Sunday

May 24, 2015

May 24, 2015

Total # Posts: 809

**Chemistry**

Aspirin can be prepared by the reaction of salicylic acid with an excess of acetic anhydride, using phosphoric acid as a catalyst. Once the aspirin is formed, it is precipitated from the reaction mixture by adding water and filtering. The solid aspirin obtained in this way is ...
*April 2, 2009*

**Microeconomics**

5.1 million for VC
*February 26, 2009*

**Physics**

Two converging mirrors of focal length 30 cm are 15 cm apart. If an object is placed 1 cm from mirror one, how far from mirror two will the second image be?
*February 25, 2009*

**Math**

List all subsets for (m,a,t,h)
*February 20, 2009*

**math**

In standard position, an angle of 7pi/3 radians has the same terminal side as an angle of? A)-420 B)120 C)60 D)625
*January 28, 2009*

**math**

um find the product
*January 7, 2009*

**math**

wait how do i do this one then same thing? 10 x (-2 3/11)
*January 7, 2009*

**math**

find the product. 2/3 x 7/8
*January 7, 2009*

**chemistry**

I actually think it is Cl
*December 1, 2008*

**chemistry**

Higher
*December 1, 2008*

**statistics**

Shedz processes two varieties of kiwifruit – green and gold. Constraints on daily packing are as follows: • At most, 2 000 trays can be packed in total. • At most, 1 200 trays of green can be packed. • A minimum of 200 trays of gold need to be packed. •...
*December 1, 2008*

**Chemistry**

Yes I agree
*December 1, 2008*

**Chemistry**

Yes.
*December 1, 2008*

**trig**

Oh I get it now. thanks for your help.
*December 1, 2008*

**trig**

No I have not come across that before.
*December 1, 2008*

**trig**

How do I solve this? If cos x= 3/5, find the exact value of cos 2x
*December 1, 2008*

**biology**

Surface Area to Volume ratio. The larger the surface area that the cell has in relation to the volume, the more space it has to take in nutrients. This is the largest when the cell is small. So as a cell gets bigger the SA to V ratio gets smaller and less SA is avaliable for ...
*December 1, 2008*

**biology**

Think about the SA to V ratio to start with
*December 1, 2008*

**Chemistry**

No problem :)
*December 1, 2008*

**Chemistry**

No it is in fact Potassium
*December 1, 2008*

**Chemistry**

Yes that sounds reasonable to me. Although what about the noble gases? Don't they have a higher IE?
*December 1, 2008*

**math**

follow M.D.A.S
*December 1, 2008*

**physics**

A steel ball has a mass of 4.0kg and rolls along a smooth, level surface at 62m/s. A) Find its kinetic energy(i got this and its 7688 joules) B)?????-At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22 meters to give it the ...
*November 22, 2008*

**MATH**

Let f(x) = 3(x-1)^3 + 4(x-1)^2 + 2(x-1) -7 (a) Determine f'''(1) without taking any derivatives. Explain your method. (b) Determine the general Taylor polynomial of f aobut c =2 by computing any for each k, using the formula above for f(x).
*November 14, 2008*

**Math**

Let f(x) = 3(x-1)^3 + 4(x-1)^2 + 2(x-1) -7 (a) Determine f'''(1) without taking any derivatives. Explain your method. (b) Determine the general Taylor polynomial of f aobut c =2 by computing any for each k, using the formula above for f(x).
*November 13, 2008*

**sci 275**

If your needing help in Environmental Science or any other University of Phoenix Class I suggest you go to Google, and do a search for AxiaTutorials all one word. They have helped me countless times when I was having problems, and I guarantee they can help you.
*November 7, 2008*

**Math**

Engineers and physicists are fond of using the approximation Square root (1+x) = 1+(x/2)? What approximation do you suppose the engineers and physicists would use for the quantity (1+x)^(3/2)
*November 7, 2008*

**other**

vowel?
*November 5, 2008*

**french - reflexive verbs**

thanks so much but is there a possible situation where both passe compose with avoir and passe compose of a reflexive verb in the same sentence?
*November 2, 2008*

**french - reflexive verbs**

what i meant was what if the sentence has an avoir past tense and a reflexive past tense? then would the sentence end up with suis and ai? and what is the order of the suis and ai? regarding je
*November 2, 2008*

**french - reflexive verbs**

the word order for past tense is je ne me le lui y en ai pas donné but when you're using reflexive verbs for past tense its "je me suis" does the suis incorporate into the word order?
*November 2, 2008*

**Physics**

sqrt(ks^2-2mgy/m)
*October 31, 2008*

**Science**

trying to work out the angular size of Saturn I know the equation is 57degrees times (actual size divide distance) = Angular size so I have the following: 57deg times (120535 div 1195772020) = 0.005745.... it goes on a fair way. 0.005745 degrees... is this correct?
*October 22, 2008*

**financial accounting**

Which of the following supports the accrual basis of accounting? revenue recognition concept, cash concept, mathcing concept, or revenue recognition and matching concepts?
*September 21, 2008*

**financial accounting**

unexpired insurance at the end of the fiscal period represents; an accrued asset, an accrued liability, an accrued expense, or a deferred expense?
*September 21, 2008*

**financial accounding**

unexpired insurance at the end of the fiscal period represents; an accrued asset, an accrued liability, an accrued expense, or a deferred expense?
*September 21, 2008*

**Math**

whats property-commutative associative
*September 18, 2008*

**Life science**

What are the twelve steps in the scientific method?
*September 14, 2008*

**5th grade**

how do you do a paragraph paw
*September 11, 2008*

**sociology**

What measurements do sociologist use to calculate prejudice?
*May 24, 2008*

**chemistry**

why ortho nitrophenol are more volatile than para nitrophenol
*May 14, 2008*

**math**

factor this polynomial function completely f(x)=12x^4+10x^3-214x^2+198x+90 I found all the possible rational zeros but just cant seem to factor it all
*May 8, 2008*

**physics**

On a day when the speed of sound is 354 m/s, a 2000 Hz sound wave impinged on two slits 30 cm apart. At what angle is the first max located? I just am not sure what equation to use. any help is appreciated..im lost
*April 30, 2008*

**chemisry**

How does the precision of a calculated answer compare to the precision of the measurements used to obtain it?
*April 27, 2008*

**chemistry**

The atomic masses of elements are generally not whole numbers. Explain why.
*April 27, 2008*

**Math**

Does the sequence converge or diverge? 2n+(-1)^n5/ 4n-(-1)^n3 I know I need to find the limit..but i dont know how to do this
*April 21, 2008*

**Calc-Sequence**

Find a formula for 1/2, -1/4, 1/6, -1/8, 1/10... So I know that the sequence is just adding 2 to the bottom but i dont know how to write it with a formula including n's..im stuck
*April 21, 2008*

**AP CHEM**

Where did you get the 61.49 from?
*April 17, 2008*

**history**

i`m in year 7 and i need to write a newspaper report either from the catholic view or prodestant view about when hugh latimer and nicholas ridley bishops in 1555 were killed. no idea where to start.
*April 13, 2008*

**Brain Teaser**

Could it be 80% below the ice (like an iceberg)
*March 19, 2008*

**Geography AS level**

what issues have risen in the uk when managing floods? please could somebody help me!? thanks
*March 18, 2008*

**Geography AS level**

how would the impacts of a flood differ from an MEDC to an LEDC? please could someone help me!? thanks
*March 10, 2008*

**science**

what force is necessary to accelerate a 70kg object at rate of 4.2 m/s2
*March 8, 2008*

**Science**

What force is necesary to accelerate a 70kg object at rate of 4.2m/s2
*March 7, 2008*

**Problem Solving**

Carl is trying to find a combination. It's written in a riddle. Find 2/3 of the final number, add 16, and this number will equal two times the mystery number. What was the final number of the combination?
*February 21, 2008*

**Geography**

explain way in which urban landscapes can modify city climates. please could someone help me with this question? thanks
*February 19, 2008*

**business**

arguments for and against competing in a mass market. please could somebody give me some pointers?
*January 7, 2008*

**chemistry**

1.2
*December 28, 2007*

**math**

i need help understanding sequences and i been trying to find a problom on my homework can you help me
*December 9, 2007*

**Gov.**

Thank You.
*December 8, 2007*

**Gov.**

Where can I find a website to answer this question: What is a current issue between Native Americans and the federal government? Identify the legislation that you think is linked to the issue.
*December 8, 2007*

**com125**

Can anyone tell me a website to find the verbal & nonverbal communication stlyes of Egypt & Italy? I have googled, asked can't find a thing. Help!! Any info. is appreciated.
*December 5, 2007*

**math**

Using numbers,words or symbols,write a rule that could be used to find the total cost of any number of museum tickets. You may use n to represent the number of museum tickets bought.
*December 3, 2007*

**business studies**

what possible benefits would a car manufacturer have if they decide to use mass marketing? please could someone help me Paul
*November 27, 2007*

**plant biology**

How are different flowering times related to plant survival?
*November 18, 2007*

**Math - Trig - Double Angles**

verify identity cos 2A sec A = 2cos A - sec A
*November 17, 2007*

**pre-cal: one-to-one property**

e^(X^2+6)=e^5X
*November 10, 2007*

**Math**

The next palindromic number would be 16061 so subtract 15951 from that then divide by the 2 hours 16061-15951=110 110/2X X=55
*November 6, 2007*

**math**

-5y-9=-(y-1) I combined like terms and I divided -8/-4. I got 2. Is this right?
*November 1, 2007*

**Chemistry-HELP!!!**

Show the side reactions and products that can occur when 1-butanol is treated with NaBr and H2SO4. R-OH (yields:NaBr and H2SO4) 1-bromobutane + water + sodium bisulfate This question was posted before, but I have the same question and seriously need help!!!
*October 31, 2007*

**English**

What word fits better in the following sentence: To the __________ of many taxpayers, some citizens seem to cheat the government with impunity. A)perfunctory B)preverse
*October 26, 2007*

**science**

I do not know
*October 25, 2007*

**business**

please could somebody give me any real life examples of comapanys that lease assets... thank you!
*October 15, 2007*

**Calculus**

Thanks bob! Thats what I ended up working out and it turned out to be the right answer :)
*September 27, 2007*

**Calculus**

I'm doing statistics homework and am stuck on a problem using integration. The problem gives a distribution where for x>1, f(x) = k x^-6. I am then asked to "Determine the value of k for which f(x) is a legitimate pdf. " To be a legitimate pdf, the integral of...
*September 27, 2007*

**venn diagrams**

Set up your diagram with 3 circles, S, G, A, for each subject. The middle should have a small space that includes part of all 3 circles. Start from this spot and move outward. This very middle spot represents the students who are in all 3 subjects. As given in the problem, ...
*September 27, 2007*

**grammar**

What about this one? Harry Truman, a southern democrat, is known for creating The Truman Doctrine and NATO. What is the correct capitalization?
*September 3, 2007*

**grammar**

What is the correct capitalization in this sentence? Truman became President when F.D.R. died.
*September 3, 2007*

**MATH**

I'm having trouble with this problem: Guess a simple formula for the sequence that begins: -1, 1/2, -1/3, 1/4, -1/5 term(n) = (-1)^n x 1/n will do it
*August 13, 2007*

**Algebra**

Write the ratio of 7 nickels to 2 quartes in simplest form (7x5)/(25x2) = 35/50 = ?
*August 3, 2007*

**science**

How do I predict how long will it take for lava to reach the town, which is 10km from the lava vent, if I know that after 2 days lava was 5 km far from the vent. Thank you Lava traveled 5 km in 2 days. How long will it take for lava to travel 10 km? But what about speed? If ...
*May 26, 2007*

**Math**

How can I determine a value of gradient from a graph if the line is curved. (not a straight line) This is where Calculus comes in If a graph is a curve, then the gradient (slope) of the curve is the slope of the tangent that you draw at a particular point on that curve. You ...
*May 22, 2007*

**Oakwood Elementary**

How many cups make one litre? http://www.worldwidemetric.com/metcal.htm It depends on the country. I cup is usually taken to be 250 ml in Australia, Sweden and New Zealand. In Canada it is 227 ml. The US cup it is 237 ml.
*April 12, 2007*

**Biology**

(i) Met, Ser, Leu ------------------------------------------------------------- (ii) Ile, Ser, Phe ------------------ I have calculated the above polypeptides, can anyone explain why changing (i) to (ii) may change the function of the new protein?
*April 8, 2007*

**Physics**

A non-uniform beam of length L and weight w makes an angle of è with the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of farther down the beam and perpendicular to it. The center of gravity of the beam is a ...
*April 3, 2007*

**Chemistry Very Urgent!!**

A 0.035 M solution of a weak acid (HA) has a pH of 4.88. What is the Ka of the acid? HA ==>H^+ + A^- Ka = (H^+)(A^-)/(HA) pH = -log(H^+) You know pH. Convert that to (H^+). (H^+)=(A^-) so plug those into the expression for Ka. (HA) = 0.035 M - (H^+). Plug that in. Calculate...
*April 2, 2007*

**Chemistry**

0.50 M HI with 0.10 M KOH pH at equivalence point? I had another problem like this and I tried to do it the same way b/c I thought that was the right thing to do but it seems as if its not? Can you help? HI + KOH ==> KI + H2O. At the equivalence point we will have KI (the ...
*April 2, 2007*

**chem**

are these already balanced? CuSO4 + Zn ---> CuZn + SO4 AgNO3 + NaCl ---> AgCl + NaNO3 AgNO3 + NaCl ---> AgCl + NaNO3 CuSO4 + Zn ---> Cu + ZnSO4 is the correct equation I know how to balance equations but im not sure about these Yes, they are balanced. But you ...
*March 20, 2007*

**chem**

State the type of reaction. Predict the products of the reactions. I have no clue how to do this any help? C3H8 + O2 ---> Mg + HCl ---> AgNO3 + NaCl ---> CuSO4 + Zn ---> How much of this do you know how to do? Just checking answers. Give us your answers and we ...
*March 20, 2007*

**Math**

Two Congruent angles are supplementary. The measure of each angle is? If A+ A= 180, then... 90
*February 23, 2007*

**rf value of lycopene**

Is the the rf value of lycopene and with what solvent can you use as a mobile phase on a TLC? I don't know the answer here but I looked on the Internet and found something that may get you started. I found the Rf value for lycopene to be between 0.4 and 0.6 and the best ...
*February 19, 2007*

**algerbra**

how do I solve 4/3x3.14x3.7cubed= You need to use parentheses and explain what the . stands for. And is x what you are solving for or is that a times sign?
*January 21, 2007*

**Chemistry**

Need help with these conversions please 0.08206 Latm/molxK to cal/molxK ? 0.08206 Latm/molxK to J/molxK ? I will be happy to critique your work. You have the conversion coefficents. 0.08206 X 101.3 = 8.31 cal per molK 0.08206 x 4.184 = .343 J per molK
*January 21, 2007*

**chemistry**

Need help with these conversions please 0.08206 Lxatm/molxK to cal/molxK ? 0.08206 Lxatm/molxK to J/molxK ? Thanks. 1 liter*atm= 101.3 joules = 101.3/4.18 calories
*January 21, 2007*

**algebra**

2x^3+3x^2-5x-6=0 Factor out x+1
*December 19, 2006*

**Chemistry**

I confirm your answer :)
*December 6, 2006*

**English**

i need to define bandwagon,glittering generality, image advertising, name calling, etc and this web site but i dont know were to look for There are many websites you can try. Be sure to try more than one website for each term. http://www.answers.com http://www.google.com/...
*November 25, 2006*

**Trig**

Express 10sin(ƒÖ.t+ƒÎ€4) in the form AsinƒÖ.t + BcosƒÖ.t Your symbols are illegible, with things like Euros and capital O-umlauts. Can you possible retype with different symbols?
*November 24, 2006*

**Science 4**

true
*November 21, 2006*

**Need help! French Exam tomorrow!**

fail
*November 8, 2006*