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April 17, 2014

Search: CHEM! (SCIENCE) NEED HELP

Number of results: 120,403

science(chem)
Well, you don't need solvent and you just use the sample as is.
Friday, March 28, 2008 at 5:30pm by ~christina~

science(chem) Dr.Bob-> need help on this long lab
HI
Tuesday, March 11, 2008 at 5:27pm by MP

Science 4th grade
hello i need help with science because this is goin to be my first time in science and i need help with it im 10 years old and i need help can any body help me please i need help i go to school on august 25,2008 thanks and thats all please let some one help me
Tuesday, March 25, 2008 at 12:36am by T'Ericka

science(chem)
I need help finding information on how the conway microdiffusion is done/how it works. And why the sample is titrated. Thank you
Friday, September 12, 2008 at 11:05am by ~christina~

science(chem)
I need help finding information on how the conway microdiffusion is done/how it works. And why the sample is titrated. Thank you
Saturday, September 13, 2008 at 11:09pm by ~christina~

SCIENCE/CHEM
You don't need me to do this. Balance it and add the coefficients. Or if you're having trouble, explain the problem.
Wednesday, May 12, 2010 at 9:11pm by DrBob222

Science organic chem
You need to tell us specifically what experiment you are talking about and the equilibrium you have.
Tuesday, April 27, 2010 at 3:07pm by DrBob222

science(chem)
Hm..I need to work on this from what you said since I only mentioned one isomer. Thanks for all your help Dr.Bob =D
Friday, August 31, 2007 at 10:31pm by ~christina~

In your opinion=> has it payed off for you Dr.Bob? (I need some advice)
I don't know where to start but I was thinking of changing my major to chemistry but that would require me to go to another school since mine doesn't have a chemistry major. This is rather ironic since they have all the major chem classes needed to get a chemistry degree and I...
Tuesday, March 25, 2008 at 9:50pm by ~christina~

6th grade science
I need help. Quick.I need an idea on how to do a science project that has to have somthing to do with types of energy,atmopsphere or life science. I only have 2 more weeks left. I need an idea. thanks :)
Monday, May 3, 2010 at 5:07pm by gill

6th grade science
I need help. Quick.I need an idea on how to do a science project that has to have somthing to do with types of energy,atmopsphere or life science. I only have 2 more weeks left. I need an idea. thanks :)
Monday, May 3, 2010 at 5:08pm by gill

CHEM! (SCIENCE) NEED HELP
Balance the equation; ___Mg+__HCI->__MgCI2+__H2 How many moles of hydrogen gas are produced when 3.0 molesbof magnesium react?
Thursday, January 24, 2013 at 8:15pm by tyneisha

science(chem)
Thank you SraJMcGin, I'll check those out. If they don't turn out to be what I need, I'll ask and hopefully Dr.Bob will be here, and able to help.
Friday, September 12, 2008 at 11:05am by ~christina~

Chem
Calculate the expected volume of hot water that would be required to dissolve 0.15g of benzoic acid, vanillin, phthalic acid, salicyclic acid? You don't need to do all or any of them. I just need to know what formula to use and what to sub in and I can do the rest myself. I ...
Monday, May 25, 2009 at 1:05pm by Sam

Math
a) number of (2math, 3 science() = C(4,2) x C(6,3) =120 b) one specific scientist must be in, so need 2 other scientist = C(4,2) x C(6,2) = 90 c) 2 specific math guys must be in, but we need only 2 maths, so only need the 3 science = C(6,3) = 20 d) 2 specific science guys are ...
Thursday, February 21, 2013 at 4:15am by Reiny

CHEM! (SCIENCE) NEED HELP
According to the reaction below,if 24 moles CO2 were produced,how many moles of C2H6 were reacted? 2C2H6+7O2 -> 4CO2+6H2O
Thursday, January 24, 2013 at 5:56pm by tyneisha

science fair
I need a science fir project!! I looked on a thousand of websites online but they give no interesting idea. I am in 6th grade and i need something at a 6 grade level that is easy a science fair project that is do in 1 week. i am in 6 grade and i don't need experiments from ...
Thursday, April 26, 2012 at 5:18pm by Aisha

science (chem)
No need to count atoms/molecules. In 3.0 moles, there are 9.0 moles of S In .40 moles, there are .80 moles of Al ions
Friday, September 30, 2011 at 6:46pm by Steve

chemistry=>Dr.Bob222
I was wondering why the individual ask the question when it seemed kind of straight forward. Sometimes I want to answer a question, but I am not sure what they are asking, or I'm not sure concerning the concept if I haven't done a particular type of problem in a while. So, I ...
Wednesday, August 7, 2013 at 11:46pm by Devron

science need help Ms. sue
What are the materials I need for my science project. my science project is "How does stress affect your body"
Monday, October 28, 2013 at 8:52pm by ingrid

chem help
You need to produce a buffer solution that has a pH of 5.08. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The of acetic acid is 4.74.
Saturday, February 28, 2009 at 11:05pm by chem

Science
Here's the chemical equation, but you need to balance it still: CuCl2 + NaNO3 => Cu(NO3)2 + NaCl The reactant that produces the lesser amount of product is the limiting reagent. Here's an example problem: http://www.chem.tamu.edu/class/majors/tutorialnotefiles/limiting.htm
Wednesday, May 9, 2012 at 3:58pm by TutorCat

Chem Help!
I really need help with this question for my chem H.W. 1) On a summer day in Breckenridge, Colorado, the atmospheric pressure is 525 mm Hg. What is this air pressure in atmospheres? (round to the hundredths place) atm
Thursday, April 10, 2008 at 12:34pm by Lisa

Science
thank you...I hope people answer with good statements saying why need the most votes for science class. need as many as possible.
Thursday, October 14, 2010 at 3:41pm by Alexis

science
i need help writing up the discussion for a science experiment. I need to know what to include and say in it.
Monday, March 2, 2009 at 5:03am by casey

CHEM
I worked this earlier for someone. I can look it up if you need it. Or do you just need to ask a question about it?
Friday, February 10, 2012 at 6:32pm by DrBob222

science(chem)
To make constitutional isomers of a dichloro propane, one structure will need a Cl on carbon 1 and another one on carbon 2. Another isomer would need to have a a Cl atom on C1 and another on C3. A third isomer would have both Cl atoms on C1. I THINK that is all of them.
Friday, August 31, 2007 at 10:31pm by DrBob222

Chem Lab
This is a limiting reagent problem and you don't have enough information to work the problem. You have 3.5 mL acetic anhydride and you need to convert that to mols. You need the density of the acetic anhydride to convert 3.5 mL to grams. Here is a site that will show you how ...
Friday, November 2, 2012 at 12:52am by DrBob222

ap chemistry
I agree on the tutor. Also, get another text (college used book store) to see the same material in differing words. On the ap chem board exam, nationally, most do not do well. I have to be honest, most ap chem students need to retake college chem if for nothing else, the lab ...
Sunday, November 4, 2012 at 4:07pm by bobpursley

Science
I really do need help finding Science Fair Ideas. Hellppppppp Meeee!!!! Oh yeah I'm in 5th grade!! I need help finding Science Fair Ideas.
Thursday, September 22, 2011 at 12:42pm by Jesse Ariel Parker

science(chem)
I have no idea how it would look in a drawing but I presume it would show two molecules if it was a 2:1 ratio. However, you need not worry about that because it is a 1:1 reaction. 1 mol alcohol + 1 mol acid produces 1 mol of the ester.
Monday, October 8, 2007 at 12:26am by DrBob222

science
hi i need help with science well see my teacher told us that we needed to do a science fair project but i don't know what i should do..????? u think u could give me some ideas to do for a science project????
Thursday, February 21, 2008 at 8:15pm by justine

Biology (Science)
Why is water a polar molecule? Please read: (Broken Link Removed) AND http://ghs.gresham.k12.or.us/science/ps/sci/ibbio/chem/notes/chpt2/polar.htm
Monday, September 25, 2006 at 6:46pm by Dakota

need ideas on science fair project!!
im doing a science fair project on teeth.... and i need ideas. i hve already tried what kind of soda affects the tooth most, and i need more ideas! plz help!!
Saturday, January 24, 2009 at 6:28am by applepies...

science
......I have a science project and i have to build a toy that contains a level and can convert potential into kinetic energy. I need help i need an example something!!!!!
Tuesday, November 13, 2007 at 7:52pm by taylor

Science/English
I still need the help of a science teacher. I urgently need to know where to look for English vocabulary used to describe the equipment of both a chemistry and a computer laboratory.
Monday, January 23, 2012 at 7:09pm by Henry2

science (chem)
I'm actually doing a homework assignment where you have to draw the structure into program...it's killer..I drew it with the double bond and the computer said incorrect. It's for organic chem. I'll try the triple bond and see what happens...I don't like drawing on the computer...
Friday, August 31, 2007 at 10:01pm by ~christina~

science (chem)
I'm actually doing a homework assignment where you have to draw the structure into program...it's killer..I drew it with the double bond and the computer said incorrect. It's for organic chem. I'll try the triple bond and see what happens...I don't like drawing on the computer...
Friday, August 31, 2007 at 10:01pm by ~christina~

7th grade science
Ok, I kinda need help, ackward for me to do this, but I want to know if I need to put the name of my topic in my bibliography, does it mean the main thing or idea of my science project? It's called: How Do Various Types of Fertilizers Change the Growth Characteristics of Plants?
Sunday, November 7, 2010 at 7:37pm by Nathan

science
i need help on my science crossword puzzle ok,what do you need help on?
Tuesday, October 10, 2006 at 8:41pm by bob

science
ok i need to talk to you about something that i really need a lot of help with would be alright i can ask you the question that i need help with
Thursday, April 4, 2013 at 6:03pm by lola

Chem
Chemistry - A mixture of chromium and zinc weighing .362 g was reacted with an ... chemistry - Plastic articles can be chromium-plated by coating them with thin ... chem - Zinc dissolves in acid according to the balanced equation. Zn(s)+ 2H(aq... chem - Zinc dissolves in acid ...
Sunday, February 25, 2007 at 5:26pm by Anonymous

Chem
Chemistry - A mixture of chromium and zinc weighing .362 g was reacted with an ... chemistry - Plastic articles can be chromium-plated by coating them with thin ... chem - Zinc dissolves in acid according to the balanced equation. Zn(s)+ 2H(aq... chem - Zinc dissolves in acid ...
Sunday, February 25, 2007 at 5:26pm by Anonymous

Chem
Chemistry - A mixture of chromium and zinc weighing .362 g was reacted with an ... chemistry - Plastic articles can be chromium-plated by coating them with thin ... chem - Zinc dissolves in acid according to the balanced equation. Zn(s)+ 2H(aq... chem - Zinc dissolves in acid ...
Sunday, February 25, 2007 at 5:26pm by Anonymous

Organic Chem Lab
Assume your unknown ketone is 2-pentanone. What is the molar mass of your 2,4-dinitrophenylhydrazone product? I don't need or even want the answer, I just need an explanation of how to start working the problem. Thanks!
Saturday, July 2, 2011 at 7:20pm by Sarah

actuarial science
To get into an actuarial science program I was wondering was sort of high school courses I would need to take and what kind of marks I'd need to acheive. I`ve tried googling this but I can't seem to find information on this anywhere :S
Thursday, February 19, 2009 at 7:48pm by Lena

science
Thank you for using the Jiskha Homework Help Forum. Hopefully the following will assist you: 1. (Broken Link Removed) 2. http://en.wikipedia.org/wiki/Polymer_chemistry 3. http://chem.chem.rochester.edu/~chem421/famous.htm
Tuesday, April 22, 2008 at 6:06pm by SraJMcGin

science
physical science i'm doing this for a science fair and i need an idea of what i'll be doing
Saturday, December 8, 2007 at 9:49pm by anonymous

CHEM! (SCIENCE) NEED HELP
when you balance it...and it is very easy... Mg+2HCl>>MgCl2 + H2 you see that for each mole of Mg, you get one mole of H2. So for three moles of Mg, you get....
Thursday, January 24, 2013 at 8:15pm by bobpursley

CHEM! (SCIENCE) NEED HELP
Determine the moles of aluminum acetate,AL(C2H3O2)3,that can be made if you do this reaction with 12 moles of acetic acid (C2H3O2H) C2H3O2H+AL(OH)3->AL(C2H3O2)3+3H2O
Thursday, January 24, 2013 at 6:00pm by tyneisha

science
i need an acrostics for punnett square!! i hv to have it by tommorrow and i cant think of anything and my science book isnt hellping much at all!!!! pwease helppp!and not an acrostics poem... i just need an acrostics
Tuesday, December 6, 2011 at 6:56pm by iljb

chem/science
Please predict what will happen. Im not very good in chem. Iron metal and pb(NO3) Lead metal and Mg(9NO3)2 Copper metal and AL(NO3)3 Lead metal and AgNO3
Thursday, April 18, 2013 at 8:44pm by jim

Science
Ms.Sue, Can you help me on mine? It is the science one. Just go to the list where it says current questions then you will see science then it will say This Girl. That is me. I really need help. I am starting to fail science and my semester is almost up. Thanks, This Girl
Thursday, December 6, 2012 at 1:41pm by This Girl

science (chem)
an addition to this is Why doesn't my lab in organic chem use plastic pipettes? Is it going to react with the organic solvent if you do use it instead of glass? And it's kind of annoying that the liquid in the pipette has a tendency to go into the bulb while I'm transfering ...
Sunday, September 9, 2007 at 10:16pm by ~christina~

Chem
You need to know the solubility rules. Here is a simplified set. http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
Sunday, February 13, 2011 at 7:22pm by DrBob222

Chem 2
i need help setting this problem up i know what the answer is but need to know how to get to it. calculate the kinetic energy in joules of an automobile weighing 2135lb and traveling at 55 mph (1 mile=1.6093km, 1lb=453.59g)
Friday, March 30, 2012 at 1:39pm by Debbie

Science
I need to make an acrostic poem for science. My teacher said that each letter needs to start a sentence about plant life. The word is photosynthesis. I need some ideas by the 13th of June. I already have p-h-o-t of photosynthesis. Pls help me!
Friday, June 10, 2011 at 1:38am by Hanna

science and social studies
Obviously, you need another science teacher. If you have any specific questions, ask. If all you typed is serious, you have serious needs. You need to discuss them with your parents.
Thursday, January 7, 2010 at 9:01am by bobpursley

Science Helpers
My science post is almost at the bottom and I need it to be checked urgently. I see science helpers on this site as of right now.--Can you please have a moment to look at my Science post. Thank you very much in advance:-)
Tuesday, April 6, 2010 at 8:33pm by Sara

science
what are the answers to the ecosystems packet for 7th grade in science? I need the answers asap because i need to finish getting all of the answers to the packet so i can study it tonight because i need to make up the test to that packet and it is because the day my teacher ...
Thursday, April 4, 2013 at 5:35pm by lola

CHEM HELP?!
thank you!
Monday, February 16, 2009 at 7:54pm by i need help!

science(chem)
I was thinking that they were the same but wasn't sure since the examples in the program were only of flipping the structure vertically not horizontally and I wanted to be sure since I haven't done organic chem in a long time. If it was a constitutional isomer wouldn't they ...
Friday, August 31, 2007 at 10:31pm by ~christina~

science(chem)
Oh..okay.
Monday, May 5, 2008 at 12:14am by ~christina~

CHEM! (SCIENCE) NEED HELP
24 moles of CO2 *(2 moles of C2H6/4 moles of CO2) =12 moles of C2H6
Thursday, January 24, 2013 at 5:56pm by Devron

SCIENCE/CHEM
Al2(SO4)3 + Ca(OH)2-->Al(OH)3 + CaSO4 No. You need the practice. Here is how you start. Right off the bat I see 3 SO4 on the left so we stick a 3 for CaSO4. That takes care of a chunk. I would balance Al next, then count up H and balance them.
Wednesday, May 12, 2010 at 9:11pm by DrBob222

chem
i need help
Wednesday, April 7, 2010 at 8:59pm by amy

science (chem)
What solvents?
Sunday, September 9, 2007 at 2:39pm by DrBob222

science(chem)
Thank You Bob
Sunday, October 7, 2007 at 10:07pm by ~christina~

science-chem
for part a? and how did you get that? thanks.
Thursday, September 17, 2009 at 5:24pm by Ally

science(chem)
university
Monday, July 16, 2007 at 4:23pm by sanad

SCIENCE/CHEM
right
Wednesday, May 12, 2010 at 9:12pm by DrBob222

science (chem)
lol
Friday, June 22, 2007 at 7:27pm by jh

science(chem)
I found the other site. Here it is. http://www.haverford.edu/chem/Scarrow/GenChem/acidbase/buffer_prep.html The usual biochemistry buffers means one thing and analytical chemists express buffers another way (or I may be out of touch with the new day thinking). At any rate, a 0...
Sunday, September 21, 2008 at 11:28pm by DrBob222

heat/science Xtremely important
Please help! I need a good website for HEAT in science! I'm in 8grade and I need info on heat http://www.school-for-champions.com/science/heat.htm
Wednesday, January 3, 2007 at 4:15pm by kp

science
please help me i am in 4th grade and i need help on my science project. my science project is, is smiling contagious and i have no idea what to do for research and data
Sunday, November 25, 2012 at 7:59pm by kaylee

science(chem)
How would I make a 5% solution of sodium bisulfite? sodium bisulfite: NaHSO3 Molar mass: 104.06 g/mol is it 5% w/w or v/v or w/v b/c if it was w/w then it would be weight percent w/w= weight solute/ weight solution* 100 I need help on this Thanks
Sunday, November 4, 2007 at 4:40pm by ~christina~

Chem 2
need to figure out how to calculate. the value of DeltaH for the reaction below is -72kj_____kj of heat are released when 1.0 mole of HBr is formed in this reaction. H2(g)*Br2(g)> 2HBr(g) I know the answer is 36 but need help
Friday, March 30, 2012 at 3:14pm by Debbie

Science
What is a good science project to do? I am in 8th grade and am studying earth science. I need to present the project in front of class. Im really nervouse.
Sunday, January 27, 2008 at 3:18pm by Katy

chem
Don't we need the density?
Sunday, August 29, 2010 at 8:42pm by DrBob222

chem
Don't you need to know these? What do you not understand?
Wednesday, March 12, 2014 at 8:53pm by DrBob222

Science
I'm in 6th grade and I need help for my science project. I don't even know what to do. Any fun science projects for 6th graders?
Saturday, May 21, 2011 at 12:51pm by Marissa

science(chem)
what is a distribution coefficent?
Saturday, September 8, 2007 at 10:59pm by ~christina~

science(chem)
Thanks Dr.Bob =)
Thursday, September 27, 2007 at 10:49pm by ~christina~

science(chem)
okay Thanks Dr.Bob
Sunday, November 4, 2007 at 4:40pm by ~christina~

science (chem)
Oh and Thank you for your help Dr.Bob =D
Wednesday, February 27, 2008 at 10:04pm by ~christina~

science(chem)
Thank you Dr.Bob
Friday, March 28, 2008 at 5:30pm by ~christina~

science(chem)
Thanks Dr.Bob
Monday, April 14, 2008 at 5:44am by ~christina~

science-chem
correct on both.
Thursday, September 17, 2009 at 3:08pm by bobpursley

science /chem
1.250X10^3 ....hows that???
Wednesday, May 12, 2010 at 9:08pm by Andy

science /chem
yup that's right
Wednesday, May 12, 2010 at 9:08pm by Bob

Science/Chem
2.408E24
Sunday, February 4, 2007 at 7:22pm by Griselda Gandarilla

chemistry
i have to do a "chemistry of cooking" project for my chem class. for the project i need to convert pounds, grams, and ounces into moles, but i do not know how. for example, i need to convert 453.5g of beef into mols. how do i do that? do i need to know the chemical formula of ...
Thursday, February 18, 2010 at 12:21am by joyce

Science
I need some ideas for a science project on animal cells. For each structure I need to find an everyday object which has a similar job or function as that cell part. For example, the nucleus is like a brain. My list includes Lysosome, Golgi Body, Nucleolus, Mitochonrion, ...
Tuesday, October 2, 2007 at 7:48pm by Mary

chem
i don't know how to solve this. looked through all my note but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g) at 1 atm and 0 ...
Saturday, April 16, 2011 at 8:38pm by marie

Chem
You need to know the solubility rules. Here is a simple set of rules that will cover most (not all) salts. http://www.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html For example, NH4Cl + H2SO4. the possible combinations, if you look at a double replacement reaction, is HCl + ...
Wednesday, June 25, 2008 at 2:57pm by DrBob222

Science
How do I read this: "Robotic" World of Computer Science. Gale, 2002. Gale Science in Context. web 8 Aug. 2012. i know this is a ciation but I need to incorporate it into asummary paragraph
Thursday, August 30, 2012 at 1:01pm by Vicky

science fair
I need to do a project for the science fair but I don't know what to do. My science teacher says it has to be like the water dancing on a penny, everything has to be the same but you have to change one thing. What can I do?????? HELP ME PLEASE :/
Tuesday, October 9, 2012 at 7:08pm by Molisa

AP Chem
I looked at the first four, they are right. Dont you work with someone on chem homework? Like a study group? That is a very effective way to work chem and physics problems.
Wednesday, November 19, 2008 at 11:22am by bobpursley

Science
I need some answers for my science essay... We have a research report and I cannot find these answers ANYWHERE. The sport I chose for the assignment was Quidditch (awesome, right?) and I cannot find work for a bludger, quaffle, golden snitch, or players. I need at least two ...
Thursday, May 26, 2011 at 12:11pm by Rain

chem
Do you still need help on this one?
Friday, November 16, 2007 at 5:45pm by DrBob222

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