# Chemistry --really need help!

97,743 results

### 9th grade living enviroment

I Really need help i need 2 write in a paragraph a correalational study i really really need help.. PLEASE

### 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:)

### I really need help!

Hi, I really need instructions. Can someone please tell me how to make a coordinate plane and a rectangle on the plane in Microsoft Excel 2013 please? I really I need an answer soon because this is due today!!!! Please someone help fast! Thank You :/

### 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...

### 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 ...

### 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 don't really get this at all. Can someone explain?

### 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

### Grade 6 LA

I really need 3 action words for mp3? I need this right now so someone really help me!

### Grade 6 LA

I really need 3 action words for mp3? I need this right now so someone really help me!

### 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????

### 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

### Social Studies

Why did the first americans migrate to the amercias. Where did they come from and what were they following? I really don't need a huge history about this qs. I just need to write 2-3 sentences to answer this qs. Please help me I really don't get this. Thank You !! :)

### 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)

### 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.

### 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!

### 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

### 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" ...

### Chemistry -I really need Help.

what is the mass of 4 moles of Li?

### 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'...

### 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

### 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.

### Modernist Poetry

I want to write a modernist poem about struggles, future, stress. How everything I do in grade 12 will affect my future. The amount of pressure that is put onto me by my parents to get into university. I need a lot of help. I've always struggled with poems. I really need help...

### 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...

### 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 ...

### 6th Grade Math Help Please

Hi, I need help because I'm really stuck on this math word. Can someone please define what rational coordinates means what? I really need help fast because this project is due today! Thank You :)

### 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 ...

### 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 ...

### 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 ...

### 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.

### 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 ...

### Science

Identify commonly used lab equipment. (beaker, graduated cylinder, triple beam balance, test tube, Patri dish) I really don't need answer. Does this means I have to write definitions for each lab equipment???? I really need help.

### 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??

### 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...

### 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 ...

### Science Fair Project

Please help any tutors around, i really need help on what topic to choose, and my science fair is in February 16, 2015!!!!!! I just want to get a really good mark so i get an A in Science again this year in my report card. From a Student in need!!!Wimbika

### 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...

### 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.

### 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 ...

### 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 ...

### History

Hi ! Can someone give me some really really really good websites about the "Manhattan Project" (WWI/WWII).. you know.. I need ONE primary resource and ONE secondary resource. I know you guys are really good at giving good websites. I cannot use wiki, or anything bogous and ...

### 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

### 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

### Chemistry Need Help

How many grams of baking soda, NaHCO3, are needed to react with 125 mL of stomach acid having an HCl concentration of 0.05984 M? The reaction is NaHCO3(aq) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(l). Do I need to chenage mL to L first? I'm really stuck with this question. I ...

### 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

### 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)

### 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."

### 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 ...

### 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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

### 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

### 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!!!

### 7th Grade Math Help

Hi, I really need some help with this. What is one example of how prime factorization is used in real life? I really don't know and I know what example you can use for factoring in real life but not this one. Please help as fast as possible! I really appreciate it! :)

### Chemistry

Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or iodide) ions? Please help ...

### 6th Grade Science

Hi, I really need help and I'm really confused I don't know what they are asking me to do. Provide three statements that demonstrate the importance of units when describing motion. Please someone help me because it is very important. Thank You :/

### 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 ...

### Chemistry

When iron metal reacts with oxygen, the reaction can form Fe2o3 (numbers are subscripts). Write a balanced chemical equation for this reaction and find the number of moles of oxygen that are needed to form 6 mol of Fe2o3. Show your work. I am really stuck and I don't know how ...

### English (I really need help!)

I need one more haiku for my assignment(I have already created 4, I need 5) My brain has run out of ideas! It should be about "A Lost Love"

### 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.

### 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.

### DrBob222

I really need help on these chemistry problems. Can you please help me work them. 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.

### 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.

### 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!

### 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).

### 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.

### chemistry

can someone please give me the name of this coumpound, not what type it is. I really need this name thanks. CH3OCH2CH2CH3

### 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.

### 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

### Help on social studies!

Hi! I was wondering if anyone could give me any websites to research on how forest, a resource, is collected and gathered. I try to look at some things, but nothing really captures what I need to type. Thank you! :) And, I really appreciate it!

### Algerbra

i really need help! 6z=4(1/2z-8) I really don't know what to do

### 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...

### English

Hi, I really need help on two questions for the novel called 'In the heat of the night! Here's the questions btw its chapter three In the chapter 1 and 2, the racial issue has been hinted. Now we sees clear indication that this issue will be a major item in the story. ...

### 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?

### 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

### Chemistry

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

### Chemistry

Hello! I really need help with this. Name the following salts according to the old -ic, -ous system and the stock system. a. CrS b. Cr2O3 c. CrI3 X 6H20 d. CuCl e. CuI2 f. CuBr2 x 4H20 g. HgCl2 h. Hg2Cl2 i. Fe (OH)3 I am totally lost. I don't know how to name these. I have so ...

### Art help me please i need it soon

haystacks in brittany by paul gauguin the artis most obviously showed experimentation through his use of perspective texture *** color line Achille de gas in the uniform of a cadet how was portion used in this image to create a mood of tranquility to create an optical illusion...

### Chemistry- PLEASE HELP

Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or iodide) ions? Please help ...

### 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 ...

### 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!

### 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.

### Chemistry

What is the molar concentration of K4Fe(CN)6 solution if 40 ml were used to titrate 150 mg of Zn ( that are dissolved ) forming K2Zn3[Fe(CN)6]2 ? I really need help for this excersice , I don't know what to do... Note: In my book the answer is 0,0382 M

### 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

### 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!

### Science

Without this system in the body, you would get really sick because toxins and waste would build up? (A) Cardiovascular (B) Excretory (C) Integumentary (D) Muscular I think its A, I really need this answered.

### spanish

well this is not really a question i am not really good at spanish and i need help with writing an esay

### math

i really need help im really confused on what to do to find the percentage write 3 3/5 as a percentage

### 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...

### 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 ...

### chemistry

how many grams of the solid can be formed from 206g of calcium nitrate and 140 g of phosphoric acid? answer in grams. I really need help and fast.

### 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

### Gifted and Talented Language Arts

I need to know what concrete poems are. Whenever I look up "what are concrete poems" all that comes up are concrete-making businesses. I really need help because every question I get right counts and I am so close to having an average of 100% on this test and I really want to ...

### Language Arts

Identify the independent clause in the following sentences 1. If we are going to make it to the movie on time, we really need to leave right now. A. If we are going to make it B. If we are going to make it to the movie on time C. We really need to D. We really need to leave ...

### 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 ...

### 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...

### Algebra

I need some help with this question I really don't understand it and some help going through this problem would be really appreciated :) Use the fact that a/b/c/d=a/b / c/d to simplify each rational expression. State any restrictions on the variables. x^2-1/x^2-9 / x^2+3x-4/x^...

### 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!

### 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

### 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....

### 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.