Thursday

October 27, 2016
Total # Posts: 1,285

**organic chemistry**

Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions, even through nitration is an electrophilic aromatic substitution reaction. EXplain.

*December 29, 2010*

**organic chemistry**

In the formation of diacetylferrocene, the product is always the one in which each ring is monoacetylated. Why is no diacetylferrocene produced in whcih both acetyl group are on the same aromatic ring?

*December 29, 2010*

**organis chemsitry**

what is the main structural feature of the azo dyes that causes them to be colored compounds.

*December 29, 2010*

**Organic chemistry**

1. In in experiment, sodium bisulfite solution is added at the end in order to destroy the unreacted bromime. What reaction is occuring here? Is HSO3- acting as an oxiding or reducing agent? Write a balanced equation as part of your answer.

*December 29, 2010*

**Organic Chemistry**

If 3-bromo-1-propanol is treated with NaOH, a compound of molecular formula C3H6O is formed. suggest a structure for this product.

*December 29, 2010*

**physics**

Please help me to solve this problem about electic potential : An electric car accelerates for 7.0 s by drawing energy from its 290-V battery pack. During this time, 1200 C of charge pass through the battery pack . Find the minimum horsepower rating of the car.

*December 19, 2010*

**physics**

Please help me to solve this problem about electic potential : An electric car accelerates for 7.0 s by drawing energy from its 290-V battery pack. During this time, 1200 C of charge pass through the battery pack . Find the minimum horsepower rating of the car.

*December 19, 2010*

**physics**

A car starts from rest accelerates with a constant acceleration of 1.5 m/s squared. HOw far does the car move in 4 seconds?

*December 10, 2010*

**math**

What does a snowflake have to do with math?

*December 1, 2010*

**statistics**

A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9 readers is selected, compute the standard deviation of the probability distribution.

*December 1, 2010*

**sewing**

What is a wood clap used for in sewing ? thank you

*November 30, 2010*

**Math**

$102,400

*November 23, 2010*

**PLEASE HELP. physics**

For A- m1v1 = m2v2 (.015kg + .25kg)V = .015kg + 200m/s v = 11.3m/s (1/2)mv^2 = mgh so h=(1/2)(v^2)/g h = 6.5m

*November 21, 2010*

**sociology**

How can the three sociological perspectives (e.g., social functionalism, social conflict, and symbolic interaction) be used to conceptually understand social deviance?

*November 20, 2010*

**Physics**

2T=(2*pi*massproton)/(chargeproton*B) So a) B=(pi*1.67*10^-27)/(1.6*10^-19*155*10^-9) b) Doubling the kinetic energy changes the velocity. Period T does not depend on velocity so the answer is 155 ns.

*November 17, 2010*

**Physics**

lift.

*November 14, 2010*

**chemistry**

SCl2= sp3 SCl6= sp3d2 SCl4= sp3d

*November 6, 2010*

**math pleaseee help!!!!!!!!!!!!**

what is the best parking space/shortest that would take the from store 1 to store 2 and back to the car?use the following information: -the distance between store 1 to store 2 is 25 yds wide. -driveway between the sidewalk and parking lot is 10 yds this all they give me please...

*November 4, 2010*

**college**

be used to conceptually understand multiculturalism?

*November 3, 2010*

**calculus**

Let A be the bounded region enclosed by the graphs of f(x) = x , g(x) = x3 . Find the volume of the solid obtained by rotating the region A about the line x + 2 = 0.

*October 31, 2010*

**math**

how long was the dolphin show? the number of minutes is between 40 and 60. the tens digit is one less than the ones digit. the number has 4 tens. what is the answer

*October 31, 2010*

**HCR/230**

Thank you so much..but have already checked those and they did not help..

*October 28, 2010*

**HCR/230**

I do not understand it...and my book does not help. I have looked thru my book on more then one occasion and can not figure out how to answer them. So could u ever be so kind to help me in the right direction.

*October 28, 2010*

**HCR/230**

What are the basic elements of an effective medical office financial policy? In what ways do medical office procedures support financial policies? What are the consequences when office procedures do not support the financial policy? What recommendations, strategies or tools ...

*October 28, 2010*

**math**

i need help that's why im on this sight because im trying to find the answer! urghh

*October 27, 2010*

**9th grade math**

suppose u invested some money at 8% simple interest for five years. if u received $500 in interest, how much money did u invest?

*October 26, 2010*

**9th grade math**

suppose you invested $1200 for four years. you earned $312 in simple interest. what is the interest rate?

*October 26, 2010*

**9th grade math**

you invest $1500 for three years.find the amount you earn at an annual rate of 8.25%

*October 26, 2010*

**math**

at a local grocery store, the bananas they receive are transported through three stages: from the farmer to the market, from the market to the wholesaler, and from the wholesaler to the grocery store. at each stage, the price of the bananas increases by 20% of the previous ...

*October 25, 2010*

**Maths**

Divide $4000 to Kimand Dan in the ratio 3:5 How much money will each have?

*October 21, 2010*

**Math**

ok so you have 23 = 1-d If you are looking for d than you have to get d by itself. To do this you can do it one of two ways. you can add D to both sides to get rid of the negative d (b/c you are looking for positive d). this would leave you with 23+d=1 then to get d by itself ...

*October 19, 2010*

**Math**

if you are solving for d then all you have to do is subtract both sides by one and then divide by a negative d= -22 or add d to both sides and subtract 23 either way works

*October 19, 2010*

**Physics**

Utexas? I hate it too =(

*October 16, 2010*

**math**

the answer is 13

*October 11, 2010*

**4th grade**

On the average your heart beats about 72 times per min. At this rate, about how many times will it be 30 days in a year in your lifetime if you live to be 72?

*October 11, 2010*

**physics**

A 60 kg skier with an initial speed of 12 m/s coasts up a 2.5 m high rise that makes a 35 degree angle with the horizontal. If the coefficient of friction between the skis and the snow is .08, find the speed of the skier when he reaches the top of the rise. How much work does ...

*October 9, 2010*

**3rd grade math (array)**

what is the aweser to this

*October 7, 2010*

**social studies**

whats the effect on climate for these listed below?: sun and location wind water mountain

*October 6, 2010*

**math**

1,3,6,10,15....

*September 30, 2010*

**9th grade**

If a 300 N action force is exerted to the right, the reaction force will be ___.

*September 23, 2010*

**english ")**

a sentence that use a context clue and the word serene!!

*September 22, 2010*

**chemistry**

6 Mols of NO_2 This is due to there being 8 mols in the theoritical yeild and using the % yeild formula. Sorry I'm not too sure how to explain how I did this.

*September 20, 2010*

**en**

Many students mistakenly believe that anything that appears in print must be a fact. Especially in textbooks.

*September 12, 2010*

**biology**

WHAT CHARGE ARE PROTONS

*September 7, 2010*

**physical science**

A 50 kg crate is lifted to a height of 10 meters.How much potential energy does the crate have begin lifted?

*September 7, 2010*

**Statistics**

Using a Z-value of 2.575, the answer is 238.7; or 240 if the answer is in multiple choice form.

*September 5, 2010*

** physics (last problem)help**

above answer is not correct

*September 3, 2010*

**M**

My hw says explain why the plot u plotted is correct in between 2 n 3 there are 3 lines and you want to get 2 n 1/6 so I plotted the line between 2 and the line after that can u explain how I'm right ???

*August 31, 2010*

**hrm 240**

so like some disadvantages for internal would be if you don't have a job at bank you can't get job. and advanges would be if you are a employee you have a good chance for the job.

*August 19, 2010*

**hrm 240**

My assignment is write and post a minimum of 350 words checkpoint naming one internal and three externak ways that you could recruit for the job in your final project. What are the advantages and disavantages of each recruit method for the job? I chose bank manager for my ...

*August 19, 2010*

**hrm 240**

need help it says to naming one internal and three extrnal ways that i could recruit for the job the job i chose is bank manager and what are the advantages and disadvantages to this is? what i want to know is what is internal and external ways?"

*August 19, 2010*

**medical**

i really feel it is d.negligence

*August 14, 2010*

**Math**

You have a wire that is 35 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The other piece will be bent into the shape of a circle. Let A represent the total area of the square and the circle. What is the circumference of the ...

*August 8, 2010*

**Algebra**

Five-Sixths of a number is -60. What is the number?

*August 7, 2010*

**Pre calc**

Haha thank you so much I feel so stupid haha

*July 30, 2010*

**Pre calc**

Vector A has magnitude 23 units and direction, counterclockwise from east, of 5.8 degrees. What is the value of its x component to 1 decimal place? Its y component? This problem seems easy enough but I keep getting the wrong answer using the law of sines. Is there another way ...

*July 30, 2010*

**Algebra**

Order of opperations or PEMDAS. Parenthasis, exponents, multiply, divide, add, subtract. In that order. For this problem, an exponent is inside of parenthasis. So if you want to solve the parenthasis first, you need to solve the exponent then multiply by 5 and then subtract by...

*July 29, 2010*

**Physics check**

A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and...

*July 13, 2010*

**Physics**

How far to the nearest tenth of a meter can a runner running at 11 m/s run in the time it takes a rock to fall from rest 90 meters?

*July 13, 2010*

**Physics**

Im sorry I am new to physics this is my first year and I still have no idea what to do for this problem. The other two that you answered I had them correct before you answered them and was using it as a check. When I reworked them your way, I got the same answer. However on ...

*July 13, 2010*

**Physics**

A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?

*July 13, 2010*

**Physics**

A passenger in a helicopter traveling upwards at 19 m/s accidentally drops a package out the window. If it takes 14 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped? To the nearest meter what was the maximum height of ...

*July 13, 2010*

**chemistry**

can anyone explain to me this i don't understand it. Radicals Certain groups of different atoms will join together and act as a single unit when forming compounds. Such a group of atoms is called a radical. In the compound calcium carbonate, written CaCO3, the carbonate ...

*July 10, 2010*

**Physics**

A car traveling at 10 m/s accelerates at 2.03 m/s2 for 11 seconds. To the nearest meter how far does it travel? To the nearest tenth of a m/s, what is the final velocity of the car in the previous problem?

*July 8, 2010*

**Physics**

A car accelerates at a constant rate from zero to 36.8 m/s in 10 seconds and then slows to 13.9 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds? What was the acceleration during the first 10 seconds in the previous problem?

*July 8, 2010*

**Physics**

A car accelerates at a constant rate from zero to 36.8 m/s in 10 seconds and then slows to 13.9 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds?

*July 8, 2010*

**algebra2**

the 2 is supposed to be below q-2

*June 27, 2010*

**algebra2**

q+5 + q-2 = 7/3 _____________ 3 2

*June 27, 2010*

**algebra2**

another one i don't get. the number N im millions of hearing impaired individuals of age X can be approximated by n=0.00006x by power of two+0.0006x power of two-0.1x+1.7 approxmate to the nearest millions the number of hearing impaired individual for ages 45 and 55?

*June 13, 2010*

**algebra 2**

ok supposed the base of a triangle is 5 cm greater than the height the area is 52 cm what is the height and length at the base?

*June 13, 2010*

**algebra 2**

simplify (4f power of 7)power of four is it f power of 8?

*June 13, 2010*

**algebra 2**

so t=31

*June 13, 2010*

**algebra 2**

i cant figure out how to solve this? T with two over powe +7T-18+0 so far if figure out T+ but i dunno what

*June 13, 2010*

**windows xp and vista**

I am taking this same course and I can't believe you have just posted the entire test on here when it is an open book test. Did you read anything?

*June 9, 2010*

**chemistry**

Im sorry but i don't get it..... wouldnt the Cr in C2O72- have a 6+ charge? and Cr3+ has 3+ charge. So the left Cr would be 6*4 =24 and the right Cr is 3*4= 12 so wouldnt that be 24-12= 12? what was your logic behind reducing it to 6? im sorry but this really confuses me

*June 6, 2010*

**chemistry**

for example this problem. the n is 6. how do we derive that? The galvanic cell described by the balanced chemical equation has a standard emf of 0.10 V. Calculate the maximum electrical work (kJ) the cell has done if 1987.2 g of Cr2O72-(aq) (Molar Mass - 216.00 g/mol) reacts. ...

*June 6, 2010*

**chemistry**

oh, im sorry. i wrote it wrong. But i also had one more question. Do the coeffiecents have any effect on our calculation of "n"?

*June 6, 2010*

**chemistry**

but don't you need to incorporate the charge of H+ when finding n

*June 6, 2010*

**chemistry**

i know how to do the problem but im not sure how the H+ effects the charge

*June 6, 2010*

**chemistry**

The electrochemical cell described by the cell notation has a standard emf (electromotive force) of -0.68 V. Calculate the value (kJ) for the standard free energy change of the cell. Round your answer to 3 significant figures. Pt(s) l MnO2(s) l MnO4-(aq), H+(aq) ll H+(aq), VO2...

*June 6, 2010*

**school**

no one

*June 1, 2010*

**planning & sys requirementa**

what are the problems with the reliability and usefulness of analyzing business documents as a method for gathering information reguirements. Haow could you cope with these problems to effectively use business doumnts as a source of insights on system requirements?

*May 31, 2010*

**Math**

Check your formula it should be Rsquared not R2 (60x60) not 2X60

*May 26, 2010*

**Organic Chemistry**

I'm doing the same thing but I do not understand it fully. All of my general chemistry knowledge is gone.

*May 18, 2010*

**math**

2x-5+2(2x)+17=-2-5x+(4xy-7)

*May 11, 2010*

**Math **

Hi, can anyone help to: determine the equation of a parabola with the vetex (0,3) and passing through (3,4)? How to figure out the coeffiecient of X?

*May 5, 2010*

**Math **

Hi, can anyone help to: determine the equation of a parabola with the vetex (0,3) and passing through (3,4)? How to figure out the coeffiecient of X?

*May 5, 2010*

**mgt**

what is evaluation by objectives?

*May 4, 2010*

**mgt**

what is evaluation by objectives?

*May 4, 2010*

**mgt**

what is evaluation by objectives?

*May 4, 2010*

**mgt**

what is evaluation by objectives?

*May 4, 2010*

**mgt**

what is evaluation by objectives?

*May 4, 2010*

**mgt**

what is evaluation by objectives?

*May 4, 2010*

**mgt**

what is evauation of objectives?

*May 4, 2010*

**mgt**

what is evauation of objectives?

*May 4, 2010*

**machanics\**

can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36 m/s

*May 3, 2010*

**begining algebra**

A cyclist traveling at a constant speed completes 3/5 Of a trip in 1 1/2h. In how many additional hours will the cyclist complete the entire trip?

*May 2, 2010*

**aed204**

I am taking that class too......this is cheating can't you do your own research

*May 2, 2010*