm by Anonymous

chemistry
You should be more specific. Do you want the Lewis structures or something different? For your information, we can't draw structures on this forum; however, you can go to google.com and type in the word "lewis structures iron chloride" and the others (without the quotation ...
Sunday, February 27, 2011 at 8:18am by DrBob222

Chemistry - Bond Order
I spent some time looking on the web for the Lewis structure for BN but had no luck. I would do it this way. B:::N: B has 3e and N has 5 and 8 total. The structure I have drawn has zero formal charge on both B and N. The structure I have drawn has no unpaired eletrons; ...
Sunday, May 2, 2010 at 9:35pm by DrBob222

Chemistry
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.5 Angstrom, and the density of the crystal is 7.39g/cm^3. Calculate the atomic weight of the element. A= ? g/mol
Monday, May 3, 2010 at 7:37pm by Anna

Science to: DrBob222
1. Most ionic compounds have a crystal structure. You must break the chemical bond and tear away the crystal structure. Basically it takes less energy to break the covalent bonds than an ionic bond. 2. Dissolve the compound in water and test the conductivity. Strong ...
Sunday, March 2, 2014 at 10:09pm by DrBob222

chemistry
Rank from decreasing to increasing the effect the functional groups have on the melting point of compound x: -OH or -COOH i think its COOH<OH because OH is easier to hydrogen bond?
Tuesday, December 2, 2008 at 12:47am by un

Calculus
In increasing order, rank: 3^ln 2, 2^3, 2^ln 3 *do not use a calculator, and explain your choices Obviously, 2^3=8 So, instinctively, I entered the other values into my calculator just to rank the quantities using decimal places. However, in my calculator, 3^ln 2 and 2^ln 3 ...
Sunday, October 3, 2010 at 7:45pm by Jon

Chemistry
You're on the right track. Crystals that can form slowly form more perfect crystals with fewer "contaminating" particles getting caught within the crystal lattice. Cooling slowly aids the more perfect crystal process. For the solvent, you want one that will dissolve the solute...
Monday, March 8, 2010 at 10:31pm by DrBob222

Lattice method/math
how do you do lattice boxes with a ten and then a ones
Tuesday, September 19, 2006 at 8:25pm by haley

Lattice method/math
lattice is dang easy man
Tuesday, September 19, 2006 at 8:25pm by samantha

ap chem
There are several oxides of nitrogen; among the most common are N2O, NO, and NO2. 1.Write the Lewis structures for each of these molecules. In each case the oxygens are terminal atoms. 2. Which of these molecules "violate" the octet rule? 3. Draw resonance structures for N2O. ...
Tuesday, January 9, 2007 at 3:48pm by Justyna

statistic
Identify the level of measurement for the following? 1)What state/country were you born? 2)What is the temperature outside rigth now? 3)Rank all of the courses you are currently.The class you look most forward to taking will be rank one ,next two ,and so on . what is the rank ...
Wednesday, July 13, 2011 at 12:07am by mike

Math
How many {(1,1),(1,−1),(2,0)}-lattice paths are there from the point (0,0) to the line x=8? Details and assumptions A lattice path is a path in the Cartesian plane between points with integer coordinates. A step in a lattice path is a single move from one point with ...
Monday, July 15, 2013 at 1:16pm by Mark

chemistry
What is the new crystal structure and formular of NaCL + C6H12O6
Friday, August 5, 2011 at 5:45pm by Lewis

Chemistry
The crystal structure of lithium sulfide (Li2S) is pictured here. The length of the unit cell is 5.88 x 10^2. For this structure, determine: a)the coordination number of Li and S b) the number of formula nunits in the unit cell c) the density of Li2S
Wednesday, April 15, 2009 at 7:36pm by Erica

Chemistry
Your Lewis structure for BrO3^- should be trigonal planar with a double bond between the central Br atom and one of the O's. Since the double bond could be with anyone of the O's, you can draw three different resonant structures. ClO4^- is tetrahedral with only one stable ...
Sunday, September 28, 2008 at 2:00am by GK

Biology
Find a recent (from 2009 June onwards) and interesting article from the mass media with a theme that is related to topics learnt in Cell Biology. So far I've learnt Membrane Structure & function,Organelles and their structure & function, as well as their membrane systems, and ...
Wednesday, February 17, 2010 at 8:03am by alex

biology
describe 2 structures of bacterial cells what they look like and their molecular structure
Wednesday, January 13, 2010 at 5:50pm by jessica

Chemistry
All chemicals have various solubilities in various solvents. The solubility depends upon the lattice energy of the crystal versus the solvation energy of the ions.
Sunday, December 2, 2007 at 2:12am by DrBob222

science
Propene is a gas. Methanol is a liquid. I would think methyl alcohol (methanol) has hydrogen bonds in the crystal lattice so it has a higher melting point than propene.
Thursday, August 12, 2010 at 1:49pm by DrBob222

ACT
This is kinda of stupid question but I really need to know. What does class rank mean on ACT score report?? Is it the rank for ACT test takers in your school? or is it the rank for your grades in high school ??
Wednesday, May 21, 2008 at 8:08pm by gigi

history
I'm glad you understand the political, social, and cultural structures of the Aztecs. The question is asking how these structures helped them when they met the Spanish invaders. How did these structures give them problems?
Sunday, November 2, 2008 at 10:20pm by Ms. Sue

Chemistry AP HELP!
Looks like 12 do a web search on "tausonite coordinate oxygen" and pick the "Crystal Structures" link for a good diagram.
Friday, November 18, 2011 at 11:28pm by Steve

Urgent Chem help.plz
The crystal structure of lithium sulfide (Li2S) is pictured here. (Intro 1 figure) The edge length of the unit cell is 5.88*10^2^2 pm. i guess it is FCC ( face cenred cubic) 1-- What are the coordination numbers of and Li^+ and S^2- in the lithium sulfide crystal shown? Enter ...
Saturday, January 24, 2009 at 3:03pm by Julia

Chemistry
In recrystallizations, one uses the minimum amount of solvent to dissolve the material in a HOT solution, then cools the solution to obtain the crystals. The idea is that the solute is less soluble in the cold solution than in the hot solution. a. If one uses too much solvent...
Monday, February 8, 2010 at 10:25pm by DrBob222

chemistry
If lithium is a BCC crystal. planar density is atoms per area the 001 plane look like this o--o | | o--o the sides are equal to lattice constant a and the atoms in this area = 4(1/4) = 1
Friday, April 26, 2013 at 1:29am by Karl

maths
How many lattice points lie on the sphere x^2+y^2+z^2=2013? Details and assumptions A lattice point has integer coordinates.
Wednesday, April 3, 2013 at 3:27am by Anonymous

chemistry
None. Many people, and I include myself, misuse the two terms because we often use them interchangeably. Actually, they are not. Two examples. 1. NaCl is a solid crystal that consists of Na^+ and Cl^- bound together in a crystal lattice. When this crystal is placed in water it...
Sunday, April 25, 2010 at 10:50pm by DrBob222

Lattice method/math
lattice is easy
Tuesday, September 19, 2006 at 8:25pm by Anonymous

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
Sunday, April 3, 2011 at 3:56pm by Abby

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
Tuesday, April 5, 2011 at 6:20am by Abby

physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
Thursday, April 7, 2011 at 4:14pm by Jen

Science
1. Find the lattice parameter of pure iron at room temperature. 2. What is the ratio of the lattice parameter of the iron to the wavelength of the radiation used. 3. What is the value of two theta for the second peak? 4. By what factor is the lattice parameter of the Fe bigger...
Wednesday, August 15, 2012 at 12:21am by Justin

help~MATHS
Let S be the set of {(1,0),(0,1),(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Let Px,y be the number of paths in S which end at the point (x,y). Determine P2,4. Details ...
Thursday, May 23, 2013 at 11:25pm by SOmebody

sd224
Let S be the set of {(1,0),(0,1),(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Let Px,y be the number of paths in S which end at the point (x,y). Determine P2,4. Details ...
Sunday, June 30, 2013 at 9:04pm by doeom

Biology
Just need this checked: 'The cytoskeleton of eukaryotes serves many functions. One of these functions is served in prokaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the two cell types?' My ...
Friday, February 5, 2010 at 8:36pm by mysterychicken

chemistry
solid KC consists of K^+ and Cl^- in a structured crystal lattice. If in solution, we have the hydrated K and Cl ions; i.e., K^+(aq) + Cl^-(aq)
Thursday, April 7, 2011 at 8:32pm by DrBob222

Lattice method/math
The lattice method originated from ancient India. Unlike the partial-products method which relies on your knowledge of place value, you can use the lattice method as long as you are familiar with your basic facts. The cells are called lattices. Basically you multiply the ...
Tuesday, September 19, 2006 at 8:25pm by Vee

english
the sentences Lee gave the ball to Lynne and Lynne recieved the ball from Lee have the same: A surface structure B syntax C surface and deep structures D deep structure I was thinking is A but I am not sure
Wednesday, September 16, 2009 at 4:24pm by vedrana

psychology
the sentences Lee gave the ball to Lynne and Lynne recieved the ball from Lee have the same: A surface structure B syntax C surface and deep structures D deep structure I was thinking is A but I am not sure
Wednesday, September 16, 2009 at 4:45pm by vedrana

Psychology
The sentences, "Lee gave the ball to Lynne" and "Lynne received the ball from Lee," have the same: surface structure. syntax. surface and deep structures. deep structure. I am going for C Not Sure
Monday, March 14, 2011 at 6:06pm by Chloe

Organic Chemistry
Spacing is a problem with these boards; therefore, we can't draw structures, lewis dot structures, etc. If you will name the compound or describe it someway, I may be able to find the resonance structures on the web.
Friday, September 18, 2009 at 6:06pm by DrBob222

chemistry
Please help. My teacher never went over crystal lattices and the book doesn't cover it either :( Copper crystallizes in a face-centered cubic lattice. If the edge of the unit cell is 351pm, what is the radius of the copper atom?
Monday, December 10, 2012 at 4:35pm by Jess

chem
The crystal structure of lithium sulfide (Li2S) is pictured here. (Intro 1 figure) The edge length of the unit cell is 5.88*10^2^2 pm. i guess it is FCC ( face cenred cubic) 1-- What are the coordination numbers of and Li^+ and S^2- in the lithium sulfide crystal shown? Enter ...
Saturday, January 24, 2009 at 3:35pm by Dr Bob plz help

Chemistry
there is a picture on google images... if you type in "crystal structure of lithium sulfide"......
Wednesday, April 15, 2009 at 7:36pm by Erica

help needed !!! URGENT
Can some one help me I dont know what to take out from the aspirin molecule, for the following structures? I have to generate a copy of the molecular structure of aspirin and then for each of the molecular features listed in (i) (iii) have to produce a related structure ...
Saturday, June 30, 2007 at 4:51pm by kat

Science - Chemistr++++++++++++++++++++++++++++++++
List materials that are commonly found at home or in school that have: a. Different structures and exhibit different properties b. The same chemical make-up (composition) but with different structures, hence, different properties c. The same properties but with different ...
Monday, June 24, 2013 at 11:04pm by Annika

Science-Chemistry
List materials that are commonly found at home or in school that have: a. Different structures and exhibit different properties b. The same chemical make-up (composition) but with different structures, hence, different properties c. The same properties but with different ...
Monday, June 24, 2013 at 11:05pm by Annika

Technology
It sounds great, but frankly, I dont know what is meant by constucted structures. What would be a not-constructed structure?
Monday, April 5, 2010 at 12:10pm by bobpursley

chemistry
NaCl consists of a three dimensional array of Na^+ and Cl^-. NaCl must be melted to break the crystal structure holding it together, then the ionic forces must be broken in order to bring NaCl to a boil. CH3OH, on the other hand, is a liquid already (no melting required) and ...
Monday, October 8, 2007 at 2:46pm by DrBob222

socology
http://www.google.com/webhp?source=search_app#hl=en&sugexp=les%3B&gs_rn=2&gs_ri=hp&cp=36&gs_id=2&xhr=t&q=ventilation+and+space+of++structures&es_nrs=true&pf=p&tbo=d&output=search&sclient=psy-ab&oq=ventilation+and+space+of++structures&gs_l=&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&bvm...
Sunday, February 10, 2013 at 11:31am by Ms. Sue

CHEM**
Decreasing atomic radius means, to me, that we list the lagest radius first and the smallest radius last. That is the way they are listed above which is what the problem asked for. I don't understand why decreasing atomic radius and decreasing atomic size are not the same, at ...
Tuesday, November 13, 2007 at 8:04pm by DrBob222

chem
well what do you mean "condensed" structure? This would be doing your homework for you, do you realize? moving on.. what structures can you come up with, natash?
Monday, May 5, 2008 at 11:28pm by ~christina~

chemistry
write the lewis structure for dinitrogen oxide. include the 2 resonance structures and formal charges where appropriate.
Monday, September 20, 2010 at 9:42pm by Missy

Physics
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
Thursday, April 7, 2011 at 5:50pm by Abby

Physics
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
Friday, April 8, 2011 at 1:16pm by Vanda

Biochemistry
Yes they would be different, but it wouldn't be due to their Km values. Although they do the same thing, which is to convert glucose into glucose-6-phosphate, their 3D structures would be different because they are isoenzymes and are inhibited differently because of how their ...
Saturday, January 26, 2013 at 6:58pm by Devron

Physics urgent!!!!
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
Friday, April 8, 2011 at 3:40pm by Vanda

math
Let S be the set of {(1,1), (1,−1), (−1,1), (1,0), (0,1)}-lattice paths which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Let Sx,y be the set of paths in S which end at (x,y).For how many ordered pairs (x,y) ...
Tuesday, July 23, 2013 at 8:03pm by andy

math
Let S be the set of {(1,1), (1,−1), (−1,1), (1,0), (0,1)}-lattice paths which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Let Sx,y be the set of paths in S which end at (x,y).For how many ordered pairs (x,y) ...
Wednesday, July 24, 2013 at 5:42pm by Anonymous

Biology
Try some of the following links for information: http://search.yahoo.com/search?fr=mcafee&p=all+the+structures+in+order+that+bile+passes+through Sra
Monday, October 17, 2011 at 6:36pm by SraJMcGin

physics
why we cannot use visible light for studying the crystal structure using Braggs diffraction method?
Thursday, May 19, 2011 at 1:36pm by diwakar

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