Search: re-apchem post

Number of results: 21,197

APChem
thank you!
Sunday, March 7, 2010 at 12:44pm by Kiki

apchem
what is the density of vinegar? thanks
Tuesday, March 16, 2010 at 3:22pm by urgent

re-apchem post
Yes and no. You add the moles CO2 to moles H2O and use that for n but there should be no CH4 or O2 remaining if all of the CH4 and O2 have reacted. Moles H2O will be twice that of CO2.
Sunday, April 12, 2009 at 8:51pm by DrBob222

chemistry
(.1M-.0065M)/(100sec)=3.5e-5
Wednesday, November 17, 2010 at 10:30pm by Apchem geek

apchem
can someone explain the synthesis reaction from ethane to acetylene?
Sunday, May 22, 2011 at 11:18pm by anon

apchem PLease Answer
What is the equation for HOCl dissolves in HOH? I don't get it...
Monday, April 19, 2010 at 6:26am by Kiki

APChem
Hi Does red cabbage contain one or many anthocyanins & how do you know? this really helps--thank you!
Saturday, February 27, 2010 at 2:01am by Kiki

Apchem
What are the initial conditions on the ICE table for the common-ion effect?
Friday, February 26, 2010 at 7:10pm by Riley226

apchem
For a typical commercial vinegar with a 5% acetic acid content, the density is about 1.01 grams per milliliter.
Tuesday, March 16, 2010 at 3:22pm by Alan

APChem
does anyone know a good website i could look at so i could answer this question: ? Explain how indicators work using a chemical reaction as part of your explanation. Any websites? please? thank you!!
Saturday, February 27, 2010 at 8:58pm by Kiki

APChem--correction
No, I goofed in the last sentence. The acid will use the same amount ........ ml too high in the denominator makes the fraction too SMALL and the calculated molar mass will be too low.
Sunday, March 7, 2010 at 9:00pm by DrBob222

ap chemistry
it's 8*10^-6 because the hydroxide concentration is squared. trust me, we went over this in my ap chem class (I got that originally wrong too)
Tuesday, October 19, 2010 at 9:40pm by apchem

APChem
Yes, it's true. Too much strong acid OR too much strong base will exceed the buffering capacity of the solution.
Sunday, March 7, 2010 at 12:44pm by DrBob222

Apchem
Common ion effect can take place any time in a process where a common ion is added; therefore, the so-called initial concentration can be any number from zero and up.
Friday, February 26, 2010 at 7:10pm by DrBob222

APCHEm urgent!!!!!!
Cu(NH3)4^+2 + 4H^+ ==> 4NH4^+ + Cu^+2 The solubility of Hg2Cl2 in acid depends upon the acid used. My sources say Hg2Cl3 is soluble in HNO3.
Monday, March 15, 2010 at 6:55am by DrBob222

APCHEm urgent!!!!!!
Hi thank you so much!!!! What is a net ionic equation for the reaction of H+ with Cu(NH3)4 ^2+ ALSO what is the net ionic equation for the reaction of H+ with Hg2Cl2 Does the H+ addition increase, decrease, or has no impact on the solubility of the salt.?
Monday, March 15, 2010 at 6:55am by Kiki

APChem
Hi! Thank you for your help... A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 66.2 mL of KOH is ______M. (The answer is supposed to be 1.00X10^-7) How do I set this problem up? I realize that it is a ...
Sunday, March 21, 2010 at 10:34pm by Kiki

English
Writing for eli = when you post under someone else's post, John's in this case, we assume you are answering his post. If this is a new post, please select "new post" at the top and repost. Sra
Friday, September 19, 2008 at 4:48pm by SraJMcGin

APChem
Is this true or false?:A buffer can be destroyed by adding too much strong acid. I thought that a buffer can be destroyed by adding too much weak acid, but I'm not sure...
Sunday, March 7, 2010 at 12:44pm by Kiki

me too--Bob Pursley
Some of my posts will not post even if they contain no links. On those I can post a sentence or two (test post or another test post) but longer posts in answering a question will not post at all.
Friday, March 23, 2012 at 9:59pm by DrBob222

APChem
Hi I tried to understand this but I don't know why the answer is B: Which one of the following pairs cannot be mixed together to form a buffer solution: A) NaC2H3O2, HCl B)RbOH, HBr C) NH3, NH4Cl D) H3PO4, KH2PO4 E) KOH, HF The answer is B but could you explain why? I know...
Sunday, March 21, 2010 at 10:38pm by Kiki

apchem
A 15.0g sample of liquid ethanol, C2H5OH, absorbs 5.13x10^3 J of heat at its normal boiling point, 78.0C. The molar enthalpy of vaporization of ethanol is 39.3kJ/mol. (a) What volume of ethanol vapor is produced? The voume is measured at 78.0C and 1.00atm pressure. (b) What ...
Sunday, January 27, 2008 at 4:32pm by alk

APChem
I think you omitted the van't Hoff factor for SrSO4. There are two particles so P = iMRT which makes the molarity just 1/2 of your number = ?? Since that is the solubility of SrSO4, then SrSO4(s) ==> Sr^+ + SO4^-2 Ksp = (Sr^+)(SO4^-2) Sr^+2 = ?? SO4^-2 = ?? The ...
Wednesday, March 17, 2010 at 8:23pm by DrBob222

APChem
"The osmotic pressure of a saturated solution of strontium sulfate at 25C is 21 torr. What is the solubility product of this salt at 25C (Hint: calculate molarity from the colligative properties eqn of osmotic pressure and use it in the equilibrium expression" I ...
Wednesday, March 17, 2010 at 8:23pm by Kiki

Algebra 1A
You need to post a specific question in order for one of our math tutors to help you. Please post an assignment or a problem, and also post what YOU have done so far to solve it -- or post what it is in the problem that you don't understand.
Monday, November 24, 2008 at 4:30pm by Writeacher

APChem
mole of the first one is M x L = 0.018075 which rounds to 0.0181 to three s.f. mole of the second one is 0.0180726 which rounds to 0.0181 to three s.f. So you are at the equivalence point of a strong acid/strong base so you have the salt (which is KClO4) and water. Therefore, ...
Sunday, March 21, 2010 at 10:34pm by DrBob222

apchem PLease Answer
HOCl + H2O ==> H3O^+ + OCl^- Kiki--I just don't understand what your problem is with HOCl and HOBr. These are weak acids just like acetic acid, oxalic acid, phosphoric acid, etc. They ionize partially and the have Ka. Their salts ionize in water just as acetate ion ...
Monday, April 19, 2010 at 6:26am by DrBob222

college
ok, post as what type of math and post it as a new post or just reply back here with the question
Monday, May 10, 2010 at 9:43pm by Do

Art
please reply this post and the other post (well its not post vause u guys have to check on the site)
Monday, November 7, 2011 at 5:26pm by Laruen

Dr.Bob - about your post to a previous question
It's the post right under your last one, not the very last post.
Friday, August 24, 2007 at 12:33pm by ~christina~

Math 117
Explain how to divide a polynomial by a binomial using an example. (Please refer to the post “How to post equations” in the Main Forum to post your response with correct equations/expressions showing.) Make sure you post the explanation as well as the example.
Thursday, July 8, 2010 at 9:45pm by lovelife

language
Thank you for using the Jiskha Homework Help Forum. When you post under another post, no one might read it, thinking it is an answer to the first post. Be sure to use the "New Post" in that case. Which word is your question? today = adverb big = adjective sale = noun...
Thursday, October 4, 2007 at 12:46am by SraJMcGin

ssc
Anonymous, if your post has nothing to do with THIS post, you need to ask it separately. Look above for "Post a New Question." Sra
Saturday, May 14, 2011 at 11:36pm by SraJMcGin

Kristin, Physical Science
Just post your question. When you post under someone else's post, it's apt to be missed. Sra
Tuesday, January 19, 2010 at 11:50am by SraJMcGin

Thank You MathMate :)
For continuity, it would be easier to post it on the original post. If there is no answer, you could post a new one as you did. I am glad that it worked out. I put a grid of 51 because I had to scan the results with a "print-plot". Also, see my recommendations for ...
Tuesday, July 19, 2011 at 6:34pm by MathMate

English
We don't post email addresses on Jiskha. If you post the parts of your article that you'd like read, please post them here.
Friday, October 22, 2010 at 1:05pm by Ms. Sue

Biology
I think my questions were skipped over ignore this post if this is not so... h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 7 0 5 2 8 h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 6 9 0 4 4 please post ...
Sunday, July 4, 2010 at 5:39pm by Kate

to synclair--Chemistry
You should not post piggy back on another post. Most of the times it doesn't get answered. Go to the top of the page and make a new post.
Friday, October 5, 2012 at 11:01am by DrBob222

physics
A mass with an initial combined potential energy and kinetic energy of 10,000 joules is dropped onto a fence post to drive it into the ground. The post is driven 0.25 meters into the ground before it comes to rest with the mass sitting on top of the post. How much work was ...
Tuesday, January 24, 2012 at 12:16pm by Charles

APChem
Here is a god web site chock full of information. It may be more than you wanted but you can go through it and take what you need. If you want to look for other sites, go to www.google.com and type in pH indicators. You can also look at howstuffworks on google.http://en....
Saturday, February 27, 2010 at 8:58pm by DrBob222

chemistry
I don't know what a simsim seed is and neither does Google.com. In the future, don't piggy back on another post for a separate post but go to the "post a new question" and click on it.
Wednesday, April 29, 2009 at 11:42pm by DrBob222

History
First of all, Jenny, when you post here we believe you are answering the original post. Please use "Post a New Question" for your questions. Sra
Sunday, March 23, 2008 at 11:46pm by SraJMcGin

math
An easy way to get this answer, which will also enable you to figure it for any number of posts, is to consider each post. Connect the first post to each of the others. There are 4 streamers (to posts 2,3,4,5). Now, go to post #2. It still has to be connect to 3 posts (3,4,5...
Tuesday, September 20, 2011 at 11:18pm by Steve

psychology (tj)
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Please only post your questions once. Repeating posts will not get...
Wednesday, November 2, 2011 at 5:34pm by PsyDAG

ALGEBRA Anon.
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Please only post your questions once. Repeating posts will not get...
Friday, March 19, 2010 at 7:47am by PsyDAG

socials
I try to post and see if work. It happen to me like this that one day I be able to post the other day not. That so weird. Thanks for help with my assignments days ago ms. sue. I ask my sister to post them for me my computer not work for Jiskha. If this be able to post I be so ...
Thursday, December 15, 2011 at 10:08am by Mohammad

Math Anon.
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Second, please only post your questions once. Repeating posts will...
Thursday, March 18, 2010 at 11:10pm by PsyDAG

physics
One end of a post weighing 400 N and with height h rests on a rough horizontal surface with Ks=0.30. The upper end is held by a rope fastened to the surface and making an angle of 36.9^\circ with the post. A horizontal force F_vec is exerted on the post as shown. (Figure 1) ...
Monday, January 7, 2013 at 4:45pm by Anonymous

Chemistry!!!
Um, i dont know what your talking about. This is my first post, i saw your answers to the other post and it didn't really help so i thought i should post my own question up...rude much
Tuesday, May 18, 2010 at 6:04pm by Ashley

Physics......
A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest point over the lower ...
Thursday, November 17, 2011 at 8:56pm by ....

Physics
A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest point over the lower ...
Thursday, November 17, 2011 at 10:32pm by .Help pleaseeeeeeeee

math
An electric post was broken by a strong typhoon.It formed a right triangle with the ground.If a broken part makes an angle of 25 degrees with the other part,and the topmost part of the post which is post which is on the ground is 40 ft from the base,how tall was the post?
Saturday, March 10, 2012 at 2:20pm by NIRVANA RIZA A. GARON

WRONG
If it will let you post the comment then it will let you submit a question EXCEPT you may not post a link within the question. Students are not allowed to post a web address.
Wednesday, December 28, 2011 at 2:08pm by DrBob222

English
Seto -- Your post will likely be ignored since you posted it as an answer, not a question. Please click Post a New Question and then post it.
Thursday, April 10, 2008 at 2:26pm by Ms. Sue

algebra -- help needed
I'm sorry about the other post. I didn't post it. Whoever did post it will not be posting again on this board. I'm sorry, but I can't help you with this question, but I'm sure someone will show you how to do it.
Friday, December 5, 2008 at 2:10pm by Ms. Sue

Pre-Calculus
The angle of elevation from a point on the ground to the top of a post is 15°. The point is 100 meters from the base of the post. To the nearest meter, how tall is the post?
Thursday, January 13, 2011 at 11:45pm by Confused in Math

English
This repetition is very confusing. Would you please post only the specific questions you have right now? Please post in the Post a New Question form.
Thursday, September 1, 2011 at 10:31pm by Writeacher

to Ashana
Please go to the top of the page, click on Post a New Question, and post your own question. Questions post piggy back style often get ignored.
Wednesday, March 17, 2010 at 7:02pm by DrBob222

grammar
Oh, for sure. One way to find responses from tutors is to do this: 1. Post your question. 2. Click on it and read what you posted, and then use Ctrl + D (Command + D on a Mac) and bookmark that post. Then go back into that post until you see a response for it. Once you get ...
Wednesday, May 4, 2011 at 3:55am by Writeacher

english
Lisa -- please post your questions in a new post, not tagged onto someone else's. Please also proofread what you type before you click on Post. What you have above doesn't make sense to me.
Monday, September 12, 2011 at 11:34am by Writeacher

statistics
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Sunday, June 9, 2013 at 5:41pm by PsyDAG

Science
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Saturday, June 1, 2013 at 6:16pm by PsyDAG

statistics
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See later post.
Saturday, June 1, 2013 at 8:41pm by PsyDAG

Statistics
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Saturday, May 25, 2013 at 11:22pm by PsyDAG

math
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Thursday, May 16, 2013 at 6:08pm by PsyDAG

statistics
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your previous post.
Wednesday, May 8, 2013 at 12:12pm by PsyDAG

stats
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Monday, May 6, 2013 at 9:11pm by PsyDAG

Probability
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See you later post.
Saturday, May 4, 2013 at 1:49pm by PsyDAG

math
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See later post.
Monday, April 22, 2013 at 10:20pm by PsyDAG

Math
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your previous post.
Friday, April 19, 2013 at 12:28pm by PsyDAG

math
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See later post.
Wednesday, April 10, 2013 at 7:30pm by PsyDAG

Algebra 1
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Friday, April 5, 2013 at 12:23am by PsyDAG

algebra
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Wednesday, April 3, 2013 at 10:30pm by PsyDAG

science
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Wednesday, February 20, 2013 at 4:23pm by PsyDAG

Statistics
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See Quala's post.
Sunday, February 17, 2013 at 3:54pm by PsyDAG

math
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your previous post.
Wednesday, January 30, 2013 at 5:52pm by PsyDAG

Geometry
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Wednesday, January 2, 2013 at 12:22pm by PsyDAG

Maths
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Saturday, December 22, 2012 at 3:43pm by PsyDAG

psychology
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Tuesday, December 4, 2012 at 11:54pm by PsyDAG

posibility
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See you later post.
Monday, November 26, 2012 at 9:33pm by PsyDAG

STATISTICS
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Monday, November 26, 2012 at 7:19am by PsyDAG

Math
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Saturday, November 24, 2012 at 3:29pm by PsyDAG

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