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April 18, 2014

Search: reactions!

Number of results: 2,274

Chemistry
3. Which oxidation-reduction reactions are best balanced by the half-reaction method? A.) covalent reactions *B.)acid-base reactions C.) ionic reactions D.) intermolecular reactions Thank you.
Saturday, March 23, 2013 at 9:50am by Anonymous

Chemistry
3. Which oxidation-reduction reactions are best balanced by the half-reaction method? (1 point) (0 pts) covalent reactions (0 pts) acid-base reactions (1 pt) ionic reactions (0 pts) intermolecular reactions Clearly it is NOT acid-base reactions!
Saturday, March 23, 2013 at 9:50am by cupcake

biochemistry
The phenomenon of coupling always involves ? oxidation and reduction reactions decarboxylation reactions reactions that produce energy and related reactions that require energy esterification and oxidation reactions None of the above
Monday, January 29, 2007 at 5:08pm by shawn

chemestry
I don't see anything terribly wrong with this statement but I probably would mark it false because the equivalence point occurs in other types of reactions in addition to neutralization reactions. We have equivalence points for pptn reactions, complexometric reactions, etc.
Thursday, April 7, 2011 at 12:12pm by DrBob222

chemestry please check my anwer.
1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions? Answer Acid-base reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.<<< Acid-base reactions and redox reactions involve different ...
Wednesday, April 3, 2013 at 8:01pm by asap

biology
What are endergonic reactions? How can endergonic reactions proceed in organisms? An endergonic reaction is a chemical reaction where the reactants have a lower free energy than the products. Enderonic reactions are coupled to exergonic reactions which cause the release in ...
Monday, February 11, 2008 at 12:24am by Emily

Changes in Matter
Which of the following are examples of a chemical change? a)corrosion reactions b)combustion reactions c)dissolving of sugar d)evaporation of water e)decaying reactions f)digestion of food Answer: a, b, c, e, and f Please correct me if I'm wrong, thanks
Monday, March 22, 2010 at 7:32pm by Sara

science
2. How do enzymes impact biochemical reactions in the body? A. Enzymes are catalysts to biochemical reactions. B. Enzymes lower the activation energy of biochemical reactions. C. Enzymes can speed up biochemical reactions. D. All of the above are correct.
Wednesday, November 6, 2013 at 3:53pm by hannah

Chemistry
Balancing Complete Redxo Reactions. I am not sure how I am suppose to start anything. Even the Half Reactions. BrO3^1- + Br^1- + H^1+ --> Br2 + H20. I need to know all the steps on how to do half reactions & I think I should be good.
Saturday, November 23, 2013 at 11:53am by Cloud

Chemistry
In stoichiometry, chemists are mainly concerned with a. types of bonds found in compounds b. energy changes occuring in chemical reactions c. mass relationships in chemical reactions d. speed with which chemical reactions occur i thought c?
Wednesday, March 10, 2010 at 10:00pm by Ana

chemistry
To a small extent. All reactions are reversible even though it may be very small. This one is very small. Yes, an equilibrium reaction will form. All reactions are equilibrium reactions. Some of these answers probably are not what your prof is looking for but they are right. ...
Monday, April 23, 2012 at 12:33am by DrBob222

chemistry
Mass is lost or gains in a.) all chemical reactions b.) all nuclear fission reactions c.) all nuclear fusion reactions d.) all chemical and nuclear reactions my guess is B
Sunday, May 20, 2012 at 1:29am by ben

chemistry
2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72 + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O7^2 *B.) Cr2O72 -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are best balanced by the half-reaction ...
Friday, March 22, 2013 at 11:18am by jack

Chemistry
2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72 + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O7^2 *B.) Cr2O72 -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are best balanced by the half-reaction ...
Friday, March 22, 2013 at 12:08pm by jack

chemistry
Using the half-reaction method, balance the redox reaction below. Show your work; partial credit will be given. I- + Br2 → IO3- + Br- Write the reduction and oxidation half-reactions. Balance them for atoms. Balance each of the half-reactions for charge. Multiply the ...
Friday, April 27, 2012 at 10:23am by Anonymous

Organic chemistry
Most reactions don't go to completion; therefore, starting materials may be present in the sample. Other reagents used may be present in addition to the initial reactants. Side reactions may take place; therefore, competing reactions may produce other products.
Sunday, April 4, 2010 at 12:39am by DrBob222

Chemistry
When chemists compare the rates of reactions carried out under different conditions, they often compare the rates near the beginning of the reactions. What advantage(s) do you see in this practice? Hint: Think of slow reactions. I know the rate of reaction is fastest in the ...
Thursday, March 15, 2012 at 2:41pm by Alana

Chemistry: check answers
Please check. Thank you. 2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72 + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O72 B.) Cr2O72 -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are best balanced ...
Friday, March 22, 2013 at 6:12pm by Jack

Chemistry -Please Help
2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O7^2 + NH4^+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O7^2 B.) Cr2O7^2 -> Cr2O3 C.) NH4^+ -> N2 D.) N2 -> NH4^+ I think it is B...? 3. Which oxidation-reduction reactions are best balanced ...
Friday, March 22, 2013 at 1:39pm by cassie

chemistry
why do organic reactions occur more slowly than inorganic reactions (those that contain ionic bonds)? In inorganic reactions the ions merely need to get close enough to attract between + and - charges. Organic compounds are not ionic (some are polar); therefore, the atoms are ...
Wednesday, January 10, 2007 at 8:33pm by joe

Physics
In what way are fission and fusion reactions similar? What are the main differences in these reactions?
Friday, April 25, 2008 at 8:12pm by Lee

Science
Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are there any experiments ...
Monday, January 7, 2008 at 8:52pm by Eddie

Organic Chemistry
Draw and describe the three overall redox reactions than occur in the conversion of 2,6-dimethylnitrobenzene to 2,6-dimethylaniline using stannous chloride. (Not the mechanisms). What are the key structures in these reactions, and what are their oxidation states? What are the ...
Monday, July 25, 2011 at 11:44pm by Tony

SCIENCE-Urgent
Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are there any experiments ...
Monday, January 7, 2008 at 9:47pm by Eddie

science, biology
What about combustion reactions makes them different from either synthesis or decomposition reactions?
Sunday, March 1, 2009 at 11:50am by me

Chemistry
Technically, all reactions are equilibrium reactions.
Wednesday, May 25, 2011 at 11:18pm by DrBob222

Chemistry
I'm confused with this question as I don't understand how to write the reactions. Here is the question if you could please help me with this question or just even give me an example on how to do it. I would really appreciate it. Thank you. Write the oxidation and reduction ...
Monday, July 20, 2009 at 3:01pm by Cori

Quick science question #2
Why are the reactions in the 1st and 2nd stages of photosynthesis called "light reactions."
Saturday, April 25, 2009 at 5:55pm by Stacie

General chemistry
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals?
Tuesday, January 3, 2012 at 8:28pm by Norma

general chemistry
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals?
Saturday, June 25, 2011 at 9:44pm by Penny

general chemistry
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals?
Wednesday, January 4, 2012 at 7:13pm by Norma

Chemistry, electrochem
(1) Half-reactions are written as ______ reactions with charge and mass balanced. (2) Among the ions, Cd^2+, Pb^2+ & Ca^2+, ________ has the greatest ability to reduce to its neutral metal. (3) Among the neutral metals; Pb, Ca & Cd, ________ has the least ability to oxidize to...
Sunday, May 11, 2008 at 6:08pm by Terry

chemistry
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals?
Saturday, June 25, 2011 at 9:44pm by mema

CHEMISTRY
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals?
Thursday, July 21, 2011 at 10:06am by anne

chemistry
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals
Saturday, September 22, 2012 at 5:51pm by sonwia

History
The first thing you need to do is list your reactions to the article. If you post three of your reactions, I'll be glad to help you from there.
Thursday, February 20, 2014 at 8:55pm by Ms. Sue

Chemistry
I need to balance this equation by redox reactions with half reactions method NH4ClO4 + Al --> Al2O3 + AlCl3 + NO
Sunday, October 23, 2011 at 8:36pm by Krystal

SCIENCE-URGENT
Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are there any experiments ...
Tuesday, January 8, 2008 at 6:36pm by Eddie

chemistry
for the redox k lab there are also two questions.. drbob222 do you think you could help Question: 1. Of the reactions that occurred spontaneously in the individual tables, what types of qualitative changes would you observe that would indicate the reaction is proceeding? 2. ...
Monday, April 14, 2008 at 11:17pm by unknown

Chemistry
K^+ is a spectator ion and that is why is isn't in the equation. The part of answer B I don't like is "and redox reactions are written as net ionic reactions." That implies that redox reactions are never written as molecular equation and that isn't true. Therefore, ...
Sunday, April 25, 2010 at 4:22pm by DrBob222

Chemistry
The reactions are written as reductions reactions. For questions 2 and 3, look up the reductin potentials in your text. The ions with the largest negative potential are the hardest to reduce.
Monday, April 21, 2008 at 2:35am by DrBob222

chemistry
In some cases, none. Generally, however, acid/base reactions are H^+ + OH^- ==> H2O while redox reactions lose and gain electrons.
Tuesday, September 15, 2009 at 9:00pm by DrBob222

Chemistry
In certain first order reactions the concentration of the reactant decreases from 0.15 M to 0.11 M in 36 minutes . calculate the time of half reactions
Thursday, November 21, 2013 at 10:51am by Shubham Shah

Science
Most reactions in the body occur too slowly on their own to sustain life. This is because: a. all reactions in the body are endergonic. b. many reactions require large inputs of activation energy. c. no catalysts are present in body cells. d. most biological catalysts are not ...
Monday, February 26, 2007 at 8:11pm by Dave

chemestry please check my anwers.
1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions? Answer Acid-base reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.<<< Acid-base reactions and redox reactions involve different ...
Wednesday, April 3, 2013 at 5:27pm by asap

Chemistry
To be honest about it I don't know. Usually the heading under "six types of reactions" has combustion, synthesis, decomposition, single and double replacement, and acid-base reactions. I have seen headings of "five types of reactions" which includes all those above except acid...
Tuesday, December 18, 2012 at 10:50pm by DrBob222

chemistry
ONe more question DrBob :) For the reactions that occurred spontaneously in the individual tables, balance these reactions assuming they are in an acidic solution. Thanks for any further assistance we appreciate it
Monday, April 14, 2008 at 10:01pm by Joseph

chemistry
Products of alkynes with what? Alkynes will undergo addition reactions so will give similar products to alkenes where the reagent has added twice across the triple bond. Alkynes will under go Diels Alder reactions with a diene to give a cyclohexadiene. Alkynes also under go ...
Friday, November 25, 2011 at 12:56am by Dr Russ

chem
The endothermic reactions have negative ∆H values, because, for thosue reactions, chemical energy is lost when heats of formation of reactants and products are compared at the same temperature.
Thursday, March 13, 2008 at 4:56pm by drwls

Gen Chem
Fusion reactions are affected by temperature. High temperatures are the only way to make fusion reactions go. Fission reactions are not as temperature dependent, especially those that depend only upon the decay of a nucleus, but total fission reaction may be somewhat dependent...
Friday, March 28, 2008 at 10:42pm by DrBob222

Chemistry
Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous. (Use the below reactions AS WRITTEN, DO NOT REARRANGE ANY REACTIONS.) You must show the two half-reactions ...
Saturday, April 16, 2011 at 2:44pm by Anna

Chemistry- Please help!!
Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous. (Use the below reactions AS WRITTEN, DO NOT REARRANGE ANY REACTIONS.) You must show the two half-reactions ...
Saturday, April 16, 2011 at 5:05pm by Anna

Chemistry
What are the half reactions for NH4ClO4 + Al = Al2O3 + AlCl3 + NO? I can balance it once i have the half reactions
Sunday, October 23, 2011 at 9:56pm by Sam

Chemistry
What are the half reactions for NH4ClO4 + Al = Al2O3 + AlCl3 + NO? I can balance it once i have the half reactions
Sunday, October 23, 2011 at 9:58pm by Sam

Chemistry
Yes, so in other terms, you are saying that exothermic reactions usually generate more, but endothermic reactions store more?
Friday, May 31, 2013 at 6:50pm by K

chem
List the experimental conditions that favor Sn1 reactions, and those that favor Sn2 reactions.
Monday, November 24, 2008 at 11:58am by Jason

Chemistry
which of the following are redox reactions a. 2Na+2H2O-->2Naoh+H2 b. MgBr2+2NaF-->MgF2+2NaBr c. 2CO+O2--> 2CO2 d. SO2+H2O--> H2SO3 For those reactions that are redox reactions: Indicate which atoms get oxidized and which atoms get reduced. Indicate which reactant ...
Monday, November 21, 2011 at 1:49pm by Kali

Chemistry
Nuclear reactions occur as the result of changes in the nucleus of an atom; chemical reactions occur with electrons in the outside shells of atoms.
Monday, August 6, 2012 at 8:02pm by DrBob222

Organic Chem
You might take a look at the reactions listed here. For example, hydrogenation with a catalyst looks good to me. The other reactions (adding a CH3 group etc) probably would work too.
Friday, January 28, 2011 at 11:36am by DrBob222

CHEMISTRY
What type of reactant typify compostion reactions? You need to clarify your question for me. I haven't heard of composition rreactions. Perhaps I know it by another name. In the real world, there is no "typical" reactant in composition reactions. In the construct world of ...
Saturday, December 16, 2006 at 6:02pm by PLEASE HELP

Chemistry- Please help!!
Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous. (Use the below reactions AS WRITTEN, DO NOT REARRANGE ANY REACTIONS.) You must show the two half-reactions and ...
Saturday, April 16, 2011 at 5:05pm by Anna

AP Biology
I'm working on a lab to show that light reactions must occur prior to dark reactions in photosynthesis. so far, i thought of the experiment involving two plants, one exposed to sunlight, the other is kept in a box. both receive the same amount of water soil, etc and both are ...
Friday, January 4, 2008 at 5:02pm by Carly

Balance each of the following redox reactions occu
Both half reactions look balanced to me; the second one is twice what is necessary. Notice you can reduce each coefficient by 1/2 to make them 8,1,1,4. Looks like you did a good job to me.
Wednesday, August 5, 2009 at 8:58pm by DrBob222

Chemistry
The easiest answer is that "that's the nature of the beast." The bottom line is that when reactions take place, we usually go from a higher energy state to a lower energy state. Subtracting as we do gives the correct sign for our "defined" delta H (negative for exothermic ...
Monday, April 5, 2010 at 11:09pm by DrBob222

ENGLISH, HELP?
In the following sentence, which words should be in quotation marks? Did you read the chapter Chemical Reactions in our science textbook, Understanding Chemistry? A. chapter Chemical Reactions B. Chemical Reactions C. Understanding Chemistry I think the answer is B, as it is a...
Friday, February 1, 2013 at 5:09pm by JJ

science
Conservation of mass merely states that the total mass is conserved (stays the same) in any physical or chemical process. It is not true in nuclear reactions. Mass can be converted to energy and vice versa. Actually, although your science teacher my not be aware of it, mass is...
Friday, February 26, 2010 at 6:32pm by drwls

Chemistry
How many electrons are transferred when C3H7OH burns in oxygen to form carbon dioxide and water? I have no idea where to start. Do I need to do half reactions? Can I even do half reactions for this?
Thursday, October 8, 2009 at 10:50am by Suzie

chemistryhelp
Generally, no. a. it is too corrosive(although it was the electrolyte used in one of the first cells by Volta.) b. it will not go through the reactions you want In a dry cell the MnO2 functions as one of the reactions.
Friday, February 24, 2012 at 5:36pm by DrBob222

Chemistry
Which statement about Kc is wrong? A. Kc is always a constant B. For some reactions, Kc increases with temperature increase C. For some reactions, Kc decreases with temperature decrease D. For some reactions, Kc changes when pressure is changed A is incorrect. Kc stays ...
Wednesday, January 31, 2007 at 12:40pm by Joe

biology
Which of the following is true about the relationship between energy and chemical reactions? Activation energy is required for a chemical reaction to occur. Activitation energy is not necessary in a chemical reaction which releases energy. Chemical bonds are always broken by ...
Thursday, April 15, 2010 at 11:40am by ballamoney1

Biology
O2 is a product of: A. light-dependent reactions. B. light-independent reactions. C. light-capturing events. D. All of the choices are correct. Is the answer D?
Monday, January 20, 2014 at 8:22pm by Anonymous

Chemistry
Draw the structural formulas of the expected products in the two following hydrolysis reactions. Breakdown of a Lipid reactions are glycerol and 3 fatty acids Draw the structural of the expected products in the two following hydrolysis reactions.
Thursday, February 9, 2012 at 7:02pm by Zack

science
One cannot generalize, except that it depends on the poison, and the dose. Rattlesnake venom, lead, mustard gas, and poision ivy all evoke different reactions, and those reactions depend on the dose.
Friday, January 29, 2010 at 9:49pm by bobpursley

Chemistry
Bob is wrong, by half reactions the hydrogen will balance out with the addition of H2O on the right hand side... i'm doing this problem myself and having trouble separating into half reactions in the first place
Sunday, October 23, 2011 at 8:36pm by Sam

Chemistry - Solubility
1.a) What did you observe upon the addition of NH3 (aq) to the magnesium chloride solution? Explain using relevant chemical reactions. I observed a colorless liquid. (Not sure how to explain) b) What happens when NH4Cl was added? Explain observation with respect to the ...
Saturday, March 29, 2014 at 8:40pm by HelpThankYou

biology
What are coupled reactions? Describe the interactions between enzyme, substrate, active site and the induced fit model Explain how changes in temperature, and pH affect the function of enzymes Recognize the structure of ATP, and be able to identify some key functions of ATP. ...
Sunday, July 10, 2011 at 9:47pm by noob

biology
Suppose you plant a seed and observe that a tree of large mass grows from it. The tree achieves a final mass that changes very little for years afterward. Which of the following is true about the tree? (1 point) Both anabolic and catabolic reactions took place in the seed and ...
Friday, August 24, 2012 at 2:38pm by Nunyaa

Chemistry+balancing equation tips
Today, we balanced combustion reactions and I got numbers up to 62! Big numbers are intimidating to me :P. is it always going to be like that for combustion reactions?
Thursday, February 19, 2009 at 5:48pm by Chopsticks

Chemistry-Plz see this DrBob
I am sorry I do not know what happens the symbolism, so I just deleted the symbols. Is it works for you that deleted the symbols? Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous ...
Saturday, April 16, 2011 at 6:33pm by Anna

Science
having wayyy tooo much trouble with this simple assignment. Is there a lab that proves that the light reactions must occur prior to the dark reactions in photosynthesis? So far, I thought of the experiment in which one plant is placed in direct sunlight and the other is ...
Thursday, January 3, 2008 at 4:28pm by Carmen

Science
How do you define energy efficiency? Both convert mass to energy, according to the formula E = m c^2, where m is the mass loss. Fusion reactions that involve the lightest elements are more energetic than fission reactions.
Wednesday, August 13, 2008 at 2:01am by drwls

Chemistry
It depends on the reaction or change you want to describe. In many reactions, if reactants collide with sufficient incoming energy, they form a new compound, with a relase of energy (it, the new particle is vibrating, rotating, or translating). The reverse reaction if somehow ...
Sunday, March 23, 2014 at 7:02pm by bobpursley

Biology III
I'm having wayyy tooo much trouble with this simple assignment. Is there a lab that proves that the light reactions must occur prior to the dark reactions in photosynthesis? So far, I thought of the experiment in which one plant is placed in direct sunlight and the other is ...
Wednesday, January 2, 2008 at 8:21pm by Carmen

Science
When a reaction occurs it is exothermic if heat is released and endothermic if heat is absorbed. What that means is that in exothermic reactions the reaction flask gets hot. For example, if you pour gasoline into a container and light it it burns giving off a flame and heat. ...
Monday, February 24, 2014 at 11:54pm by DrBob222

chemistry
Excluding redox reactions, One WILL occur if: 1. a ppt forms. 2. a gas forms. 3. a slightly ionized substance forms. Redox reactions follow other guidelines.
Monday, February 25, 2008 at 11:39pm by DrBob222

Chemistry 2
I might add that the excess heat (but light also may be involved) is absorbed by the surroundings in exothermic reactions. Next, you need to talk about endothermic reactions and how the heat needed to make the reaction go is supplied by the surroundings.
Monday, March 31, 2014 at 3:44pm by DrBob222

Ap Chem
It might help to explain your predicament if you post a complete problem. As is we are dealing with nebulous essentials. First, however, remember that Kc applies to ALL reactions while Kp applies to gaseous reactions (in Kp expression) only.
Sunday, October 9, 2011 at 10:47am by DrBob222

chemistry
Predict whether reactions should occur between aqueous solutions of the following compounds. If so, write balanced molecular and net ionic equations for the reactions. Include physical states. a. (NH4)2CO3 and CrCl3 b. Ba(OH)2 and HCl c. FeCl3 and NaOH d. Ca(HCO3)2 and HNO3
Sunday, July 3, 2011 at 1:33pm by ABCD

chemistry kinetics
1. Statement-I : Fractional order reactions are not elementary reactions. Statement-II : For an elementary reaction, order must be same as molecularity. are these statements true? give reason.
Thursday, May 24, 2012 at 1:06am by swa

Written Communication
What kinds of unwanted reactions might you get from readers of your messages? What steps would you take to ensure that the purpose of your message (whether informative, negative, or persuasive) is conveyed to your readers? As asked and answered previously: http://www.jiskha....
Monday, July 30, 2007 at 12:09pm by Shelley

AP Chemistry
What are the two half-reactions for the basic oxidized-reduction reaction Fe(OH)2+ H2O2 --> Fe(OH)3? If I can find out the two half-reactions, I'll be able to balance the equation myself. Thanks!
Saturday, September 11, 2010 at 2:12pm by Sara

Chemistry
I need help finding reactions beneficial to society. Here's the assignment quoted. "Your assignment is to research two different chemical reactions that are used to address social/environmental needs or problems. These reactions must clearly be attempting to improve our world...
Saturday, April 10, 2010 at 12:58pm by Crazy

Chemistry
I need help finding reactions beneficial to society. Here's the assignment quoted. "Your assignment is to research two different chemical reactions that are used to address social/environmental needs or problems. These reactions must clearly be attempting to improve our world...
Saturday, April 10, 2010 at 12:59pm by Crazy

General Chemistry
Balance the following redox reaction in acidic and basic solutions: Fe(OH)2(s) + O2(g) --> Fe(OH)3(s) These are the steps my instructor gave us to balance redox reactions: 1. Divide into 1/2 rxns (reduction & oxidation) 2. Balance atoms other than H & O 3. Balance O with ...
Wednesday, April 3, 2013 at 3:53pm by Emily

chemistry
Construct the following using molecules of your choice: a) a polyester and b) a polyamide. Each drawing should have four monomers and should be original in its structure. Your polymers can not be biochemical (carbohydrate, lipid, protein, etc.). Identify the reactions as ...
Friday, May 9, 2008 at 8:12pm by Mable

Chemistry
Explain why each of the following is incorrect: (a) Entropy increases in all spontaneous reactions. Wouldn't (a) be actually correct? Because when there's a spontaneous reaction, you have less stable molecules and more disorder. It will be lower in some reactions than in ...
Wednesday, May 23, 2012 at 2:58pm by Robert

PLEASE HELP CHEM!
2 HgCl2 (aq) + SnCl2 (aq) --> SnCl4 (aq) + Hg2Cl2 (s) Hg2Cl2 (aq) + SnCl2 (aq) --> 2Hg (s) + SnCl4 (aq) For each reaction, write the two half-reactions that make it up and calculate the overall reaction potential by adding the two half-reactions. Each overall potential ...
Sunday, April 8, 2012 at 3:49pm by Betsy

Chemistry
Using standard reduction potentials, show that one can prepare an ammine complex from CoCl2 and hydrogen peroxide in the presence of ammoinia but not in its absence. (need to write two redux reactions, calculate standard potentials for the reactions, and make conclusions). I ...
Thursday, April 26, 2012 at 12:26am by Anonymous

Science
Exergonic reactions are spontaneous. Endergonic reactions are non-spontaneous. If a reaction is exergonic its reverse reaction is endogonic.
Monday, July 27, 2009 at 5:52pm by DrBob222

CHEMISTRY
REWRITE the three reactions and their ∆H's (a) Reverse the 1st reaction and change the algebraic sign of its ∆H (b) Leave the 2nd reaction and its ∆H unchanged. (c) Double the 3rd reaction (multiply all its coefficients by 2). Double its ∆H, also. (d) ...
Monday, September 22, 2008 at 8:13pm by GK

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