Questions Asked on
June 30, 2010

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
asked by Judy 
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
asked by Taylor 
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?
asked by Jay 
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
asked by Gary 
chemistry
for SCN if SC 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?
asked by Jin 
equilibrium constant
WHat is the accepted equilibrium constant for ferric thiocyanate [FeSCN2+]? I can't find a reliable number anywhere. Thanks in advance.
asked by CHeem 
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
asked by Superman 
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)
asked by M.R. 
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?
asked by SL 
Physics
Using Planck’s constant as h = 6.63 E34 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 E27 kg. Remember to identify your data, show your work, and report the answer using the correct number of
asked by Haley 
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
asked by Sarz 
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?
asked by Mary 
consumer math
Jan borrowed $1,200 at 11.5% interest for three months. How much does she have to repay under a singlepayment plan?
asked by gabe 
chemistry
he Fe(ox)33– complex ion creates an emerald green solution when dissolved. The observed solution color of the complex indicates the size of o is: A. large. B. small. C. in between. D. inconclusive, more information is needed. The observed solution color
asked by .... 
science
what volume of benzene ( C6H6 d=0.88g/ml molar mass = 78.11) is required to produce 1.5*10^3 kj of heat
asked by na 
Individual Income
1. Ann Bolen's husband died last year. Ann maintains a household where she and her 8yearold daughter reside for the tax year. On her tax return, she properly claims a dependency exemption for her daughter. For the current year, Ann should file her tax
asked by Kheang 
Chemistry
25.0 mL of 0.100 M acetic acid (Ka= 1.8 x 10^5) is titrated with 0.100 M NaOH. Calculate the pH after the addtion of 27.00 mL of 0.100M NaOH. my work CH3COOH + H2O H3O^+ + CH3COO^ 25mL x 0.100 mmol/ml = 2.5mmol CH3COOH 27mL x 0.100 mmol/ml = 2.7mmol NaOH
asked by Anonymous 
Chemistry
An excess of zinc metal is added to 50.0 mL of a 0.100 M AgNO3 solution in a constantpressure calorimeter. Assuming that the density of the solution is the same as for water, calculate the mass of the solution.
asked by Haley 
american government
Voter registration in the United States: a)was introduced as a means of keeping white males without property from voting b)applies to voting in general elections but not primary elections c)has been a device by which official have discouraged some groups
asked by vedrana 
English
Revise the following sentences to create parallel constructions. (Question) Some students hate math; some students dislike math, and math is liked by other students. (my answer) Some students hate math, some dislike math, and some like math. every way I
asked by Rita 
Geometry
I have a pizza. The radius is 10 inches long. The pizza was cut into 16 equal slices. When 1 slice was left, my sister and I both wanted it, so we agreed to cut it in half, but I like the crust more than she does, so we decided to cut it the "other way."
asked by Kathy 
Algebra I
Pump A, working alone, can fill a tank in 3 hours, and pump B can fill the same tank in 2 hrs. If the tank is empty to start and pump A is switched on for one hour, after which pump B is also switched on and the two work together, how many minutes will
asked by Meredith 
English 101
Sports fans may disagree about whether going to baseball games or to watch football is more fun, but few people can ignore the importance of sports in America. A This sentence is parallel. B This sentence is not parallel. Some sports fans argue endlessly
asked by Deedward 
Algebra 1
what's the LCM of: 2r1 , r+4
asked by Ana 
Calculus
If a ball is thrown into the air with a velocity ofc 40ft/s,its height in feet after t seconds is given by y=40t16t^2. Find the velocity when t =2. Could you please show the steps
asked by Eileen 
chemistry
The Fe(ox)33– complex ion creates an emerald green solution when dissolved. The observed solution color of the complex indicates the size of o is: A. large. B. small. C. in between. D. inconclusive, more information is needed. The observed solution color
asked by Jin 
halflife
ok so i got... the half life of carbon14 is 5730 years, the relation c+(1/2)^ N/5730 is used to calc. the concentration, c, in parts per trillion remaining n years after death determine the carbon concentration in a 11460 year old bone. please help :)
asked by bubb 
Algebra
Library Research Assignment Please help with Discussion board problem Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the
asked by Mayl 
AP chemistry
If 5.00 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield? 2 NH3(g) + 3 O2(g) + 2 CH4(g) 2 HCN(g) + 6 H2O(g)
asked by Kelli 
Calculusimplicit differentiation
How do I find the normals to the curve xy+ 2x  y = 0 that are parallel to the line 2x + y = 0
asked by John 
Chemistry
A buffer prepared by mixing equal amounts of the salts Na2HPo4 and NaH2PO4 to give a total phosphate concentration of 0.1M. What is the concentration of Na ions? I believe it is 0.3M but am having trouble understanding why when I write out the dissociation
asked by Richard 
Science
Two equal and opposite forces of 5.0 N act on an object. What is the unbalanced force on the object?
asked by Mary 
halflife
ok so i got... the half life of carbon14 is 5730 years, the relation c+(1/2)^ N/5730 is used to calc. the concentration, c, in parts per trillion remaining n years after death determine the carbon concentration in a 11460 year old bone. please help :)
asked by bubb 
Calculus
How do I find the normals to the curve xy+ 2x  y = 0 that are parallel to the line 2x + y = 0
asked by John 
alg
multiply: 15a^2 / 14 * 7 / 5a a) 3a^2 / 2 b) 6a c) 21a / 2 d) 3a / 2
asked by anth 
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
asked by Superman 
math
what does term "factor each expression" mean in 8th grade math?
asked by girly t. 
childcare
I have to do a lesson plan on diversity for my class and im not sure what kind of lesson plan to do and i cant find any websites that help me can some please give me suggestions on diversity
asked by karrie 
quadratics
a firework is modelled by the relation h=4.9(t9)^2+170 h=height above ground in metres and t=time in seconds what are the coordinates of the vertex of this parabola?
asked by kyle 
Geometry
Which is the hypotenuseangle theorem? ________________________________________ A. If the hypotenuse and an acute angle of a right triangle are congruent to the corresponding parts of another right triangle, then the triangles are congruent. B. If the
asked by Superman 
math
There are five girls and five boys at a party. In how many ways can they be seated in a row of six?
asked by Leslie 
math
x+3=(2x+2)
asked by lisa 
Calculus
Find the Limit lim as t approaches 1 of (t^3+5t^213t+7)/(t^33t+2)
asked by Kelly 
chemistry
How much ammonia is produced if 1.80 m3 of hydrogen reacts with 0.5m3 of nitrogen? Also state which reagent is in excess and by how much? Question is related to the Haber process. Please can anyone answer this for me by 02 July 2010. Thanx
asked by Anonymous 
Chemistry
How much ammonia is produced if 1.80 m3 of hydrogen reacts with 0.5m3 of nitrogen? Also state which reagent is in excess and by how much? Question is related to the Haber process. Please can anyone answer this for me by 02 July 2010. With all equations.
asked by Matt 
Math
Find a polynomial of degree 3 with roots 3, 4  i. Which one is it? A.x3  10x + 15 B.x3 + 15x2 + 4x  50 C.x3  11x2 + 41x  51 D.x3 + 24x2 + 3x  12
asked by Paul 
math
Find the balance in Myra's account after 1 year if her bank paid 5.75% simple interest on her deposit of $6,000
asked by ange 
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?
asked by Liz 
biology
the observations that led to the formation of the cell theory occured whithin a 17year period.why do you think that more than one scientist made critical observations about cells within this period?
asked by amanda 
biology
what general statement about the conditions necessary about enzymecatalysed reactions can be written as a result of the experiment To Investigate the action of an Enzyme?
asked by Mary 
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?
asked by Todd 
math
in a skew symmetric, how do we explain that its diagonal entries has to be all 0 without giving examples to support it
asked by eng 
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?
asked by savey 
Organic Chemistry
Which of the following minor products could NOT arise from the halogenation rxn below? 2methylpropane + Br2 > 1bromo2methylpropane + HBr + minor products a) 2,5dimethyl hexane b) 2bromo2methylpropane c) 1,3dibromo2methylpropane d)
asked by Sarz 
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
asked by Linda 
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
asked by Sam 
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.
asked by Tamir 
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
asked by Pomi 
business
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
asked by flame 
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
asked by Debi 
business ethics
which of the following is NOT one of the key requirements for auditor independence?
asked by Tu'Lyishus 
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
asked by 
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.
asked by Alicia 
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.
asked by Superman 
alg
simplify: 10^C6 a) 60 b) 210 c) 151,200 d) 1,000,000 c
asked by sean 
Math
Determine the slope of the tangent line to the curve y=2x^33x^2+1 at the point (1,0)
asked by Eileen 
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
asked by rfvv 
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.
asked by Dborah 
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?
asked by Jin 
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
asked by vedrana 
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
asked by Heather 
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?
asked by Francis 
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
asked by Cassandra 
learning and memory
what are examples of conditioned stimuli, unconditioned stimuli, conditioned response, and unconditioned response?
asked by denise 
business
Construction of a new plant: Architect's fees $ 4,000 Cash paid for land and rundown building thereon 120,000 Removal of old building 18,000 Salvage from sale of old building parts (4,000) Survey to site the new building 800 Legal fees for title search
asked by aa 
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?
asked by Judy 
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?
asked by Todd 
Statistics
Using the major League Baseball Data set available through the "Data Sets" lin in the materials section, answer the research question of whether the number of wins of a team can be explained linearly by the size of stadium, ERA, and stolen bases. Prepare a
asked by Melissa 
health
When comparing the flow of lymph in the lymphatic system with the flow of blood in the circulatory system, it can be said that the lymphatic system also A. uses a pump. B. contains fluid that travels in only one direction. C. uses valves to prevent
asked by Linda 
Science
Distance covered per unit of time is called what.
asked by Mary 
physics
Distance covered per unit of time is called _________.
asked by Mary 
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
asked by Superman 
american government
Why has the Commerce Clause been used to target agriculture, transportation, finance, labor relations and the workplace?
asked by Anonymous 
american government
All of the following are characteristcs of a realigning election EXCEPT: a)sharp divisions between the parties b)major policy initiatives by the winning party c)a very close electoral result d)the disruption of the existing political order ID C CORRECT
asked by vedrana 
alg
Dwanye has 18 shirts hanging in his closet. He is going to donate 4 of them to a clothing drive. How many combinations of shirts can Dwanye use for his donation? a) 73,440 b)72 c) 104,976 d) 3060 b
asked by sean 
math
multiply 7(2a4)
asked by hally 
alg
which expression represents the sum of the following? 7 / a  1 + 3 / 2a  2 a) 10 / 3a  3 b) 17 / 2(a  1) c) 17 / 2(a 1)^2 d) 10 / 2a  2
asked by sean 
English
1. Blue helps with headaches. (What is the meaning of 'with' in this sentence?)
asked by rfvv 
chemistry
how do you know which resonance structure is more stable according to the energy? does higher energy mean more stable?
asked by Jin 
BIOLOGY
what is the result if an enzyme reacts with crushed tissues?
asked by Mary 
Geometry
I have a 4545 special right triangle who's hypotenuse is 12, how do I find the other two side lengths?
asked by Ana 
Finance
You are the supervisor for a large technologybased corporation. One of your subordinate managers, Carly, is heading up a project for a new system that is scheduled to market on the 1st of the year. It is August and things are not progressing at the pace
asked by mee 
English grammar
How to phrase this sentence in a better way? "This is to ensure stable and high level performance in the branch¡¯s developing stages."
asked by B. 
Phy
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?
asked by Todd 
english
Which sentence below contains a dangling modifier? Finding a place to sleep, the bed was comfortable. The bed was a comfortable place to sleep. Finding a place to sleep was difficult. Finding a place to sleep, the children thought the bed was comfortable
asked by Anonymous 
Math
I need to describe what the graph of interval [4, 10] looks like. I have a really hard time explaining math in words.
asked by C.J 
alg
X Y 15 N 18 8 1/3 24 6 1 / 4 The table above represents an iverse vartiation. What is the value of N? a) 15 b) 10 c) 12 1 /2 d) 5 1 /2
asked by anth 
business ethics
which instance is an example of internal mechanisms working to prevent criminal behavior?
asked by Tu'Lyishus 
health
When comparing the blood smears of patients with intact spleens to those of patients without spleens, the blood smears of patients without spleens will likely reveal A. many more fragile and old erythrocytes. B. many more lymphocytes and monocytes. C. many
asked by Jackie 
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
asked by Jackie 
English
I forgot to include the following sentences which are part of the same reading comprehension. Thank you very much. 8) Why couldn't they fly to Merida? Because their seats hadn't been booked. 9) Does the tourist regret going to Merida? Yes, he/she does. He
asked by Franco 
intermediate algebra
3(57)^8 divide 4
asked by David 
Science
A car is moving down a freeway in a straight line at a constant rate of 25 m/s. What is its acceleration?
asked by Mary 
Algebra 1
Is this correct? (3m^2/2n )* (n^2/12) = m^2*n/8
asked by Ana 
Algebra 1
Is this correct? (3m^2/2n )* (n^2/12) = m^2*n/8
asked by Ana 
alg
find the LCD for the following rational expressions. 3 / (x^2  2x) + 1 / 2x (x^2  5x + 4) a) ( x  1) (x  4) b) (x  1)^3 (x  40 c) (x  1) (x + 4) d) (x  1)^2 (x  4) did i write it the correct way
asked by sean 
Algebra 1
What's the answer to [(x2)(x+2)/x(8x+3)]*[2(8x+3)/(x2)] is it 2x+4/x or 6?
asked by Ana 
Math
P/3  3P/8 =
asked by Angela 
Percentages
20 is what percentage of 372
asked by John 
history
What were John !@#$%^&ennedy's key legislation?
asked by kelly 
math
8m+n=12 m5n=22 solve using substitution method
asked by Anonymous 
geometry
What are corresponding sides?
asked by Alisha 
biology
what would occur if an acid is mixed with an enzyme?
asked by Mary 
chemistry
how do you know which resonance structure is more stable according to the energy? does higher energy mean more stable?
asked by Judy 
QUADRATICS.
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?
asked by kyle 
business ethics
Select the option that can be used to illustrate a utilitarian argument concerning ethical issues in marketing.
asked by Tu'Lyishus 
MATH PERCENTAGES
HOW TO FIND THE PERCENT SAVED DIFFERENCE OF 310,951.00 ALLOWED 214,546.60 USED  96404.40 TOTAL SAVED
asked by ELTINYO VT 
algebra 2
if (x8)(x+5)=0 what are 2 possible values of x
asked by uniqua 
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
asked by Franco 
health
The Papanicolaou test is used to detect A. conization in situ. C. minimal cervical dysplasia. B. protein in the urine. D. colonic polyposis Would this be A. Conization in situ?
asked by Penny 
health
what happens when a patient is not aware of their rights?
asked by cortez