August 1, 2014

Search: Chemistry (again)

Number of results: 48,762

geometry again again again again
If angle AFB= 8x-6 and angle BFC= 14x +8, find the value of x so that angle AFC is a right angle.
September 27, 2009 by Monique N.

Hello. Please help me with a few questions. 1) Which is the correct position of "again" in the sentence: "They have (again)gathered (again)at the square (again)"? 2)Does the phrase "the allegations doubt his integrity" have the same meaning as "the allegations question his ...
May 15, 2011 by Ilma

Summer School Calculus
Another one for you :P, add these two vectors using trigonometry (again)... 9N[S2W] and 11N[N31W]...Again, I am confused about the angles, I am not sure what value I should use for the cosine and sine law. THANKS AGAIN!!
June 29, 2008 by Derek

1. Can we meet again one day? 2. Can we meet again oneday? 3. Can we meet again some day? 4. Can we meet again someday? (Which ones are grammatical? Which one is commonly used? Thank you. Have a good day!)
December 14, 2011 by rfvv

geometry again again again
Two angles are supplementary. one angle measures 12 degrees more than the other. Find the measures of the angles.
September 27, 2009 by Monique N.

How do I solve this equivalent equation? 5x +2 < 17 (again the <is underlined) Do I subtract 2 from each side so it would read 5x < 15 (again the < is underlined) than divide each side by 5 so the x < 3 (again the <is underlined) is the answer? Also, how do I...
April 9, 2008 by Tyler

What will be the pH of an aqueous solution containing 0.040 mol/L sodium hydroxide?? I got 1.40 or 1.398 I rounded the numbers is my answer right??? If not what's the right answer?? I know I wrote the question again, because on the previous answer I did not understand what u ...
December 23, 2010 by Tarkan

Chemistry(Please check)
. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would you agree? ...
April 9, 2012 by Hannah

Use oxidation numbers to identify reaction is REDOX reactions. a. 2SO2(g) + O2(g) -> 2SO2(g) for 2SO2 I got: -2 for S, -2 for O for O2 I got 0 for 2SO2 I got -2 for S again, and -2 again for 0 Therefore I lost one oxygen and a REDOX reaction occured Am I right?????
June 19, 2011 by Amy

They are arguing about rules and regulations again. I have to identify the adverb. again
November 3, 2010 by Jake

calculus hs
Here's the question again How do I find all line through (6, -1) for which the product of x- & y- intercepts is 3? Thanks again
September 21, 2008 by kelly

So, yet again, I am confused! State whether or not the following statements are true. Justify your reasoning. a). a ( b+c ) = a b + a c b.) a ( b+c ) = a b + a c c.) a ( bc ) = a b a c Thanks, again!
July 2, 2008 by Derek

French for Anonymous to Sra
its me again could u please tell me how to say by: to: due: I need it for my title page thanks again:)
January 11, 2009 by Anonymous

Me again :) Why might a car manufacturer change the shape of the side mirrors on a particular model? Thanks again.
January 11, 2010 by 1234

vocab, again! sorry!
Hi, again. I need help with this word decorum. the def is ADJ proper; seemly correct how do i use this in a sentence?
October 6, 2008 by Kristin

How do you calculate molar mass again?
November 22, 2009 by Klaud

Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to study Chemistry I again?
April 19, 2012 by Mima

Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to study Chemistry I again?
April 19, 2012 by Mima

The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ____ M)|Zn(s) is 24.0 mV at 25 C. Calculate the concentration of the Zn2 (aq) ion at the cathode. Hi, I posted this question awhile back but I think it got drowned out so I ...
June 7, 2012 by Katherine

What is the percent ionization of a 1.38 mol/L weak acid if its Ka = 2.7 x 10^-6? Thanks again!
April 19, 2008 by Amandeep

chemistry: again
What is the predominant type of intermolecular force in I2 (iodine)?
February 1, 2009 by Erin

Substitute a word beginning with re- for each of the underlined phrases. 1) The patient was(admitted again) after.. 2)I would like you to(copy this assignment)in.... 3) When the CD player broke I asked for my money (back again)
March 1, 2012 by flower

Health (again)
Hi! It's me again! Here is the question: How many teenagers smoke in ontario? (as recent year as you can find) 20.7 teenagers Thank you Sam!! :)
December 7, 2006 by Caley

please help me solve this riddle. "you've heard me before, yet you hear me again. Then I die, Til' you call me again." Who wrote this riddle?
November 5, 2007 by kali

chemistry again
how do you find the concentration of an ion remaining after a reaction is complete???
September 29, 2013 by Anonymous

Solve the system by graphing by any method of your choice. 3x-y=1 or y=3x-1 3x-y=2 y=3x-2 (0,-1),(2, 5)and(0,-2),(-2,4) Solution is Consistent, lines intersect at (-1/4, -5/4). Above is my answer but I keep coming back to this again and again. Am I missing something? I solved ...
May 20, 2007 by Amanda

algebra 2..again
2y^3-10y^2+12y...need to factor again..i got to the second step... 2y(y^2-5y+6)...think thats right but i dont get how to factor that plz..
January 9, 2008 by gq

Algebra 1 Please bobpursley again
Thanks to everyone for trying to help me. This is not really a question but an answer to what grade level this promblem is for my son is in ninth grade. Thank You all again
September 12, 2009 by Mary

hi again why is mentally retarded person not like a normal person is what i meant thanks again
March 1, 2009 by lila

After your explanation I try to solve it, so would you please check my work again. Thank you! a)
April 8, 2007 by wendy

Please briefly explain why is bond energy defined only for gases? Thanks for your help again.
January 9, 2012 by Ethio

Hello this is ellie again. I was wondering could you explain what a bombardment reaction is and and show an example of it? Thanks
December 5, 2013 by ellie

My assignment is about reading "Sociology as an individual pastime"( Peter L. Berger) and summarizing it. I have read it again and again for many times, but I still don't understand it clearly. Please help me
September 22, 2010 by Kimberly

1. Wilma was able to walk again at age twelve. 2. Wilma was able to walk again at the age of twelve. 3. Wilma was able to walk again at twelve. 4. Wilma was able to walk again aged twelve. (Which ones are correct? Could we use other expressions?)
March 13, 2011 by rfvv

DrBobb222!! Help!!
Please look at my Chemistry problems again, I reposted them with the constants and such. I am still confused!
September 11, 2012 by Jordan

I snap my fingers once. I wait one second and snap them again. I wait two seconds and snap them a third time. I wait four seconds and snap them again. I wait 8 seconds and snap them again. If this pattern continues, how many times will I snap my fingers in a year? Thanks!
February 4, 2009 by Meg

Chemistry (again)
What mass of NaOH is required to precipitate all the Fe2+ ions from 52.0 mL of 0.200 M Fe(NO3)2 solution?
September 28, 2010 by Alex

1. The Glass Menagerie once again taps into the audience's emotions, as it has for 70 years. 2. "Her son is about to fly away, never to seen or heard from again and she knows it," Jones said. (Are they all grammatical? Would you check the errors in them?)
October 25, 2013 by rfvv

Algebra 2
Two days ago "Steve" helped me with this problem. I am grateful to him. I didn't get it and asked for him to help me again. He showed it to me again, but I needed more steps shown. Then I think he was finished for tutoring for the day before I could see it again with more ...
January 12, 2013 by Bart

Chemistry- Dr. Bob again
Another Redox in BASIC ....having a tough time with these OH's no clue how to tackle. Cr(OH)3 + ClO^- => CrO4^2- +Cl2 thanks for your help
June 8, 2013 by Steve

Hi, I am getting very frustrated. I am doing an online homework for chemistry and it's telling me to round to the nearest WHOLE number. So the answer I got was -1435.650.... And I typed in -1436. and said I was wrong and so I tried it again and typed 1.4 x 10^3, wrong again. ...
August 4, 2010 by Anonymous

math again
please help me and thank you. the product of two whole numbers is 48 and their sum is less than or equal to 20.what are all the possiblities for the two whole number? again thank you for helping me :]
November 13, 2008 by i dont understand!

Biology....someone who can explain something to me
can someone explain the Miller-Urey Experiment to me? I've read it again and again and I just don't really get it. Please help me out here.
February 5, 2013 by Corie

If I want to say: "...but now all is well again" do I use "encore" or "de nouveau" for "again"? Mais maintenant tout est bien encore(de nouveau) Merci beaucoup!!
November 14, 2008 by Anonymous

Chemistry again
PbO2(s) + Pb(s) + H2SO4(aq)  PbSO4(s) + H2O(l) Can anyone help me identify what the redox reactions are for this equation? I don't understand how to do it when there are more than 2 chemicals.
February 13, 2008 by Alex

why we just see a light spot of benzaldehyde after tlc in iodine chamber which soon vanishes and does not appear again?
August 20, 2011 by manoj

Pre-Algebra ... again :-(
How do i go about finding the integers of a product and quotient ... like, product of -20 whose quotient is -5 ..... thanks again
February 19, 2010 by Emily

Please help again. How many grams of lithium are required to completely react with 70.7 mL of N2 gas at STP when given the following reaction: 6Li + N2 = 2Li3N
December 3, 2011 by Lisa

I am very sorry but I was wrong with the problem. The math problem is: 9 / (3.6-2.1) Thank you Anonymus for your answer but I want the problem that I wrote above. If you help me again pleaseeeeeeeee. I don't know how to resolve this. Thanks again.
August 25, 2011 by Veronica

This is the last one Dr Bob! How much concentrated 18 M sulfuric acid is need to prepare 250 ml of a 6.0 M solution? Im stumped again, could you point me in the right direction ? Thank you sir!
May 28, 2009 by Alan

If you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9 of the radioactive material has decayed so that you can safely wear the shoes again?
May 12, 2011 by brittany

The smaller of 2 numbers is 10 less than 4 times the greater number. The bigger number is 19 more than the smaller one. If x is the smaller number one equation is: a)x+y=19 b)x=19-y c)y=x+19 d)x=y+19 I'm almost positive it is d I just want to check. A second equation is: a)x=...
January 16, 2007 by eragon

science again again
so if i were saying i was something somethings tall.....wich would be better....meters...centimeters...or millimerter... I really doesn't matter, but say if it were a building, then meters. Distance to the tip of Africa from where you are, then kilometers. For the length of a ...
October 22, 2006 by chemiii

In French, what does agreement mean again? Cause for example I put down this: Ils ont marches sur l'Avenue Champs-Elysees. But there shouldnt be an S after marche because theres no agreement with avoir. Could I please know what agreement means again?
March 11, 2011 by Sidney

Points A,B,C are given on circle Γ such that AB=BC. The tangents at A and at B intersect again at point D. The line CD intersects Γ again at E. The line AE intersects BD at F. If AD=120, what is the length of FB.
May 29, 2013 by ABCD

A 0.446g sample of an unknown monoproctic acid was titrated with 0.105 M KOH The molar mass is 120g/mol. What is the PKA value? Pls helps me again
August 19, 2012 by Fai

Math(Please Check Again)
25-x^2 6x^2 ------ * ------ 12 2x *I got: 5-x/2 No. Try again. Can you tell me what I did wrong please.? You have to factor the numerator, you should have two factors for the first, and one for the second. In the denominator, you will have 24 x. I think the x divides out, and ...
February 21, 2007 by Margie

i do not get this question at all and if u could help it'd be a real HUGE help. solve these equations (sorry i do not have the symbols so i will just write the words out. sorry again for any inconveniance. ): time= 2pi x squareroot of length/gravity ....i know it my seem very ...
July 2, 2008 by marina

Suppose you toss a coin and it you win a dollar if it comes up heads. If it comes up tails you toss the coin again. This time you get two dollars if it is heads. If it is tails you toss it again. This time you win four dollars if it is heads, but if it is tails you toss it ...
October 31, 2008 by brianne

Good day to everyone My class has just started a "Chemistry systems in Equilibrium" unit and I have a question I would like answered if possible, I would truly appreciate this. My Question: How will the following system change when F2(g) is added to a sealed vessel containing ...
March 31, 2008 by Jessica

MsSue- re
im sorry my post appeared twice it didnt show my question when i looked then when i posted it again it was there. Im sorry my computer is a bit slow. thankyou for your help now you have explained the question ive got an idea what i need to do. Thankyou again!
March 17, 2009 by Kerrie

Chem drawing
how would I draw this compound? 2-bromo-6-chloro-4,4-dimethylheptane I've tried it again and again but I can't seem to get the Cl on the 6th carbon while still having a 6 carbon chain of heptane I drew it so that it was CH3 CBr CH2 CCH3CH3 CH2 Cl I just can't figure it out.....
September 29, 2007 by ~christina~

Hi again..sorry I havn't been asking questions these days as my sister (y912f) is always on :P I wanted to know whether it is better to brush your teeth after eating or before. Because mostly everyone does it before but I don't see the point when they're going to get dirty ...
January 27, 2009 by mysterychicken

Confused again ok I have to find the number of atoms in carbon with a mass of 13.5. So this is what I didi. 13.5 / 12.01* 6.022 *10^23= 6.77x10^23 but the correct answer is 6.74x10^23 what have I done wrong
September 25, 2011 by Monique

A man comes up to play a game. you flip a coin, if heads you win $1 and keep playing if heads again you get $2, if you get heads again, $4 and so on. If you flip tails you take your money and the game is over. How much should he be willing to pay?
August 10, 2010 by Tara

Guru Blue superstar
Hey Guru, Once again you shine that light. Thank you so so much for the links. Anybody else reading this should know I wish I had had Guru Blue as my teacher when I was a kid. A practical, patient and ever helpfull human being. Thank you again.
March 21, 2009 by island boy

chemistry again
calculate the normality of a solution prpared by dissolving 220.0 mg of K2Cr2O7 in 100 ml solution that will be used to oxidize ferrous chloride according to the unbalanced reaction.
December 4, 2010 by Anonymous

Hello ellie again. I am still having trouble understanding bombardment. The question I'm working on says Complete the bombardment reaction ? + 40-18Ar → 43-19K + 1-1H
December 5, 2013 by ellie

General Studies
Someone on here gave me some sites that helped to unscramble words. I don't recall what the site was and I am in need help again. Could someone please give me some unscramble sites again? Thanks, Kimberly
November 5, 2009 by Kimberly

Can you please help me to work out the addreviated structural formulae of hydrolysis of tocainide? Won't it be the -NH2 group that hydrolyzes? ArNH2 + HOH ==> ArNH3^+ + OH^- Check my thinking. Thanks That is exactly what I thought it would be. Thanks again DrBob.
February 20, 2007 by Paula

An inductor used in a dc power supply has an inductance of 12 H and a resistance of 180 ohms and carries a current of .300 A. (a) How much energy is stored in the magnetic field? (b) At what rate is thermal energy developed in the inductor? ok once again I got part (a) .540 J...
March 18, 2008 by J

An inductor used in a dc power supply has an inductance of 12 H and a resistance of 180 ohms and carries a current of .300 A. (a) How much energy is stored in the magnetic field? (b) At what rate is thermal energy developed in the inductor? ok once again I got part (a) .540 J...
March 18, 2008 by J

Effusion/Diffusion Chemistry Help!!! If 4.83mL of an unknown gas effuses through a hole in a plate in the same time it takes 9.23mL of Argon, Ar, to effuse through the same hole under the same conditions, what is the molecular mass of the unknown gas? (146amu) Responses: * ...
June 18, 2009 by Capacino

I asked about this earlier and got an answer that caused me to rethink my process. Is this a good way to measure iron corrosion: weigh a nail, put it in water and let it rust, remove the rust (in my experiment the rust has come off easily, with just a wipe), and weigh it again...
November 26, 2006 by Jane

art - again!
im sorry to be a pain and ask for help again ive nearly finished my art homework but i aim struggling to write a story about the Michaelangelo,creation of Adam painting any ideas what i can write or a start off question. sorry to be a pain. thankyou so much
December 30, 2008 by KIERON

re -same question again
sorry to post this question again but i am having trouble finding evidence of what jesus did not do . i don`t really understand the question like i mentioned in my last post does it mean that he did not get married or have children . i can`t find anything i can print off. i ...
September 24, 2008 by zoe

chemistry again
If you are given V1=410 ml T1= 27 C= 300 K P1= 740 mm Find V2 in ml at STP When given STP= 273K and 1 atm
October 22, 2011 by Bianca

Math again
Thanks Ms Sue .. another question built on the last ... i figured 143 miles per year .. then next question, .4 miles per day ... now i have to figure out how many feet per day .. how do i calculate this? thank you again ...
November 29, 2007 by Emily

Is odor a physical property? I would think it would be, but then again odor is caused by chemicals.
May 28, 2009 by Daphne

A pair of complimentary angles have measure x* (star equals degree) and x*(again star equals degree) + 8*. What is the measure of the smaller angle? the problems looks like x* and x*+8* AGAIN THE stars stand for degree. I think the answer is 6, but not sure how.
January 17, 2008 by Tyler

3 Fe2O3 + 1 CO → 2 Fe3O4 + 1 CO2 how many grams of Fe2O3 are needed to prepare 255 g of Fe3O4? a. 118 g b. 552 g c. 264 g d. 383 g
April 7, 2008 by Sarah

Is it alright to ask a question again and again until you get the answer you want? Goodness, you have been responded to, and several of us read that and did not have diverging views from what Writeacher stated. If you did the research, did the analysis, then "I" is most ...
February 6, 2011 by bobpursley

what is the rhyme scheme for the poem: Come, the wind may never again Blow as now it blows for us; And the stars may never again shine as now they shine; Long before October returns, Seas of blood will have parted us; And you must crush the love in your heart, and I the love ...
October 24, 2013 by Mercy

Two trucks, 300 km apart, are on a head-on collision course with one another. The first truck is moving at 100 m/s and the other is moving at 50 m/s in the opposite direction. A confused (but swift) fly starts from the front bumper of the faster truck and flies at 200 m/s ...
September 26, 2010 by Amie

Chemistry HELP AGAIN!
What is the total molar concetration of all the ions in 0.015 M solutions of the following salts in water? .015 M KCl .015 M CuSO4 .015 M CaCl2
March 7, 2011 by Toni Jones

12 Chemistry
So I forgot, but I have one more I want to check while I am here (I seriously have a need for perfection, and want to include all of the details I can :P). So, what evidence is there that the esters synthesized in the lab are soluble? Again, thank you so much!!
February 18, 2008 by FOR A SCIENCE TEACHER ONLY!!!

In my chemistry lab we decomposed lead (iv) oxide by heating it and then placing a wooden splint(test the evloved gas) into the mouth of the test tube. The color changed into red lead ( Pb304).Then we reheated the sample again and it turned to PbO. I do not understand why the ...
April 20, 2009 by Lenny

Physical Science
An object travels 6m in the first second of travel, 6m again durning the second second of travel, and 6m again druning the third second. It acceleration in meters per second per second(M/S2) is
October 25, 2009 by Caitlyn

Hello! It's me again. How do I calculate % ionization for a.) .50M HONH2 Kb = 1.1e-8 b.) .10M CH3NH2 kB = 4.38e-4 What is [OH-] and pH of these solutions a.) 0.090M NaOH and 0.090M LiOH b.) 0.050M Ba(OH)2 and 0.050M RbOH
December 21, 2007 by Rebekah

english macbeth act 3
hey sorry i can't find the question iu poseted earlier so i'm going to ask's about macbeth act3.... how did the relationship between macbeth and lady macbeth change? again all that i know is that macbeth wants more power and lady macbeth is feeling hopeless, but ...
April 15, 2011 by Mark J.

A 1.0 L solution has 10.00 grams of CaCl2 dissolved in it. What is the Molar solubility of AgCl in this same solution? The Ksp for AgCl is 1.6 x 10-10 at this temperature. Hint: watch out for the common ion again.
April 12, 2014 by bekah

how many 5-digit palindromes exist? i get 9*10*10*10*9=81000 is this correct? my thinking being that the first and last digit must be 1-9 and the other 3 0-9. thanks again for the time and effort. oh, and if any of you fine folks have the time could you browse down to my other...
October 25, 2008 by courtney's dad

Calculate (delta)Suniv in J/mol-K for the above process at 298.15 K. Again, balance all chemical reactions using the loweset ratio of whole numbers. 1Fe2O3(s) + 3CO(g)--> 2Fe(s) + 3CO2(g) the standard entopy change is 16.4 J/molK
October 2, 2009 by Anonymous

religious education - again
im sorry to ask again for help but i am still struggling with my re poster. are there any sites i can go on that shows me any examples. i just don`t know what to put on the poster. should i put buildings or animals. its got to be palestine in jesus` life so does that mean to ...
December 30, 2008 by jasmine

please read this poem and tell me how I can inprove it. Thanks! Where have you been I almost forgot you Its been a year or so Since Ive seen you last Why did you have to come back I was trying to forget you And forget what you did Why bring back the bad memories Cant you ...
January 27, 2008 by Madison

Here's one last equation I can't balance: Al{subscript 2}(SO{subscript 4}){subscript 3} + ZnCl{subscript 2} -> AlCl{subscript 3} + ZnSO{subscript 4} Please help, and thanks again.
October 13, 2008 by Anonymous

Carlos has the slow to go hiccups. When they started, he hiccuped after 1 minute had elpased, then again after 2 minutes, again after 4 minutes, next after 8 minutes, and so on. How many total hiccups did he hiccup in the month of April if they began 12 midnight, april 1st?
April 8, 2008 by Peter

Chemistry- DrBob222
0.2g of an organic sample W, analysed by combustion analysis results in 0.48g of CO2 and 0.1636g of H2O. We had a second sample 0.2g of W again producing 0.0618g of ammonia. Show that only C, H and N exist in W and find its emperical formula.
November 30, 2013 by michelle

3.392 g of unknown oxalate product is titrated with 0.201 M KMnO4. The initial burette reading is 11.23 mL, and the final burette reading is 46.88 mL. How many moles of MnO4- were added? Once again any helpwould be greatly appreciated.
September 4, 2008 by George

how many moles of O2 would be needed to produce 1120.5 kJ of heat from the reaction: 3Fe + 2O2 yields Fe3O4+ 1120.5 kJ I got 627771.33 which I thought seemed a bit too high. My proportion was 1120.5=2 O2/1120.5. Thanks again.
May 19, 2009 by Tabetha

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