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October 31, 2014

Search: Chemistry --really need help!

Number of results: 78,904

9th grade living enviroment
I Really need help i need 2 write in a paragraph a correalational study i really really need help.. PLEASE
October 10, 2012 by ebony

english
hay i really really need help!!! im doing a poem project and it invloves explainig what does "no time to turn at beautys glance and watch her feet and how they can dance"means pleasee help me i really need help:)
June 15, 2011 by priya

math
how do u divide fractions? i really need help with this. i need to know all the steps. plese post the steps.i really need them before 9 oclock tonight. please help. thank u very much...
March 25, 2009 by elenny

general
I really don't like the fact that you guys are skipping so many questions we need help here and were not getting it. i understand that no one knows everything but, please don't skip the questions its really hard when i need help and no one is helping me. The least you can do ...
March 28, 2012 by Anonymous

I REALLY NEED HELP IN SCIENCE Plz !!!
If you double the concentrate of yeast in the dough how do you think your results might change ??? Please I really do need help in this thanks
December 13, 2012 by Crystal

Chemistry (really need quick help)
Balance the following equations. (Use the lowest possible coefficients. These may be zero.) (a) As(s) + ClO3-(aq) ---> H3AsO3(aq) + HClO(aq) (acidic solution) I am using half-reactions but I dont really get this at all. Can someone explain?
May 5, 2011 by Samantha

Grade 6 LA
I really need 3 action words for mp3? I need this right now so someone really help me!
February 8, 2012 by I really need help ASAP

Grade 6 LA
I really need 3 action words for mp3? I need this right now so someone really help me!
February 8, 2012 by I really need help ASAP

PLEASE HELP!!!! I NEED IT QUICKLY!!!
Hey guys! I need some help on improving my vocal cords for my music class. I am 13 and I really need help with singing. My teacher says my voice sounds terrible and I would really like to sound pretty. Does anyone have any ideas on what I could do instead of buying something????
April 10, 2014 by Hallie

Chemistry
I really need help with this; it'll be the last chemistry question I ask: 44. Identify the type of reaction. a. AB ---> A+B b. AB + C--> AC + B c. AB + CD --> AD + CB Thanks -MC
November 3, 2010 by mysterychicken

EVERYONE
HI. For one of my classes i need to invent/innovate a product. So it is a year long project and if anyone has anyone sort of ideas it would be really helpful. Thanks (Thin along the lines of what you really hate and need fixed)
September 29, 2014 by Ashley

HELP PLEASE
I'm really, really, really, sorry but I seriously need help. I can't find a TIMELINE of George Vancouver's special journeys and events. PLEASE HELP ME!!! IT WILL MEAN SO MUCH TO ME!
October 14, 2007 by Lily

Chemistry
Can anyone help me with some topics to write about on what chemistry has to do with mechanical engineering. Anyone's help would be appreciated because I really need to finish this 10 page research paper.
May 22, 2014 by Mario Garcia

career aw
Can someone plz get a website all about photography for me I really need it for a project that is due tomorrow that my teacher assigned but i need a little bit more about what their daily tasks are?!?!?!?!?!?!? I REALLY NEED HELP!!!!! PLZ SOMEONE!!! THANXS
September 25, 2007 by Stacy

i really, really, really need help
what coordinate point is the solution to the system? {3x+2y=8 {x-y=1 (2,1) please don't think i just made that up, it's correct. you have to use substitution, when you do solve for x and y, you get: x= y+1 and y=x-1, plug in y for 3x+2y=8 and you get: y=1, then plug in "1" ...
February 22, 2007 by andrea

Chemistry -I really need Help.
what is the mass of 4 moles of Li?
February 3, 2012 by crissy

Math
I need to express the following in equivalent form: m-2/m^2-5m+6 , 2x+6/x^2-6x-27 , a^2+a/a^2+2a+1 , 2w+1/2w^2+2w+1 , 8Z+6Z^2/9z^2-16 I really don't understand how I can do this if the denominator is smaller and I just don't see how I can simplify since I think that's what it'...
September 25, 2008 by Sally

Social Studies
Why did the first americans migrate to the amercias. Where did they come from and what were they following? I really dont need a huge history about this qs. I just need to write 2-3 sentences to answer this qs. Please help me I really dont get this. Thank You !! :)
November 3, 2011 by Laruen

Literature
I really really need help with this, PLEASE. I need to list the nouns, verbs, and adjectives that establish and shape the mood of the poeom El Olvido by Judith Ortiz Cofer. Please, just give me some examples Thanks -MC
December 22, 2009 by mysterychicken

Chemistry URGENT/DR BOB
I have a couple of unfinished experiments i need help with as well. If you can help me. Thanking you in advance. If I tested the ph of NaOH and its H+ was 12.2 how would I express this in a power of 10? I really have no clue. Need help.
April 23, 2014 by jazz

Chemistry- titration
OK I REALLY NEED HELP!!! and i AM DESEPRATE!! I have a titration courswork tomorow and i need to know the measurment,procedual and significant errors that are made in titration and how they can be improved. Also i need help with the evaluation bit. I REALLY NEED HELP I MANAGED...
December 5, 2006 by H

Chemistry
A student must make 500 mL of a 1.5 M HCl solution. The student has plenty of water and a stock solution of 6.0 M HCl to use. What volume of the 6.0 M HCl solution must be added to what volume of water to make the desired 500 mL of 1.5 M solution? I don't really know how to ...
March 8, 2009 by Katie

French
I am doing a presentation on the efficiency of appliances. I am going to be comparing the past and the present and then France and the US. Do you guys know of any good websites that would talk about any of this. All I can really find is different brands of appliances and then ...
April 4, 2012 by rebekah

french
I am doing a presentation on the efficiency of appliances. I am going to be comparing the past and the present and then France and the US. Do you guys know of any good websites that would talk about any of this. All I can really find is different brands of appliances and then...
April 5, 2012 by rebekah

check please
hi ms. sue i was wondering if you had email that i can have to email you if i need help because i need help with accounting with some type of graph but it wont fit here is there anyway you could help me through your email or i can send it to your email and you help me out ...
August 24, 2009 by henry

chemistry
what is suspension in chemistry? will you please give me a very long explanation about it now.....? I really need it for my project.plz?????? Write your own long explaination, and I will be happy to critique it.
October 9, 2006 by Lawrifel

English III
Okay so I am reading the book The Scarlet Letter and it is like really boring, so far. I am about a chapter in and my homework is really hard! I have to read a sentence the packet gives me and interpret the darn thing. It's driving me insane because these things are really ...
June 2, 2009 by Cris

CAN ANYONE HELP?
I posted my science (chemistry) question and I have received no help and i really need to get this done so can someone please help??
April 3, 2014 by Anonymous

PreCalculus REINY HELP PLEASE
well yay thanks for the answer but i really need the formula lol I tried to derive it on my own but it was a little bit rough lol i need the formula it wasn't in my book and I don't know what the name of the formula would be so i can't really google it...
April 28, 2010 by Kate

Science
Identify commonly used lab equipment. (beaker, graduated cylinder, triple beam balance, test tube, Patri dish) I really dont need answer. Does this means I have to write definations for each lab equipment???? I really need help.
November 6, 2011 by Laruen

Math - I really need help, please.
A town has a population of 8400 i 1990. Fifteen years later, it's population grew to 12500. Determine the average annual growth rate of this town's population. I really don't understand this problem. I've been going at it for hours and all I've come to is that the equation ...
November 2, 2008 by Lacey

Chemistry
A solid metal is often known as having 'an array of positive ions in a sea of electrons'. Write down the electronic structure of magnesium atom and use it to explain what this phrase means. Actually I don't know how to explain it. So I need you to explain it in your own words...
December 4, 2009 by Eman

Chemistry - Urgent
Determine the mass of 3.16 ×1023 atoms Cl. Answer in units of g. How do you do this? Need to get it done really fast. Thanks for help.
October 11, 2009 by Jacob

lighthouses
Hi my son has to do a lighthouse for a school project and it has to really light, I'm not really sure how to go about this project or what materials he will need. Can anyone offer any help Believe it or not here is a site on how to build a model lighthouse...simple ...
January 28, 2007 by Brenda

Algebra-I really need help, please?
I have to solve sqrt(2x-7) >=5 answers would be x>=16 x>=7/2 7/2<=x<=16 x<=16 I don't get this concept at all and I have 20 of these kinds of problems for homeowrk-can someone direct me how to start or give me an example or just help please? I really need to ...
January 8, 2011 by Sarah

Chemistry
The question says Sufuric acid reacts with Aluminum hydroxide by double replacement. I have the reactant side I just need the product side because I need to know does aluminium replace Hyrdrogen, really confused see Ms J question above
February 25, 2007 by Beautiful

chemistry project please help really need it
help me out in choosing a topic for my project it should be anyhow related to chemistry help me please
May 23, 2013 by aditi

Algerbra
i really need help! 6z=4(1/2z-8) I really dont know what to do
September 29, 2014 by Daphne

Chemistry
Need help with these--- 28. Alloys are a. elements b. compounds c. mixtures 38. Alpha rays are really a. electrons b. helium nuclei c. electromagnetic waves Thanks -MC
October 30, 2010 by mysterychicken

College Chemistry Really Need Help
THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)
December 7, 2010 by KEVIN

chemistry
The Kb for butylamine is 5.9x10^-4. What is the Ka for its corresponding conjugate acid, butylammonium? I really need help with this. I have no idea what to do. All I know is the equation to fine "Ka."
April 22, 2011 by Adam

Chemistry --really need help!
I am really struggling with these problems!! A reaction mixture that consisted of 0.20 mol N2 and 0.20 mol H2 was introduced into a 25.0 L reactor and heated. At equilibrium, 5.0% of the nitrogen gas has reacted. What is the value of the equilibrium constant Kc for the ...
February 19, 2010 by Angelica

Math 6th grade
Does any one know a really good websites for 6th grade math ? I'm behind in math and need to catch up or else I'll be really super dum . I need HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
December 2, 2008 by Emily

Chemistry 1
Does anyone know what websites are good to use for Chemical Reactions and balancing equation. I have a test tomorrow, and i need to really practice those. Thanks
May 13, 2008 by Stephanie

CHEMISTRY
1. The percent composition by mass for peroxyacylnitrate (PAN) is:19.8% C,2.5% N, and the rest is oxygen. Determine the empirical formula of this compound. ...plz i really need your help!!!
June 6, 2013 by irfan

Literature
i need help thinking of Criterion for my evaluative essay..i'm writing on a piece of literature..i need to write what criteria i'm going to use to evaluate the work.. i really need help with this..i need to come up with atleast 4 criterions and i'm stuck please give me some ...
February 16, 2009 by Bella

Science
Can anyone help me with some topics to write about on what chemistry has to do with mechanical engineering. Anyone's help would be appreciated because I really need to finish this 10 page research paper.
May 27, 2014 by Mario Garcia

Leiningen Versus the Ants” by Carl Stephenson.ASAP
Okay, so I really need help, I have read the story, but I realy need help. Has anyone read "Leiningen Versus the Ants” by Carl Stephenson. Before. I really need help so please help.
September 28, 2013 by rockrboiluvr14

DrBob222
I really need help on these chemistry problems. Can you please help me work them. Please?
April 5, 2010 by Help please

algebra-trig
Can someone please explain to me how to graph sine and cosine step by step because I am so confused and I really really need help.
April 12, 2012 by missy

algebra-trig
Can someone please explain to me how to graph sine and cosine step by step because I am so confused and I really really need help.
April 12, 2012 by missy

Calculus
Please help find the rational roots of f(x)=4x^4 - 3x^3 + 2x^2 +x - 3 another is f(x)=-3x^3 - 2x^2 + x - 1 I tried but still confuse please help really really need help Thank you very much!
September 2, 2012 by Heather

Math Homework
Hi! I really need help with these. I tried them on my own but I got really confused. Thanks! 1.) If f(x)=1/x and g(x)=1/x^2, find the domain of g/f 2.) If h(x)=4/(5x+2)^2, find the two functions f and g so that f(g(x))=h(x).
September 28, 2014 by Faith

English
I really need to get a WORKING charger for my phone. Participle or verb? I think it's a verb, but I'm really not sure.
October 29, 2012 by Gina

AlgebraII
I really stuck on binomial theorem and I have a whole worksheet due Monday How do I solve (x+5y)^4 I need to really understand this-please explain the steps so I can learn from it and then use it to do the other problems
April 9, 2011 by JoyceLynn

chemistry
can someone please give me the name of this coumpound, not what type it is. I really need this name thanks. CH3OCH2CH2CH3
February 24, 2009 by debra

Chemistry
If you need to make a solution of 1.0L at 2.5M citric acid and you only have 45mL of 5.0M citric acid, do you have enough for your experiment? If a mathematical procedure is involved, please explain to me; I really want to grasp this chemistry concept.
June 11, 2014 by Lie-ma Been

Chemistry
Please reply as soon as possible, I really need the answer urgently. How many grams of NaOH are required to completely neutralize 100ml of 1M solution of H2SO4?
September 28, 2010 by Lost In Studies

Chemistry
At what tempature will .0100 moles of argon gas have a volume of 275mL at 100 kPa? please this is due tommorrow really need som help
February 7, 2012 by Noble Hauck

Chemistry
Hi everyone, I really need help with this problem. What is the reactant, products, and what compounds is it? Is it H2O, O2, or what? What are the transition molecules? Help please. Do as below to get to the image. I couldn't put the URL in and it isn't my website. I just found...
June 17, 2012 by Anonymous

Chemistry
Dear DrBob222 !!! Would you please help me answers the question that I posted. I really don't understand and need help! Please, Thanks
February 19, 2010 by Ashley

Chemistry
Really hard Chemistry question that I need help with. Any assistance would be really helpful.? When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected ...
May 25, 2011 by Codec

Chemistry
What is the difference between Entropy, Enthalpy and Free Energy. I'm getting really confused and I just need someone to explain it in simple terms please. Thanks in advance.
June 8, 2010 by CHeem

reading...please help
i need to know who the antagonist is in the story money hungry and i need to know what the conflict in the ook is please help me....i really need help i gotta know this by tomorrow!
September 30, 2007 by amanda

Biology
Is there any biology websites for teens??? (NOT games! notes and quizzes to practice). The Science of Biology The Chemistry of Life Cell Structure and Function Photosynthesis & Respiration Something REALLY easy to understand(btw I'm going to the 9TH GRADE). please help (having...
July 17, 2013 by Laruen

biology
i really need some help!! i understand the parts of the heart and their names, but i am really confused on the cardiac cycle graph that shows the pressure of the heart at certains stages HELP ME PLEASE!
December 1, 2008 by sophie

Chemistry
1.A patient needs 2.10×10−2g of a sulfa drug. There are 8.00mg tablets in stock. How many tablets should be given? Really need help with this! :/ Thanks -MC
January 27, 2014 by mysterychicken

spanish
well this is not really a question i am not really good at spanish and i need help with writing an esay
December 11, 2011 by sherrickia

CHEMISTRY
Guys i really need help in these three problems. If someone could explain how to do this i would appreciate it! complete and balance the following equations 1. SO3^2- + Cu^2+ --> SO4^2- + Cu^+ 2. Cr +Cu^2+ ---> CrO4^2- + Cu^+ 3. MnO2 + Ag^+ ---> MnO4^- + Ag
February 14, 2012 by Keisha

Finance
I really really need some help on this one!!! All I need is for someone to point me in the right direction. I have filled in the blanks of the income statement and figured out what the net income is. I am very stuck. How do I get the depreciation expense based on this ...
September 7, 2014 by Karly

Math repost for Jordan
REALLY NEED HELP WITH MY HOMEWORK AND I WAS WANTING TO KNOW IF YOU GUYS HELP ME WITH IT SO PLEASE PLEASE PLEASE HELP ME WITH IT BECAUSE IT REALLY IS HARD YOU KNOW YEA OR NEA OR MAYBAY!
February 29, 2008 by Ms. Sue

PreCalculus (PLEASE HELP, IM BEGGING!)
Can anyone please explain these problems to me?? I really need help!I need to simplify these trig expressions but I don't understand how my teacher is doing it at all and I have a quiz on this tomorrow! I've really been trying but I just don't get it! 1)Mulitply: [cosx/(1-cosx...
May 5, 2012 by Valerie

Clinical chemistry
Does anyone help me how to solve percent sol.,molarity,molality and normality in step by step?? i have this exam tom. so i really need ur help ...thanks in advance
July 15, 2012 by Goldie

chemistry
The decomposition of an aldehyde solution in carbon tetrachloride is a first order reaction with a rate constant of 1.20 x 10-3 min-l. If we start with [aldehyde] = 0.0500 molar, what will the concentration be 150 minutes later? a. 0.00900 M b. 0.0418 M c. 0.00926 M d. 0....
February 17, 2012 by Dom

Chemistry
If 50.0 kJ of heat are added to a 20.0 gram ice cube at -5.00 degrees Celsius, what will be the resulting state and temperature of the water? I need some serious help with this! I think I'm making it much harder than it really has to be.
December 11, 2010 by Tichele

college chemistry
Guys i really need help in these three problems. If someone could explain how to do this i would appreciate it! complete and balance the following equations 1. SO3^2- + Cu^2+ --> SO4^2- + Cu^+ 2. Cr +Cu^2+ ---> CrO4^2- + Cu^+ 3. MnO2 + Ag^+ ---> MnO4^- + Ag
February 14, 2012 by Keisha

Chemistry
I am figuring out how many moles of CU2SO4 are in 485.6 grams. How would you set up the proportion for this? What would the answer then be. Thanks. I really need an example to jumpstart this worksheet.
April 6, 2009 by Meghan

chemistry
How much energy must be absorbed by 20.0g of water to increase its temp. from 283.0 C to 303.0 C? please i really need the answer step by step correctly thanks
September 27, 2010 by kacey

Chemistry
I am having a really hard time setting this problem up to solve can anyone help? Hexane has a density of 0.659 g/mL. How many (mL) would a student need to pour in order to get 49.5g of hexane?
September 11, 2013 by Lynn

Socials - Need Help
could someone please have a look at my post, I really need help.
February 10, 2011 by Sara

poetry
i need help on making a TROCHAIC poem for a project. i really need help
May 19, 2010 by maddie

Science
I REALLY REALLY NEED HELP SO 1.I need to do an essay asking you (me)to explain what is the difference between erosion,transport,and deposition?... 2.another essay asking me to explain you (me) to explain the destructive and positive effects of a volcanic erupyion?... 3.a short...
June 14, 2014 by Alia

math-moneyfractions
i have some math questions that i really ,really,need help with asap if any body can explain some of these questions that will be great help.Ok here are 3 of the questions i am about to type now ok the first one says,whole 16 nickels a.circle 3/a of the nickels b.how much ...
February 18, 2009 by chemaya

calculus
i really need some help, i really appreciate all yalls help. Consider the function F(x)=2x^2-5x+5/x-2 Domain Vertical,horizontal,or slant asymptotes x-intercept(s) y-itercept(s) symmetry(respect to x, y-axis or orgin) F’ (x) Critical numbers F” (x) Possible points of inflection
December 6, 2009 by marlyn

Math - help really needed
I'm sorry to double post; I don't want to seem impatient, but I really need help with this. Prove each idenity. 1+1/tan^2x=1/sin^2x 1/cosx-cosx=sinxtanx 1/sin^2x+1/cos^2x=1/sin^2xcos^2x 1/1-cos^2x+/1+cosx=2/sin^2x and (1-cos^2x)(1+1/tan^2x)= 1 I haven't even gotten 'round to ...
December 2, 2008 by Rani

chemistry
What is the spectra/spectrum (?) of the following gases? -helium -hydrogen neon -nitrogen I'm not understanding this chapter really well. I have to research this stuff online but I don't really understand what I'm supposed to be looking for.
November 9, 2009 by lola

madern tegnology
find out how modern tegnology has proved new means by wich people may save money. P.S i really don't understand and this is part of a project that is due tomorrow ANd i really need the answer before 9:30 tonight... thank u
March 30, 2009 by wow146

Creativeness
I need to make a brochure that promotes volunteering. I need a catchy title!!! I really have no good ideas. Thanks!
December 3, 2007 by Anonymous

english
i need help finding a titale for my essay. it is a personal narrative about my family.. the theme is laughter.. i really need help
June 3, 2010 by caroline

Algebra! I really need help!
r=radical sign r64s^4t^3 Simplify the expression up there. Show me an explanation, too! Please! I beg of you..I need help.
May 16, 2012 by Izzy

chemistry
What is the maximum number of Cs+ ions that can be produced per joule of energy absorbed by a sample of gaseous Cs atoms? Do you start by knowing the ionization energy for Cs. I really need assistance.
October 12, 2010 by Ysabella

sarah
hi i am doing a poster project on tim obrien's the things they carried. i need a good grade so i was wondering if they are any super unique ideas that would make this poster really really good
November 2, 2009 by english

english2
what is the best thesis statement for als or amyotrophic lateral sclerosis.. i really can't think of a god thesis statement for this thing..i really need some sense here..tnx
January 27, 2010 by kishel

Chemistry
I really don't know how to approach this problem and I really need help. Using the average molarity of your initial acetic acid solutions, the initial volumes, and the volume of NaOH added to reach the equivalence point, calculate the [C2H3O2-] concentration at the equivalence...
May 6, 2010 by Megan

algebra 2
A. I need to write an equation to the linear equation..(-2,-2), (3,3). B. I need to graph the function of y=|x| on a coordinate plane. C. I need to give one similarity and one differnce for the equations and graphs in parts A and B. I really need your help on this i dont ...
January 17, 2008 by logan

Anatomy and physiology
1)Why is enzymatic catalysis essential for life? Describe in detail the mechanism for enzyme mediated anabolic and catabolic reactions. What are the various modes of inhibition. 2) "every energy transfer increases the entropy of the system" .why? (hint- law of conservation of ...
January 21, 2013 by Heather

Functions
Find the sum of the 50 greatest negative integers. I'm supposed to find a, d, and t(at)n, but I'm not sure which is which. I think it makes sense for n to equal 50, but apart from that, I don't know what else to do. I would really appreciate some sort of explanation on how to ...
December 16, 2008 by Lana

history
I need some personal facts and his discovery about the explorer named Robert de La Salle. Please I really need help on this one!
November 25, 2007 by chris

algebra 2
i really need help on these..i dont understand ....i need to find the real number solutions of the equations... -2v^6=16 3s^4+15s^2-72=0 3c^7=81c^4 3q^4+3q^3=6q^2+6q any help would be appreciate...thank you!!
February 23, 2008 by logan

HELP ME NOW!!!
could you please answer my question? I need to go read my book. my mom is getting upset! i an sorry, i don't mean to be snobby but i really need help!
February 24, 2010 by Morgan

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