Thursday
October 2, 2014

Search: chem really need help!

Number of results: 40,699

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

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

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

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

Chem Help Pls!
How to sketch Maxwell distributions plots for the following? a) O2 and CO2 at the same temperature b) Ar at 270K and 1000K I really need help with this!
September 17, 2012 by Dia B

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

chem
After obtaining a greenish color in an experiment what does this tellyou about the relative concentrations of H^+ and OH^- in the solution? pls help i really need a simople explanations about this.
December 3, 2012 by akira 12

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

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

Help needed for Chem!
How can I balance the equation and place coefficients where they are needed for this question: Na + Cl2 -> NaCl please show all the correct steps for this answer because I really need help in understanding it.
March 15, 2008 by Lisa

CHEM Help!
My homework is about translating word equations and I need help in answering this question. Sodium phosphate reacts with calcium nitrate to produce sodium nitrate and calcium phosphate. What would be the answer? I also need help with this other question because it is kind of ...
March 11, 2008 by Anony

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

chem 1211
P2 +3H2=2ph3 How many grams of ph3 can be formed when 37.5 grams of p2 and 83 L of h2 gas are reacted at 1 atm and 273.25 K? I really need a step by step of this problem. Thanks in advance!
October 21, 2013 by Sara

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

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

chem
.If the pressure of the gas in a 2.31 L balloon is 0.120 atm and the volume increases to 7.14 L, what will be the final pressure of the air within the balloon? Round to the nearest hundredth. Don't forget the units. i really tried but i need help
May 23, 2013 by nene

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

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

Chem in relation to Beuatiful's question
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 hydroxides react with acids to form a salt and water. Products ...
February 25, 2007 by Ms. J

CHEM organic chem
i am really confused! i am doing the production of ethene from fractional distillation and i understand the whole concept of it what i don't get is how i can write a balanced eqn to show how ethene can be produced from C14H30 (tetradecane?!) i did C14H30 ------> C7H14 + ...
November 13, 2007 by AllyKat

CHEM organic chem
i am really confused! i am doing the production of ethene from fractional distillation and i understand the whole concept of it what i don't get is how i can write a balanced eqn to show how ethene can be produced from C14H30 (tetradecane?!) i did C14H30 ------> C7H14 + ...
November 13, 2007 by AllyKat

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

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

chem really need help!
If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the reaction?
January 17, 2013 by Caitlin

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

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

Ksp/Ka Questions-Chem
I really don't understand how to set this up. Any help is really appreciated! I really don't quite understand how to set up a caluculation to figure out whether a precipitate will form and i'm struggling with the second half too! When 25.75 mL of 0.00826 M lead II nitrate is ...
April 8, 2008 by Sigurd

Chem-Help Please!!!
a correction needs to be made to the calculations for real gases as compared to ideal gases. apply these corrections and calculate the real pressure expected for 5 mole of nitrogen in a 1.5L container at a temp. of 20C. Note: I tried to find right formula for this but couldnt...
April 18, 2012 by Amanda

chem
I really need these answers to balance the net ionic equation or make it into one. Cu(NO3)2 (aq) + NaOH (aq) = CuOH (s) + Na(NO3)2 (aq) Cu(NO3)2 (aq) + NaI (aq) = CuI (s) + Na(NO3)2 (aq) Cu(NO3)2 (aq) + Na3PO4 (aq) = CuPO4 (s) + Na3(NO3)2 (aq) Fe(NO3)3 (aq) + NaOH (aq) = FeOH...
February 18, 2012 by Suey

Chem PLEASE HELP
How do i use energy coupling to work out how many molecules of ATP dG =-55 kJ/mol needed to make a peptide bond dG = +25 kJ/mol i dont really understand how to go about this do i need atp to activate the amino acids how can i calculate this?? d being delta the triangle btw any...
November 4, 2009 by Amelia

chem- acids and bases
sorry to take up your time again, acids and bases just really confuse me, i'd really appreciate your help again. "What is the pH at the end point for the titration of 0.20M HNO2 by 0.20M NaOH? Ka nitrous acid= 4.5 x 10^-4." this is what i do know: - end point, so it's the salt...
April 16, 2011 by marie

Chem Midterm Review
Ok, so I've been really busy with midterms and my chemistry one is tomorrow. Now, I never intended to let so much time slip by before i started studying, but it happened. It's one of my most important exams. Do I still have a chance of passing? If so, how should I attempt to ...
January 16, 2008 by Matt

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

Chem
A 10.0% by mass H2SO4(aq) solution has a density of 1.07 g·cm-3. How many milliliters of solution contain 8.34 g of H2SO4? What mass (in grams) of H2SO4 is in 248 mL of solution? It's been a while since I have had a chem class...so sorry if this seems really easy I just don't ...
February 15, 2010 by Cairy

Chem Need Help
I really need help with this question? You have a 12.01 g sample of carbon. The average mass of a carbon atoms is 1.994 x 1023 g. How many carbon atoms are in the sample? (round the number to 2 decimal places) (if you get a superscript, place a ^ before the superscript) (if ...
February 5, 2008 by Lisa

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

chem
hey I am really stumped...I would really appreciate some help with this question 1.0560g of antacid is weighed and mixed with 75.00mL of excess 0.1126 M HCL. The excess acid required 4.68mL of 0.1008 M NaOH or back titration Calculate the neutalizing power of the antacid in ...
October 2, 2007 by Alexa

Chem
(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109? % (c) If the mass of Ag-107 is 106.905, what is the mass of Ag-109? amu I really need help. Can u say the answer then explain how you got it? Thanks:)
September 26, 2010 by Rebekah

Chem Help PLEASE!
Asked earlier but got no reply :/ hopefully I get one now cause I'm really stuck and can't completely my assignment cause of one question.. How many grams of dry NH4Cl need to be added to 1.90 L of a 0.200 M solution of ammonia, NH3, to prepare a buffer solution that has a pH ...
March 14, 2012 by Taylor

Gen Chem
For my chem class I have 3 elements and have to find what they are used for today or an interesting fact. I have looked but I can't really fin anything. My elements are: Cobalt,Thulium, and Roentgenium I found that cobalt is used in money (nickels, quarters, and dimes, but ...
October 21, 2012 by Andrea

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

Org. Chem SOS???
Sorry for re-posting this question but I feel as if it hasnt been read or something. Otherwise does no one really know the answer? I am really going crazy over it and I have only 1 try left. Please What is the lowest energy alternative resonance structure for this compound: ...
January 19, 2010 by Natasha

chem
what does the heating curve of ethanol look like? im really confused about this...
January 21, 2010 by samuel

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

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

Chem
Can someone explain in really simple terms the difference between Sigma and Pi bonds?
June 18, 2008 by Alex

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

chem.
I really don't understanf how jameschadwick discovered the neutron. iread websites and read the 18 pg. article but what was his experiment?
December 12, 2010 by tj

studying for chem 2
My professor really likes conceptual problems and that is what we will be tested on. How can I practice concept questions??
September 17, 2011 by Lauryn

chem
---------- A compound has the formula Mg3X2. If 1.87 g of X combines with 4.86 g of magnesium, what is the atomic weight of X? A) 7.0 B) 14.0 C) 21.0 D) 28.0 E) 32.0 ---------- I'm having a really rough time with this one. It seems the total weight is 6.73 g, and that 27.79% ...
September 13, 2007 by manny

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

chem
for the reation: B203 + 3Ca = 2B + 3 CaO how do i attempt to know which 1 is oxidized? I really do not understand chemistry its my weakest subject
November 6, 2007 by Madison

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

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

chem
Give the full set of quantum numbers for the electron lost when a Cs atom ionizes. a. n = 6; l = 1; ml = –1; ms = +½ b. n = 5; l = 0; ml = +1; ms = –½ c. n = 5; l = 0; ml = 0; ms = –½ d. n = 6; l = 0; ml = 0; ms = +½ I am really am not sure but I think its b
November 9, 2007 by Sam

Dr Bobb
where u from r u chem proff... where do u teach .. i like the way u answers u r really gud thnks for ur help bye may God bless u
January 16, 2009 by Inquiry

Chemisty
How many grams of Cl are in 38.0g of CF2Cl2? I really want to figure out how to do it. I can't seem to understand any of this Chem homework and it's getting me frustrated, please help!
September 26, 2014 by Luis

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

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

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

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

Ap Chem,
1) What kind of chemistry makes it possible for DNA of materials being tested to lodge at only one kind of probe molecule? 2) What is normally the connection between damage to a cell and teh p53 protein? 3) From the perspectives of the society as a whole, why are mutatuions of...
February 27, 2008 by Starr

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

CHEM 11
I am really stuck with this... what mass of oxygen is contained in 10.5 umol of chromium(III)nitrate hexahydrate? Can't understand how to convert the micro-moles especially!
February 22, 2011 by lo

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

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

english102
i need help writing a secondary argumentative research paper ,i need a really strong thesis.what about one for poverty and education
February 3, 2013 by pam

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

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

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