# Questions Asked onJune 30, 2010

1. ## chemistry

for a homework problem it says to build both the high spin and low spin complex ion and it gives me spin of Fe (ox)3 3- low high I don't understand what high spin and low spin is and I don't know what Fe (ox)3 3- is suppose to be

2. ## Chemistry

Calculate Delta H for 4NH3 + 5O2 --> 4NO + 6H2O using: N2 +O2 --> 2NO DH= -180.5 kJ N2 + 3H2 --> 2NH3 DH= -91.8 kJ 2H2 + O2 --> 2H2O DH= -483.6 kJ

3. ## Physics

Two vectors A. and B have magnitude A = 3.00 and B = 3.00. Their vector product is A x B= -5.00k + 2.00i. What is the angle between A and B?

4. ## Physics

A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 3.5 s later. How high is the cliff

5. ## chemistry

for SCN- if S-C has a bond order of 1, S=C and C=N have bond orders of 2, and C triple bond N hasa bond order of 3, ... Do the bond length in SCN- point to one resonance structure over the other? Which one?

6. ## equilibrium constant

WHat is the accepted equilibrium constant for ferric thiocyanate [FeSCN2+]? I can't find a reliable number anywhere. Thanks in advance.

7. ## Geometry

Which statement is true? A. The altitude drawn to the leg of a right triangle forms two triangles that are similar to each other and to the given triangle. B. The altitude drawn to the hypotenuse of a right triangle forms two triangles that are similar to

8. ## Chem 1C

What is the electron configuration of an isolated Fe atom (no ligands bound to it)? (Use notation like [Ne]3s^23p^6 for your answer) B. What is the electron configuration of an isolated Fe3+ cation? (Use notation like [Ne]3s^23p^6 for your answer)

9. ## geometry

the base of an isosceles triangle is 18 centimeters long. The altitude to the base is 12 centimeters long. What is the approximate measure of a base angle of the triangle?

10. ## Physics

Using Planck’s constant as h = 6.63 E-34 J*s, what is the wavelength of a proton with a speed of 5.00 E6 m/s? The mass of a proton is 1.66 E-27 kg. Remember to identify your data, show your work, and report the answer using the correct number of

11. ## Organic Chemistry

Which hybrid orbitals would NOT be possible in electrically neutral molecules containing the elements shown? 1. sp3/Al and H 2. sp2/B and F 3. sp3/O and F 4. sp2/N and O 5. sp/C and H

12. ## biology

in a vacuum the coloured particles of potassium manganate(vii)would move very quickly in water. why would it move slow at room temperature?

48. ## Chemisrty

If you were balancing a chemical equation that contained the substance sodium nitrate, NaNO3, composed of a sodium ion, Na+1, and a nitrate ion, (NO3)-1, what number or numbers could you change in order to balance the equation?

49. ## biology

the observations that led to the formation of the cell theory occured whithin a 17-year period.why do you think that more than one scientist made critical observations about cells within this period?

50. ## biology

what general statement about the conditions necessary about enzyme-catalysed reactions can be written as a result of the experiment To Investigate the action of an Enzyme?

51. ## Physics

You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the arrow has gone straight upward to a height of 32.0 m above its launch point. What is the initial velocity and how long did it take for the arrow to reach 16.0 m above the launch point?

52. ## math

in a skew symmetric, how do we explain that its diagonal entries has to be all 0 without giving examples to support it

53. ## Physics

An automobile with a mass of 100kg is moving north on a level straight highway with a constant velocity of 80km/h. What is the unbalanced force acting on the automobile?

54. ## Organic Chemistry

Which of the following minor products could NOT arise from the halogenation rxn below? 2-methylpropane + Br2 -> 1-bromo-2-methylpropane + HBr + minor products a) 2,5-dimethyl hexane b) 2-bromo-2-methylpropane c) 1,3-dibromo-2-methylpropane d)

55. ## health

When comparing hemodialysis and peritoneal dialysis, it can be said that A. hemodialysis takes longer than peritoneal dialysis. B. peritoneal dialysis involves the removal of blood from the patient. C. hemodialysis is a step closer to the need for

56. ## Algebra

Hi, Any help on this would be very much appreciated. The graph y=3x^2+6x+9 is a parabola, I need to use algebra to find the equation of the axis of symmetry, I then need to use this information to find the coordinates of the vertex. Any ideas? Many thanks

57. ## Geometry

Hello, can someone help me with the following? I don't quite understand it 'Write the hypothesis, the conclusion, and the converse of the conditional statement' If R =180 Hypothesis_________ Conclusion_________ Converse___________ Thanks in advance.

58. ## Algebra

In a certain soccer league, each of the five teams plays every other team in the league exactly three times each season. How many games are played in total in one season? a) 15 b) 24 c)30 d)60 e)120

Can anyone help me with this, i spent 1 hour trying to search this on google but nothing pops up. This is about self monitoring blood glucose at home who donated the startup costs(it would be great to include the amount) for development and prodution of

60. ## physics

During a particular thunderstorm, the electric potential between a cloud and the ground is Vcloud - Vground = 2.9 x 108 V, with the cloud being at the higher potential. What is the change in an electron's potential energy when the electron moves from the

which of the following is NOT one of the key requirements for auditor independence?

62. ## math

Describe a simple process for using rates and unit prices that might help someone who is having difficulty understanding these concepts. Include either an example from the text or one of your own examples to explain the solution process. I need help

63. ## Communication and Gender Studies

How Could this dilemma be resolved?: A porcupine is looking for a place to live in the winter. A family of moles invites the porcupine to stay with them. But after a while, they discover that they are constantly being pricked by the porcupine's quills.

64. ## GEOMETRY

Which of the following are measurements of the sides of a right triangle? ________________________________________ A. 10, 8, 6 B. 13, 12, 5 C. 26, 24, 10 D. all of the above IDK HOW TO PUT THEM N2 THE PATHAGOREAM THEOREM.

65. ## alg

simplify: 10^C6 a) 60 b) 210 c) 151,200 d) 1,000,000 c

66. ## Math

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

67. ## English

1. A rainbow is an arch of seven different colors, red, orange, yellow, green, blue, indigo and violet. (is this grammatically correct?) 2. What is the color of the tulip? 3. What's the tulip's color? 4. It's pink. 5. It's the color pink. 6. It's the pink

68. ## math

What can be concluded about a rectangle's width if the ratio of length to perimeter is 1 to 3? Make some sketches and explain your reasoning.

69. ## chemistry

how do you know which bonds have a more pie bonding character than the other bond? and how do you know if it point to one resonance structure over the others?

70. ## american government

Public opinion is ordinarily used in reference to whole society.This perspective is: a)accurate,since Americans are one people and indivisible b)less accurate than a view of public opinion based on the majority,since the political system operates on the

71. ## Math

How do you convert a number to whatever base it indicates? For example: convert 252 base six to base five. I have tried posting for my teacher to help me, but he doesn't seem to get what I am asking. Can someone please explain the process and not just the

72. ## Physics

Two vectors A and B have magnitude A = 3.00 and B = 3.00. Their vector product is A x B= -5.00k + 2.00i. What is the angle between A and B?

73. ## English

pronoun antecedent agreement how can you rephrase this sentences into a more meaningful one. I really need this. Thank you for your help. :) 1. Before she could to her mother, she fainted. 2. Pamela bought a bracelet for her sister which she liked very

74. ## learning and memory

what are examples of conditioned stimuli, unconditioned stimuli, conditioned response, and unconditioned response?

111. ## math

8m+n=12 m-5n=22 solve using substitution method

112. ## geometry

What are corresponding sides?

113. ## biology

what would occur if an acid is mixed with an enzyme?

114. ## chemistry

how do you know which resonance structure is more stable according to the energy? does higher energy mean more stable?

so given the relation y=34(1.04)^x state the initial value and also is this relation growth or decay? how do you know?

Select the option that can be used to illustrate a utilitarian argument concerning ethical issues in marketing.

117. ## MATH PERCENTAGES

HOW TO FIND THE PERCENT SAVED DIFFERENCE OF 310,951.00 ALLOWED 214,546.60 USED ----------- 96404.40 TOTAL SAVED

118. ## algebra 2

if (x-8)(x+5)=0 what are 2 possible values of x

119. ## English

Thank you vey much for helping me! I still have some doubts about the use of passive and reported speech.I also hope you can check the following reading comprehension. 1) I had lunch at five. Lunch was had at five?? 2) "How do you do?" She asked me how I