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September 16, 2014

Search: CHEM! (SCIENCE) NEED HELP

Number of results: 57,699

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
September 12, 2008 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
September 13, 2008 by ~christina~

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?
January 24, 2013 by tyneisha

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 ...
May 25, 2009 by Sam

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
January 24, 2013 by tyneisha

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 :)
May 3, 2010 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 :)
May 3, 2010 by gill

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
April 10, 2008 by Lisa

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 ...
April 26, 2012 by Aisha

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
September 25, 2006 by Dakota

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
January 24, 2013 by tyneisha

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"
October 28, 2013 by ingrid

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

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
April 18, 2013 by jim

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!!!!!
November 13, 2007 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.
January 23, 2012 by Henry2

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!
July 2, 2011 by Sarah

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)
March 30, 2012 by Debbie

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!!
January 24, 2009 by applepies...

Chem Help!
I really need help for my homework on balancing equations please show all the work including the coeffients if needed. I need help with 3 questions, 1) NaN3 -> Na + N2 2) NO2 + O2 -> NO + 03 3) LiOH + CO2 -> Li2CO3 + H2O
March 15, 2008 by Tania

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.
September 22, 2011 by Jesse Ariel Parker

science(chem)
what is a distribution coefficent?
September 8, 2007 by ~christina~

chem -repost for bobpursley
i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g...
April 17, 2011 by please, help me

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
February 19, 2009 by Lena

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
December 6, 2011 by iljb

chem
i need help
April 7, 2010 by amy

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:-)
April 6, 2010 by Sara

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
March 30, 2012 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!
June 10, 2011 by Hanna

science
help with the chem lab. the molecular of a volatile liquid.
November 29, 2007 by Bmt

SCIENCE/CHEM
how many electrons can be contained in all orbitals with n=4??????
May 12, 2010 by Andy

Chem/science
what is the ph of 2.62 x 10 ^-2 M HBr solution? I get 5.94 is that right? thanks andy
May 23, 2010 by Andy

CHEM! (SCIENCE) NEED HELP
How many moles of water will form if the reaction has 9 moles of Cu? how many moles of NO will form if the reaction has 9 moles of Cu? 3Cu+8HNO3->3Cu(NO3)2+4H2O+2NO
January 24, 2013 by tyneisha

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
November 4, 2007 by ~christina~

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 ...
April 4, 2013 by lola

chem
need help on chemistry below
January 7, 2009 by lyne

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 ...
April 16, 2011 by marie

science
Dr bob, can you check my reply to chem question from andy thanx
May 10, 2010 by Andy

Chem/science
What is the conjugate acid of HC5H6O4-?? Is it HC5H6O42-?? thanks andy...
May 23, 2010 by Andy

SCIENCE/CHEM
the purity of zinc is to be determined by measuring the amount of hydrogen formed when a weighed sample of zinc reacts with an excess of HCL acid.the sample weighs 0.198 grams. what amount of hydrogen gas at STP will be obtained if the zinc is 100% pure? need a metric answer ...
May 12, 2010 by Andy

Advice...about chemistry degree Dr.Bob
Based on the question topic posted by Britney below titled:In your opinion (your answer to this reminded me of something) (I posted the same thing there but I thought it was improper to piggyback on that post so I posted this under a new topic) I don't know where to start but ...
March 25, 2008 by ~christina~

science
i need help on my science crossword puzzle ok,what do you need help on?
October 10, 2006 by bob

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
November 25, 2012 by kaylee

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.
January 27, 2008 by Katy

science(chem)
I synthesized Nylon in my lab for organic chem. I need help figuring out the theoretical yield so I can compare it to my product that I synthesized. I looked up the reaction online on Google by typing in "Synthesis of adipoyl chloride and nylon 6.6." I clicked on the first ...
February 16, 2008 by ~christina~

science: ap chem
is NaH2CO3 soluble and separate into Na+ and H2CO3- ions?
April 19, 2010 by anonymous

science /chem
1250.37986 rounded to four significant figures is ??????
May 12, 2010 by Andy

science/chem
Why do the d and f block elements have only 2 valence electrons?
February 21, 2011 by missy

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
January 3, 2007 by kp

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
August 30, 2012 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 :/
October 9, 2012 by Molisa

chem
i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g...
April 17, 2011 by marie

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?
May 21, 2011 by Marissa

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, ...
October 2, 2007 by Mary

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 ...
February 18, 2010 by joyce

chem- science - grd 11
okay so i have to prepare a procedure for the following experiment, except i have no clue what to do question- the science department had 5 different solutions but accidently lost thier labels. devise a procedure to help you determine which liquid is what? *hint- you may use ...
January 7, 2010 by just wondering

Psychology
Need help double checking these tricky psychology questions. I put an asterix (*)next to my answers, Thanks! Which of the following fields is the best example of psychology as a basic science? A-Educational psychology B-industrial organizational psychology *C-social psychology...
September 11, 2012 by Lilly

chem- repost
i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g...
April 17, 2011 by please, help me x(

chem- repost
i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g...
April 17, 2011 by please, help me x(

chem- repost
i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g...
April 17, 2011 by please, help me

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 ...
May 26, 2011 by Rain

science
hey im doing my science homework and i really need hel fast cuz i need a discription(definition), a sentence, and a pic. for thermal expansion, exfoliation, dissolution, oxidation, and hydrolysis i would look in my text book but none of those words are in there i know because ...
January 10, 2013 by Kiara

Chem Urgent!
I need help in balancing equation for NO2 + O2 -> NO + O3 Please help...
March 15, 2008 by Lily

Chem
How many grams of NaOH9(m.w.=40) do you need to prepare 200ml of .5M NaOH
November 25, 2012 by Gonzalo

Science/Chem
How many representative particles are in 2.5 mol H2O2? each mole consists of 6.02*10^23 things. Memorize that.
February 4, 2007 by Dennis

SCIENCE/CHEM
when the following equation is balanced , what is the sum of the co-efficients? AL2(SO4)^3+Ca(OH)2-->Al(OH)3+CaSO4
May 12, 2010 by Andy

CHEM! (SCIENCE) NEED HELP
How many moles of CaCI2 will be formed if you react 1 mole HCI? How many moles of CaCI2 will form if you react 5.5 moles of CaCO3? 2 HCI+CaCO3->CaCI2+H2O+CO2
January 24, 2013 by tyneisha

Psychology
Need help double checking these tricky psychology questions. I put an asterix (*)next to my answers, Thanks! Which of the following fields is the best example of psychology as a basic science? A-Educational psychology B-industrial organizational psychology *C-social psychology...
September 12, 2012 by Lilly

science-chem
if i am given 2 pairs of aqueous solutions and I need to know which one has lower electrical conductivity? Are my answers correct? Ex/1M magneisium bromide and 1M lithium bromide.....Litium Bro. has lower electrical conductivity Ex? 1M Potassium phosphate or 1 M potassium ...
September 17, 2009 by Ally

chem
i need to balance this redox euation Mn+2 +H2O2----- MnO2 + H2O
August 4, 2010 by Lawryn

Chemistry
Is DrBob222 available tonight? Please let me know, I need some chem help.
October 11, 2010 by Karen

science
tell me about science apparatus They are used in science. You need a much more specific question to get a useful answer. For instance: What is the Hoffman apparatus, and how is it used?
January 28, 2007 by rick

chem
1. A single mole of AgNo3 weighs 169.88 grams. In order to make a 1M solution, how many grams of AgNo3 would need to be dissolved in 5oomL? How many moles do you need? moles = M x L. please help today
December 1, 2010 by moon

science
I really need some help...so please give me an acrostic for the word; "science"
June 11, 2008 by crhris

science
i am doing a science project and i need to kno how flares work, and what the ingredients are. can someone help me?
May 3, 2009 by logan

science
i need to preapare a project on science .... any sort of experinment.... what can be done that is intresting and then easy....
January 7, 2011 by sanyukta

science
need a science project for 7th grade using toy train.
January 29, 2011 by mateo

science
Hi, tomorrow is my science practical and i need help with independent and dependent variables. PLEASE HELP
March 29, 2012 by Sheil

Science
I need some ideas for a science project. I need to find a picture of 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, cell membrane nucleolus, mitochondrion, endoplasmic ...
October 3, 2007 by Mary

science
i need help to unscramble some words for my science homework pls help me
August 28, 2008 by ignacio

science
I need a slogan for neon for this science project my teacher assigned
November 9, 2009 by not4u2kno

Science
I need to know how Science is invovled in this: How The color of your test affects your grade.
November 26, 2010 by Luna

Science
Where can I find AP Environmental Science old AP exams? I need to study.
April 29, 2011 by Andrew

science
1:an example of chromotography? please i need these science questions by tomorrow :(
September 4, 2011 by Abii

chem
help me i hev a lab You need to post a question with details about what yo don't understand.
March 21, 2007 by cool

chem
a student has to prepare 3 liters of a 1.5 M solution of C6H12 O6. What mass of C6H12O6 does she need?
December 2, 2010 by Desiree

chem
calories need to melt 60.0 of ice at 0 and to warm the liquid to 65 (two steps)
September 12, 2011 by miguel

chem
What does it mean by Keq? Pls need an explanation with this. I'm a little bit confused. Thanks
December 3, 2012 by Bea Alonzo

Chem
If you need 2.74 moles of acetic acid how many liters of your vineger must you take
April 28, 2013 by Connie

Science
I am doing a science project but i need to know what is inside a flare stick and how it relates to alkine metals.
April 28, 2009 by Logan

science
i need this questioned answered or... i will flunk out of science HELP ME!!! What are the end products of respiration????
November 17, 2009 by lendcy

Science 8R - help!
I need a definition for Lines of force (8th grade science regents level, ny)
December 17, 2012 by Laruen

science
1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study ...
June 17, 2009 by matt

Science
I NEED Steve Turek's e-mail for science class!! But I don't know how to get it. HELP!!
February 29, 2008 by Taylor

science
i need a science fair project that will last more than a week
February 24, 2011 by pavleen

Chem.
I need a 64% solution of ammonium chloride. I have 99% ammonium chloride powder. How many grams of the NH4CL do i need to add to 500 ml of water to get the 64% solution?
June 20, 2013 by John

science
i need help with these questions because i need to write a report on it helpp please What are the implications of stem cell reasearch for today and future generations What are stem cells? What are they capable of? How are they used in science/ medicine presently? What ...
September 23, 2007 by chelsea

Science
Could someone please have a moment to look at my science posts. I really need help on them. I'll appreciate all your help, thanks:-)
May 4, 2010 by Sara

Science Fair Project
I need help thinking of a topic for an highschool science fair project the actual topic not a link please i really need help thinking of one Testing the water in your school for lead. DOES SODA LOSE IT;S CARBONATION FASTER AT LOW OR HIGH TEMPERATURE
August 13, 2006 by nique

Gen Chem II
How many mL of 0.0875 M H2SO4 would you need to exactly neutralize 50.00 mL of 0.135 M NaOH?
February 8, 2010 by KiKi

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