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

20,987 results, page 5
1. ## matrices

Let A be a 5 by 4 matris and suppose that the system Ax=b has a solution. Explain why the solution is unique if and only if the rank of A is 4. I said that it is unique becaue the rank is equal to the number of columns. Do you have a better explaination.
2. ## Water treatment

If the RQ is 6 and the k2t is 4, what is the removal efficiency of (CO2) of the co-current tower aerator. What will be the efficiency if a tower aeration with counter current flow is used instead? what is the efficiency of the co-current tower aerator (%):
3. ## Physics

Engineers are trying to create artificial "gravity" in a ring-shaped space station by spinning it like a centrifuge. The ring is 100m in radius. How quickly must the space station turn in order to give the astronauts inside it weights equal to their
4. ## Physics

Engineers are trying to create artificial "gravity" in a ring-shaped space station by spinning it like a centrifuge. The ring is 100m in radius. How quickly must the space station turn in order to give the astronauts inside it weights equal to their
5. ## Biology

c. The cytoskeleton of eukaryotes serves many functions. One of these functions is served in eukaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the two cell types? Is it

Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure
7. ## Technology~bobpursley

25. Briefly explain the difference between product design and system design. 25. There are a few differences between system design and product design. System design deals with the arrangement of components to produce a desired result. For example,
8. ## chemistry

a metal crystallizes in the face centered cubic crystal structure with a unit cell edge of 5.48 x10 power of -8 cm. the density of the metal is 6.90 g per cubic cm. a. what is the mass (g) of a single atom of this element. b. what is the atomic weight of
9. ## Designing Specialty Areas

You're designing a space for families. Which of the following would be an important step in developing the space? A. Form a group of current teachers and teaching assistants to design the area. B. Hire a consultant to design the space. C. Have the director
10. ## English

1. May I take your order? 2. Would you like to order now? 3. Will you order? 4. Order, please. 5. Please order your food. 6. Are you ready to order? 7. Do you want to order? 8. Why don't you order? 9. How about ordering? 10. What do you think of ordering?
11. ## Chemistry

Draw the structure of the tripeptide “Asp-Ala-Ile” at pH = 1. Then determine the total charge of the tripeptide. The side chain of each amino acid is shown below in the form at pH = 7. (So when you use them to answer this question, you might need to
12. ## economics

Different market structures are prevailing in our different sectors like agriculture, power supply, transport industry, cement industry, restaurants, etc. Analyze and compare the characteristics of all market structure with respect to the given sectors.
13. ## economics

Different market structures are prevailing in our different sectors like agriculture, power supply, transport industry, cement industry, restaurants, etc. Analyze and compare the characteristics of all market structure with respect to the given sectors.
14. ## Bio

Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to
15. ## Bio- Chemistry

How can you identify the difference between an plant and animal cell. What structures (you should have at least 2) should you look for in each in order to tell the difference?
16. ## chem

Are these correct? Rank the following species in order of increasing acidity. Explain your reasons of ordering them as you do. NH3 ,H2SO4, CH3OH, CH3COOH CH3COOH > H2SO4> CH3OH >NH3 Rank the following species in order of increasing basicity.
17. ## Chemistry

The question on one of my assignments says, "Explain why a thick layer of ice on the lake can support the weight of a person, but the liquid water cannot." I would assume it's because solids are solid and liquids are liquid, but I feel like they want a
18. ## CHEM

If NO3- has 3 resonance structures, but only one has to be written, where does the extra electron, making there then be 24 electrons, go if you cannot put brackets around the structure you are drawing? Do you put -1 on both of the singly bonded
19. ## O.Chem -> PLEASE CHECK!!

Please check these out for me, if I am correct: Match the following statements with SN1 or SN2 reactions: 1) The order of reactivity in alkyl halides is methyl>primary>secondary>tertiary 2) There is an intermediate carbocation 3) The rate-limiting
20. ## percentile rank

i would like to able to find the percentile rank of a z score 0.313152 can someone tell me how to do this.
21. ## PSYCHOLOGY

Why was the perspective followed by Wilhelm Wundt and his followers called structuralism? a. They wanted to identify the major brain structures. b. Their primary goal was to understand the physiology of the mind. c. They focused their efforts on
22. ## Geology

A crystal of zircon separated from an igneous rock, was analyzed, and found to contain 7930 atoms of 207Pb, and 12070 atoms of 235U. Knowing the half life of 235U is 713 million years, how old is the zircon crystal? Please show your calculations so that I
23. ## finance (efficiency of management)

The best indication of the operational efficiency of management is? A. net income B. earnings per share C. EBIT D. gross profit I like net income as a metric for operational efficiency because net income is how much money the company has after to paid all
24. ## AP Statistics

Suppose a Normal model describes the fuel efficiency of cars currently registered on your state. The mean is 24 mpg, with a standard deviation of 6 mpg. -Describe the fuel efficiency of the worst 20% of all cars. I know that you convert 20% into decimal
25. ## **CHEM

Place the following elements in order of Decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium. would the correct ranking then be: Cs, Sr, Te, Se, Br, Ar ??? or am I still way off??
26. ## chemistry

7. (a) Determine the crystal lattice energy for LiF(s) given that the ∆Hsubl for Li = 155kJ/mol, ∆H0f for F(g) = 78.99kJ/mol, IE1 of Li = 520kJ/mol, EA for Fluorine = -322kJ/mol and the ∆H0f LiF(s) = -589.5kJ/mol (b) For the following
27. ## AP Chemistry

I don't understand this question and answer can someone help me? In order to exhibit delocalized pi bonding, a molecule must have . At least resonance 2 resonance structures.
28. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free carriers/cm3) in
29. ## Math

In order to begin advertising the single family homes, Bert asks Abigail to figure out the cost of each home, based on the company’s costs to build the entire development. After some additional adjustments, Abigail came up with the formula C space equals
30. ## Chemistry

1) it is found that .30 M solutions of the three shots Na3X, Na2Y and NaZ have pH's of 8.5, 7.0 and 10.5 not necessarily in order. (X,Y, and Z AE anions. Na is sodium ion) A) explain how anions can act as bases in aqueous solution. Write a chemical
31. ## MATH

A lattice point is a point with integer coordinates. How many lattice points $(x,y)$ with $-100\le x\le 100$ and $-100\le y\le 100$ are on the graph of the parametric equations \begin{align*} x&=30-40\cos t,\\ y&=-50 + 30\cos t? \end{align*}
32. ## Chem

Which molecule is not polar (possesses no net dipole)? Option 1. acetone [Marvin structure] Option 2. cis-dichloroethene [Marvin structure] Option 3. methylbromide [Marvin structure] Option 4. trans-dichloroethene [Marvin structure] Option 5.
33. ## Chemistry

If the RQ is 6 and the k2t is 4, what is the removal efficiency of (CO2) of the co-current tower aerator. What will be the efficiency if a tower aeration with counter current flow is used instead? what is the efficiency of the co-current tower aerator (%):
34. ## science-chemistry

how do the following changes affect the speed of a reaction? a)Increasing the concentration of the reactans. b)Decreasing the temperature. c)Decreasing the partickle size of a solid reactant.
35. ## social studies

which of the following contributed to Britain's industrial revolution? A. large labor force C. powerful monarchy B. decreasing food D. decreasing money
36. ## Chemistry

A student draws four resonance structures for nitromethane (CH3NO2). How many lewis structures should have been drawn to represent nitromethane?
37. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091*10^-7 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free
38. ## Chemistry

Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free
39. ## Chemistry

Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free
40. ## Chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091X10^-2 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free
41. ## chemistry

Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free
42. ## chemistry

Chemical analysis of a germanium crystal reveals indium at a level of 0.03091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free

As your first job as the new manager at the outdated, adversarial company, write a plan for changing its organizational structure, incorporating the following elements: Your vision of the new organizational structure for your division including how you

Please check these out for me, if I am correct: Match the following statements with SN1 or SN2 reactions: 1) The order of reactivity in alkyl halides is methyl>primary>secondary>tertiary 2) There is an intermediate carbocation 3) The rate-limiting
45. ## grammar

what is parrallel structure? Parallel structure is making sure that all parts of a series or other sentence constructions are using nouns, verbs, adjectives, etc., in the same order. There are some excellent examples here:

Learning economics is like having you own crystal ball. The more you understand it as a social science, the more you understand how our economy and political system works. I say like a crystal ball, because you will be able to see things that other people
47. ## Chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−4 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free
48. ## Chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−4 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free
49. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−2 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free
50. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−4 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free
51. ## Chemistry

Rank these to highest pH to lowest pH: NH3, KOH, Ca(OH)2, HBr, HBrO I put these in the same order for highest pH to lowest but still get it wrong.
52. ## Chemistry

Rank the following molecules in order of increasing boiling point. NH3, CaCl2, Ar, CO, HF This is what I have, am I correct or on the right track? CaCl2, HF, NH3, CO, Ar

54. ## chemistry

Arrange the following aqueous solutions in order of decreasing freezing points (lowest to highest temperature): 0.10 m Na3PO4, 0.35 m NaCl, 0.20 m MgCl, 0.15 m C6H12O6 and 0.15 m CH3COOH.
55. ## Chemistry

Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2-octanol; b) 1,3-dichlorobenzene; c) tert-butylcyclohexane; d) benzoic acid
56. ## Chemistry

Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2-octanol; b) 1,3-dichlorobenzene; c) tert-butylcyclohexane; d) benzoic acid
57. ## science

The lanthanide metal europium (Eu) forms a crystalline solid with a cubic unit cell of edge length 3.854 Å. The density of europium is 4.408 g cm-3. The crystal structure of solid europium is a. body-centered cubic b. simple cubic c. face-centered cubic
58. ## Analytical CHM

Rank the following items in order of accuracy: volumetric pipet, beaker,buret,erlenmeyer flask,volumetric flask
59. ## Organic Chemistry

Rank the following compounds in order of increasing acidity. a. H2O, H3O-, Ho- == HO-, H2O, H3O- b. NH3
60. ## Chem

Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical make-up composition but a different structure, hence, different properties c. the same properties but with different chemical
61. ## Chemistry

How do I know the order of placing dots on the lewis structure? Please give an example.
62. ## Chemistry

Choose the true statements regarding the charge-minimized Lewis structure(s) of the BrO2- ion. (selet all that apply) a. There is only one charge-minimized structure for this ion. b. There are two charge-minimized resonance structures for this ion. c. The
63. ## chemistry

Arrange the following in decreasing order of their massess . a. 2.5 moles of water. b. 3.012×10×24 c. 25 g of water
64. ## CHEMISTRY

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers
65. ## CHEMISTRY

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers
66. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers
67. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−3 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers
68. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers
69. ## Calculus

The fuel efficiency, E, in litres per 100 km, for a car driven at speed v, in km/h is E(v)=1600v/(v^2+6400) a)If the speed limit is 50 km/h, determine the legal speed that will maximize the fuel efficiency. Could someone explain to me why the legal speed
70. ## chem

Rank these in order of increasing freezing points: C2H6O, NaCl, NaSO4, C12H22O11 I suggest that you look them up. You will have to make an assumption at the isomer of the organic compounds that is intended, but it will not make a difference to the ranking.
71. ## chem hw

Assuming equal concentrations, rank these aqueous solutions by their freezing point: Li2SO4, Li3PO4, SnCl4, NH4Br. (from highest freezing point to lowest freezing poinT) Is the order Li3PO4, Li2SO4, SnCl4, and NH4Br???????? If not what is the correct
72. ## Science

Silicate materials have a variety of crystalline structures, even though they are made from the same building blocks --- silica tetrahedra. what factors do you think affect the structures of silicate minerals as they are forming? please help
73. ## management structures

Give an example of how each of the following management structures affects the day-today work of an organization. 1. Departmentalization- 2. Matrix Organizations 3. The Project Team 4. The Collegial Model
74. ## Chemistry

Two isomers have the same formula but different structures: Co(H2O)5SCN, CO(H2O)5NCS. The 5's mean 5-H20's. Draw each of these structures and explain the difference between the two? I don't even know where to begin. I appreciate any kind of help at this
75. ## Chemistry

Generally, the solubility of gases in liquids increase with a-decreasing temperature & increasing pressure b-increasing temperature & decreasing pressure c-decreasing temperature & decreasing pressure d-increasing temperature & increasing pressure
76. ## math

If a student's percentile rank in a class of 400 students is 87, find the student's class rank.
77. ## Math

If a student's percentile rank in a class of 400 students is 87, how do I find the student's class rank.
78. ## physics

The objects listed below are placed at the top of a ramp, and roll down to the bottom without slipping. Assuming that there is no air resistance, rank them in order from fastest average rolling speed to slowest. Penny, large marble, basketball, and hula
79. ## Physics

The objects listed below are placed at the top of a ramp, and roll down to the bottom without slipping. Assuming that there is no air resistance, rank them in order from fastest average rolling speed to slowest. Basketball Bowling Ball Penny Wedding Ring
80. ## Healthcare Management

Which of the following statements about reorganization is true? A. Organizational structure must be changed to accommodate changes in strategy. B. Managers shouldn't waste their time reevaluating organizational structure and processes. C. An organization's

A 130 kg astronaut (including space suit) acquires a speed of 2.80 m/s by pushing off with his legs from an 2000 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the
82. ## Physics

A 120 kg astronaut (including space suit) acquires a speed of 3.00 m/s by pushing off with his legs from an 1900 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the
83. ## Physics

A 160 kg astronaut (including space suit) acquires a speed of 2.20 m/s by pushing off with his legs from an 1950 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the
84. ## Physics

A 160 kg astronaut (including space suit) acquires a speed of 2.20 m/s by pushing off with his legs from an 1950 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the
85. ## chemistry

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−6 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers
86. ## Fraction word problem

A structure is made out of foam cubes that are each 1/4 foot tall. The height of the structure is 8 feet. How many cubes were used to build the structure? Is this how we write 8➗1/4=8

Molecular Orbitals 1.Which of the following diatomic species are paramagnetic and which are diamagnetic? a.C2^2+ b.B2^2- c.Li2^- 2.Arrange the following in order of decreasing stability. a.F2 b.F2^- c.F2+ I know that as you go to higher subshells like from
88. ## chemistry

Given the compounds H2S, NH3, and SO2. Determine the order o boiling points. Rank them from highest to lowest boiling point. Give an explanation for your ranking by the electronegativity data a by type of intermolecular force.
89. ## algera

The fuel efficiency for a certain midsize car is given by E(v) = −0.018v^2 + 1.440v + 3.9 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the
90. ## Algebra

The fuel efficiency for a certain midsize car is given by E(v) = −0.017v^ + 1.462v + 3.5 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the
91. ## physics

Two Astronauts A and B are working in the space shuttle in the space.Suddenly the hammer falls from the hands of astranaut in space. who will hear most sound,Astranonaut A or B .and why?
92. ## Sociology

Analyze the functions of the family by addressing the ideal family structure as it compares to real family structures. In essence, compare the ideal and real culture of the American family.
93. ## Physics

A CsCl (cesium chloride) salt crystal is built from the unit cells shown in the figure below. Cl− ions form the corners of a cube and a Cs+ ion is at the centre of the cube. The edge length of the cube, which is called the lattice constant, is 0.4
94. ## Chemistry - Order of Bond Polarity

Hi I am having a bit of trouble with this question CCl4 is confusing me: Qu)Rank the following compounds in order of bond polarity; HF, CH4, H2O, H2S, CCl4 Asw)lowest to highest bond polarity: CH4, CCl4, H2S, H2O, HF Is this correct? Thanks!
95. ## Chemistry

a chemist needs to order Na2B4O7. One supplier offers it in an anhydrous (without water) form, while another offers it as a hydrated crystal, Na2B4O7*10H20. if the prices from the two suppliers are the same for a 500.0-g bottle, which one would supply more
96. ## Computers (Java)

Hello -- Looking for help with an extra credit assignment to give my grade a needed boost. The program is to display a star pattern with java loops. From prof: 7. Write a program using loops to display the star pattern that follows the written description.
97. ## Computers (Java)

Hello -- Looking for help with an extra credit assignment to give my grade a needed boost. The program is to display a star pattern with java loops. From prof: Write a program using loops to display the star pattern that follows the written description.
98. ## CHEM

For a crystal with formula BaCl2.xH2O, a student conducted a gravity experiment and found out that 2.44 gram of this crystal can lost mass 0.36 gram when heated to 150 degree. Suppose water is the only reason of weight loss, what is the x value here?
99. ## Economics

Which of the following results from having a nation having conflicting economic goals? A. the nationalizing of some industries B. the need to rank choices in order of importance C. the need for economic safety nets D. government regulation of domestic
100. ## physics

A hydraulic jack is designed so that when the handle is pushed down 1 m, the piston raising the load moves up 0.015 m. IMA= 66.67 AMA= 26.67 Efficiency= 40% At this efficiency, what is the force required to lift a 5000 N weight?