# Questions Asked onJune 6, 2009

1. ## Chemistry

4Al + 3O2->2Al2O3(triangle)H= -1669kj/mol 2Fe + O2 ->2FeO (triangle)H= -822 kj/mol Determine enthalpy change?

2. ## Physics and Chemistry

What chemical phenomenon accounts for the elasticity seen in solids? covalent bond hydrogen bond ionic bond all of the above.

3. ## home economics.

state the general rules for storing clothes

4. ## Algebra

Identify the vertex and the axis of symmetry for the graph of y=5(x-2)^2 + 3. a) vertex (2,3); x = -2 b) vertex (-2,-3); x = 2 c) vertex (2,3); x = 2 d) vertex (-2,-3); x = -2 I have no idea how to solve this problem! Please help. Thank you! :)

5. ## History

I need to find a little more information about the differences between the North and South where it concerns the political and economic situation. Here is what I have: Policital, the North had an oppresive government. The South , the government, was

6. ## teaching math

Indicate whether the deductive reasoning used is an example of affirming the hypothesis or denying the conclusion. If a number is divisible by 3, then the sum of the digits of that number is divisible by 3. The sum of the digits of a number is not

7. ## critical thinking

1) It is an article of faith among some economists that the significant inventions of the contemporary world are the results of the innovative genius of big business organizations. (2) Yet in the United States, the current trend toward corporate mergers

8. ## chemistry

What is an example of a specific mixture that could be separated with simple distillation and a specific mixture for which only fractional distillation would be used? I think a methanol-water mixture could be done with simple distillation, since they have

9. ## Algebra

Use the quadratic formula to solve the equation. Give exact answers. 2x^2 + 11x - 21 = 0 a) -3/2, 7 b) 3/2, -7 c) 3/2, 7 d) -3/2, -7 I could not get any of these answers.

10. ## HUMAN RESOURCE PRINCIPLES AND PRACTICES IN HEALTH

Discuss the regulatory environment in which health care organizations operate in today's environment. Discuss the difference between the roles of HR management and Top management in regard to responsibility to assure compliance with laws and regulations

11. ## maths

A paving block is is in the shape of a prism, the area of it' cross section being 154cm^2.The prism i 17cm long ad the material from whih it is made has a density of 2.2g/cm^3. Calculate the mass of the paving block. Please can you tell me the method

12. ## Physics

longitudinal waves ->move in the ____________as the medium movement. transverse waves-> move____________to the medium movement. Waves transfer_______ without transfering_____

13. ## earth science

what is the greatest danger from volcanoes?? a. watery lava b. mud flows c. oxygen d. bulging of the earth's crust

14. ## Algebra

Which is the equation in standard form of the line that is perpendicular to 6x-8y=2 and contains (-1,4)? a) x - 4y = -17 b) 4x + 3y = 8 c) 3x + 4y = 13 d) 4x - 3y = -16 Please explain how to do this problem. Thanks! :)

15. ## crt

For some philosophers, writing is an unfortunate necessity, a means of communication that is at best irrelevant to the philosophical thought it expresses and at worst a barrier to that thought. The words in which the philosophical investigator writes up

16. ## teaching math

Indicate whether the deductive reasoning used is an example of affirming the hypothesis or denying the conclusion. If a number is divisible by 3, then the sum of the digits of that number is divisible by 3. The sum of the digits of a number is not

17. ## Critical Thinking

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion

18. ## science

If air at sea level with a temperature of 27degrees C is forced up a mountain slope and the air's dew point at the condensation level is 14degrees C, at what elevation will condensation begin?

19. ## History

I need to find a little more information between the similarities between the North and South where it consists of political and economic. Here is what I have: Political they the white men ruled the government. Economic: Farms for living, had livestock. Is

20. ## spanish

"Que te gusta mas de las peliculas de accion?" "Me gustan mas _____." a. los huracanes b. los locutores c. los anuncios d. los efectos especiales D--the special effects (sorry for the missing accent marks)

21. ## spanish

Los _____ generalmente tienen que saber hablar bien. a. locutores b. guiones c. argumentos d. derrumbes A--announcers

22. ## tissue engineering

in tissue engineering, why are fibrous fabrics or polymers important? I know that some have slow degradation and some polymers can be controlled in certain conditions, but I want more detail.

23. ## Algebra

This question was just some random one on a math sheet. There were no directions, and I"m not sure what to do. 5(x-3)=? Thanks!

24. ## histidine basic/nonbasic nitrogens

For the amino acid histidine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded

25. ## Math

I just have a quick question regarding this question: Simplify. State any restrictions on the variables. log(x^2+7x+12)-log(x^2-9) my answer is log[(x+4)/(x-3)] which is correct. However, for the restrictions, I believe that they are: x>3 and x3. When I

26. ## Math/Economics

A zero-coupon bond matures for \$1,000 in exactly 12 years' time. If you paid \$385.63 today for the bond, what average yearly rate of return will you earn?

27. ## english

which one is correct Please send an invitation to Bob and she or Please send an invitation to Bob and her.

28. ## math

Indicate whether the deductive reasoning used is an example of affirming the hypothesis or denying the conclusion. 8 If a number is divisible by 3, then the sum of the digits of that number is divisible by 3. The sum of the digits of a number is not

29. ## science

is the Paricutin volcano in mexico still active??

30. ## Algebra

Use the formula C=2pi to find the radius, r, for a circle with a circumference of 160 centimeters. Round your answer to the nearest hundredth. a) 50.96 cm b) 28.08 cm c) 25.48 cm d) 80.00 cm When I tried to solve this problem, I never got any of these

31. ## Critical Thinking

In 1976 a powerful earthquake hit the city of Tangshan, China. Scientists had failed to predict the earthquake. If people had paid attention to the unusual animal behavior that preceded the earthquake, however, they would have known it was coming. Animals

32. ## home economics

reasons for storing clothes in the home

33. ## spanish

"Que dijeron Uds. despues de escuchar el comentario sobre la pelicula nueva?" "_____ que el locutor tenia razon." a. dijimos b. decimos c. deciamos d. dijeron can you please explain the meaning of the quesiton and each answer choice. thanks a lot Jiskha

34. ## spanish

"Te gusta mucho actuar, verdad?" "Claro que si! Quisiera hacer _____ en un programa de television." a. los efectos especiales b. el papel principal c. el director d. el guion B-- main part

35. ## spanish

Los actores usan _____ para aprender su papel a. un guion b. un director c. una escena d. unos efectos especiales A--script

36. ## spanish

"Quieres ver las noticias locales esta noche?" "No. Prefiero ver las _____ para recibir informacion sobre los que pasa en otros paises. a. principales b. basadas c. excelentes d. internacionales can you please explain the meaning of the question

37. ## Math Statistics

An investigational drug study is being conducted. The initial screening phase needs to include enough people so that the final (approved) group has at least 10 patients. The probability of a person being approved for the study is .80. what initial sample

38. ## Algebra

Solve by factoring: x^2+2x+4x+8=0 Thank you!

39. ## Latin

Is the imperative for -ere verbs like docere doce? Thanks.

40. ## Literature quick question

Can someone help me or give me a link to where I can find chapter summaries, or book notes for the story You Don't Know Me by David Klass. Thanks

41. ## chemistry

what ionic compounds could you form from the following? Sodium Calcium Neon Phosphorus Chlorine i have NaCl, CaCl2, Na3P, and Ca3P2 is that all and can neon be used?

42. ## ecology

I am not very good in science, and math. However, I do very well in english, writing, puncuation, and grammar. Here is my question. Do you believe humans can harvest forest resources in an enviromentally friendly way? Or, should national forest be left in

43. ## math

Indicate whether the sequence is arithmetic, geometric, or neither. 6, 30, 150, 750, 3750, . . .

44. ## Unknown

Can someone please help me with crt 205 week 5 assignment ( Identify Fallacies) i have been working on this for hours in now will be late posting it for feed back and i will loose points SO PLEASE HELP ME i will glady appreciate the tips

45. ## commercial

prepare a trial balance for sonia in the year of 2000 and the total amount of 21540 dollars

46. ## History

I need some help and keep finding other things. What political similarities was present with the Early Northern and Southern Colonies? Thanks.

47. ## History

Was the Early Northern Protestants or Puritans? I have read conflicting articles on this. Thanks.

48. ## science

which of the following is formed from molten rock that contains large amounts of gasses?? A: Rhyolite B: granite C:basalt D: pumice

49. ## critical thinking

The amount of water needed daily by plants for photosynthesis, cell growth, and cell maintenance is very small, and yet plants require large volumes of water in order to live. It is estimated that over 90 percent of the water absorbed by plants is lost

50. ## American Government

What is double security?

51. ## critical thinking

The great French historian Jules Michelet (1798-1874) sympathized with the French Middle Ages and with the Revolutionary epoch in France, yet he wrote his best work on the despotic French monarchy, which he despised.

52. ## crt

Officials are considering placing the sturgeon on the endangered species list. If such an action is taken, ships, including those that carry goods and produce, will not be allowed to travel on the large rivers in our region that serve as breeding grounds

53. ## Statistics

10, 12, 16, 17, 20 I'm having a problem figuring out how the answer is 64... how do I get that because I have to show my work Thanks for your help

54. ## fin 200 financial question

As an investor I wounld mostly be interested in the end result - profitability. Will the money I invest be put to good use and give me a decent return in an acceptable period of time?

55. ## Ethics

Please help with an assignment: I need to pick 5 articles from the Washington post, each addressing a moral issue. Each essay needs to have one moral issue question based on the following topics. 1. utilitarianism 2. Moral Rights 3. Distributive Justice 4.

56. ## spanish

"Por que no podian encontrar los policias a los criminales?" "Porque los criminales _____ bien!" a. cambiaron b. hacian el papel c. se escondieron d. destruyeron C--to hide (sorry for the missing accent marks)

Why does a multicellular organism need specialized cells and why their apperances are different?

58. ## spanish

Cuando un policia investiga un crimen, quiere saber todos los _____. a. ladrones b. galanes c. hechos d. vaqueros C--facts

59. ## spanish

"Te gustan los programas de compras?" "Generalmente, no. Prefiero tener mas _____ antes de comprar algo." a. informacion b. violencia c. fracasos d. argumentos A--information

60. ## spanish

"Quien es el personaje principal de la pelicula E.T.?" "Es _____." a. un monstruo b. un extraterrestre c. un director d. un cientifico B--alien

61. ## Statistics

An investigational drug study is being conducted. The initial screening phase needs to include enough people so that the final (approved) group has at least 10 patients. The probability of a person being approved for the study is .80. what initial sample

62. ## spanish

"Que paso anoch en Hawaii?" "Hubo una _____ violenta que destruyo muchos edificios." a. terremoto b. erupcion c. direccion d. actriz A--storm

63. ## spanish

"Que les dijiste a tus amigos sobre la pelicula de extraterrestres que vimos anoche?" "Les _____ que era demasiado exagerada." a. dijeron b. dijo c. dije d. digo please explain the meaning of the question and how each choice fits in the blank thanks

64. ## spanish

It will be very helpful is someone can show me how this would be pronounced: Marianela Pablo? Si, Marianela. Por que tan triste, mi amor? Es que...Bueno, es que yo siempre salgo a almorzar a las doce. Tu sales un poco mas tarde, no? Por que me haces esa

65. ## Algebra

Factor: 2x^4-4x^3y^2+8x^2y Thanks for the help!

66. ## math

how do u factor 7x^3+28x^2-35x ? thanx.

what is the purpose of testing variables I am stuck, can you help me?

68. ## math

wouldn't 503 to base 5 be 2003 there are 20 sets of 5 with no extra sets of 5 and 3 left over correct

69. ## amino acids

For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded

70. ## human resources

What are some advantages and disadvantages of delegation, Why do some managers choose not to delegate?

72. ## Pre-Algebra

I'm stuck on these two problems; can someone show me how to solve them step-by-step? Thanks 1.A baseball diamond is a square 90 ft on each side. How far is it diagonally from home plate to second base? 2.An equilateral triangle has sides 10 units long.