Saturday
October 25, 2014

Search: reactions!

Number of results: 1,648

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.
March 23, 2013 by Anonymous

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
January 29, 2007 by shawn

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 ...
April 3, 2013 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 ...
February 11, 2008 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
March 22, 2010 by Sara

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 ...
March 22, 2013 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 ...
March 22, 2013 by jack

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.
November 6, 2013 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.
November 23, 2013 by Cloud

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 ...
March 22, 2013 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 ...
March 22, 2013 by cassie

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?
March 10, 2010 by Ana

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 ...
April 16, 2011 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 ...
April 16, 2011 by Anna

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...
May 11, 2008 by Terry

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
May 20, 2012 by ben

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 ...
April 27, 2012 by Anonymous

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 ...
March 15, 2012 by Alana

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 ...
January 10, 2007 by joe

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 ...
July 25, 2011 by Tony

Chemistry
Which of the following explains why there are so many differences in the properties of peptides and proteins? A) several amino acid sequences are possible for proteins and peptides B) some proteins are enzymes while others are not C) proteins and peptides include nitrogen D) ...
May 29, 2014 by Jake

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 ...
January 7, 2008 by Eddie

Physics
In what way are fission and fusion reactions similar? What are the main differences in these reactions?
April 25, 2008 by Lee

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 ...
January 7, 2008 by Eddie

science, biology
What about combustion reactions makes them different from either synthesis or decomposition reactions?
March 1, 2009 by me

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

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 ...
April 16, 2011 by Anna

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 ...
July 20, 2009 by Cori

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

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 ...
April 3, 2013 by asap

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 ...
November 21, 2011 by Kali

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?
January 3, 2012 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?
January 4, 2012 by Norma

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
November 21, 2013 by Shubham Shah

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?
June 25, 2011 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?
July 21, 2011 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
September 22, 2012 by sonwia

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 ...
January 8, 2008 by Eddie

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 ...
December 16, 2006 by PLEASE HELP

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. ...
April 14, 2008 by unknown

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 ...
February 26, 2007 by Dave

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 ...
January 31, 2007 by Joe

chemistry
balance the charge in the two half reactions by multiplying the half reactions by the correct multiplication factors
May 22, 2014 by deja

Chemistry 105
Which of the following reactions are redox reactions? 1. Al(s)+3Ag^+(aq)-->Al^3+(aq)+3Ag(s) 2. SO3(g)+H2O(l)-->H2SO4(aq) 3. Ba(s)+Cl2(g)-->BaCl2(s) 4. Mg(s)+Br2(l)-->MgBr2(s)
October 10, 2011 by julie

chem
List the experimental conditions that favor Sn1 reactions, and those that favor Sn2 reactions.
November 24, 2008 by Jason

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

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

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 ...
January 4, 2008 by Carly

Gen Chem
The signs of DG, DH, and DS at 25C are shown in the table below for three reactions. Reaction DG DH DS I - + + II - - + III - - - Which reaction or reactions should go in the REVERSE direction at high temperature?
March 28, 2008 by Sarah H

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?
October 8, 2009 by Suzie

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...
February 1, 2013 by JJ

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?
January 20, 2014 by Anonymous

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 ...
April 15, 2010 by ballamoney1

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 ...
April 8, 2012 by Betsy

Chemistry
23. In a chemical reaction, dynamic equilibrium occurs when the rate of the forward reaction becomes precisely equal to the rate of the reverse reaction. All of the following statements are true EXCEPT A. A dynamic equilibrium occurs when the reaction is more than 50 percent ...
June 8, 2014 by Emily

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. ...
July 10, 2011 by noob

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.
February 9, 2012 by Zack

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 ...
March 29, 2014 by HelpThankYou

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 ...
April 3, 2013 by Emily

chemistry
Consider the following two reactions: 5 Fe2+(aq)+MnO41-(aq)+8 H1+(aq)-->5Fe3(aq)+Mn2+(aq)+4 H2O(l) 2 MnO41-(aq)+5 C2O42-(aq)+16 H1+(aq)-> 2 Mn2+(aq)+CO2 g)+8 H2O(l) Both of these reactions result in the purple permanganate (MnO41-(aq)) ion reacting to form the colourless...
January 9, 2012 by sailor

chemistry Help
Consider the following two reactions: 5 Fe2+(aq)+MnO41-(aq)+8 H1+(aq)-->5Fe3(aq)+Mn2+(aq)+4 H2O(l) 2 MnO41-(aq)+5 C2O42-(aq)+16 H1+(aq)-> 2 Mn2+(aq)+CO2 g)+8 H2O(l) Both of these reactions result in the purple permanganate (MnO41-(aq)) ion reacting to form the colourless...
January 10, 2012 by sailor

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!
September 11, 2010 by Sara

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 ...
August 24, 2012 by Nunyaa

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 ...
January 3, 2008 by Carmen

Chemistry
Balancing Complete Redox Reactions I need help on the half reduction part for both reduction and oxidation of Cl2(g) --> cl^1- (aq) + OCl^1- (aq). I got both of the half reactions started. Cl2 --> Cl^- (Reduction) .... Cl^1- (aq) + OCl^1- (aq) (Oxidation). I need know ...
November 23, 2013 by Chris

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 ...
January 2, 2008 by Carmen

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
July 3, 2011 by ABCD

chemistry
consider the following reactions O+N2->NO+N Ea=315kj/mol Cl+H2->HCl+H Ea=23kj/mol Why is the activation energy for one much lower that the other. The frequency factor is very close in value for the two. Assume they are the same compute the ratio of the reaction constants...
October 29, 2010 by help

Chemistry
4. Use the information above to write net ionic equations for the two reactions that you have observed. 5. 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 ...
April 8, 2012 by Please Check!

Chemistry
How would you write these chemical reactions?Can someone do one or two reactions for each problem, so I could get an idea of to them? ..I'm nit sure how most of the oeoducts wouls turn out..especially if it is a precipitate. 5. When Mn^2+ ions are separated from the mixture, ...
May 10, 2014 by Jamie

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.
May 24, 2012 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....
July 30, 2007 by Shelley

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...
April 10, 2010 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...
April 10, 2010 by Crazy

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 ...
May 9, 2008 by Mable

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 ...
April 26, 2012 by Anonymous

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 ...
May 23, 2012 by Robert

chemistry
Which of the following are redox reactions? For those that are, indicate which element is oxidized and whisch is reduced. For those that are not, indicate whether they are precipitation or neutralization reactions. (a) P4(s) + 10HClO(aq) + 6H2O = 4H3PO4(aq) + 10HCl(aq) (b) Br2...
November 5, 2012 by MichaelF

Chemistry
How can you increase the concentration of the product (s) in each of these reactions by varying the temperature and pressure (caused by volume change)? 4NH3 + 5O2 <=> 4NO + H2O Delta H = -903.75 kJ Br2 + Cl <=> 2BrCl Delta H = 14.64 kJ Please help... With gaseous ...
May 2, 2007 by Linda

Biology
Which materials produce during the light reactions of photosynthesis are essential to the dark reactions? Light Reactions (Occurs in Grana) The purpose of the light reactions is to change light energy into chemical energy of ATP and NADPH. a) Require light b) Light makes ...
February 19, 2007 by Sara

chemistry
"Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of the following aqueous solution: CuBr2(aq)" Possible oxidation reactions: 1. 2Br- -> Br2 + 2e- = -1.09 2. 2H2O -> O2 + 4H+ + 4e- = -1.23 Possible reduction reactions: 1. ...
April 2, 2014 by Kate

science
Where does energy come from? Energy can come from the complete destruction of matter (as in nuclear reactions), or the rearrangement of electrons or other charged particles inside matter (as in chemical reactions) or from electromagetic fields (as in light and heat radiation...
July 24, 2006 by Sandra

Chem
A student placed a mixture of BaO and CaO in a 1.46L flask containing carbon dioxide at 35C and 746mmHg. After the reactions were complete she found that the CO2 pressure had dropped to 2.40 x 10^2mmHg. How many moles of CO2 were consumed in the reactions? Assume volumes of ...
March 3, 2010 by Staci

Chemistry
Would you store a solution of zinc nitrate in an aluminum container? Use half-reactions to explain your answer. Al ==> Al^+3 + 3e Zn ==> Zn^+2 + 2e Look up the above half reactions and you will see that the Al will go into solution and the Zn+2 will come out. Eventually...
January 21, 2007 by J.M.

Chemistry
The most chemically reactive metal elements are the alkali metals. They react spontaneously with water or other substances in the atmosphere and must be stored under oil. a. What type of reactions will these metals undergo? b. Explain why these metals are so reactive in the ...
November 19, 2013 by Heather

Chemistry
Calculate Activation Energy, Ea, for each of the reactions, above? ln(k)= -2.24x10^4(1/T)-1.8. The reactions are Step 1: 2H2 + N2 -> N2H4, Step 2: N2H4 + H2 -> 2NH3, Overall: 3H2 + N2 -> NH3. This is all the information i have. i Don't know how to solve for the ...
June 4, 2013 by Max

Chemistry
Choose the two half-reactions from a table of standard reduction potentials that most closely approximate the reaction that occur within the battery. What is the standard voltage generated by a cell operating with these half-reactions? 2Li(s) + Ag2CrO4(s) --------> Li2CrO4(...
May 7, 2011 by Jay

reactions!
metabolic reactions as exergonic or endergonic what? Food has stored chemical energy. THe body transforms that stored energy to useful energy in the process of metabolism. Energy is released from the food.
August 16, 2006 by Anonymous

Balance each of the following redox reactions occu
Balance each of the following redox reactions occurring in acidic solution a) SO32- (s) +MNO4- ---> SO42- +Mn2+ b) S2O32-+ Cl2 ---> SO42-+Cl-
August 5, 2009 by Sunshine

biology
4. Both photosynthesis and aerobic cellular respiration are examples of complex metabolic pathways, consisting of many linked chemical reactions that require enzymes to function. Briefly, explain two attributes of enzymes in catalyzing chemical reactions and in metabolic pathways
September 12, 2009 by lisa

chemistry
Reactions in which a substance decomposes by losing CO are called decarbonylation reactions. The decarbonylation of acetic acid proceeds as follows: CH3COOH(l)= CH3OH(g)+ CO(g. By using data from Appendix C in the textbook, calculate the minimum temperature at which this ...
February 14, 2012 by Anonymous

Chemistry
Balanced equations..done? Is each reaction a redox reaction? For those reactions that are redox reactions, I must identify the substance being oxidized and the substance being reduced... (a) Zn(s) + CoCl2 (aq) ---> ZnCl2 (aq) + Co(s) (b) HI(aq) + NaOH(aq) ---> H2 O(l) + ...
June 29, 2014 by MD

Biochemistry
explain why a strong acid or base can denature an enzyme explain how varying pH influenced the rate of the catalase reactions and explain why. explain the influence of temperature in excess of 50 degrees C on the influence of most enzyme controlled reactions. explain why this ...
October 28, 2009 by Zac

chemistry
serotonin is formed by 2 steps. first is the decarboxylation of tryptophan to form tyrptamine,second is the hydroxylation of typtamine to form 5-hydroxytyrptamine which is serotonin. can you help me illustrate these reactions? This reference has a figure showing one of the ...
July 6, 2007 by fifi

Science
Which compound causes the depletion of Earth's ozone layer? A. ultraviolet radiation B. chlorofluorocarbon C. carbon dioxide D. sulfuric acid B How does a nuclear power plant produce energy? A. through solar panels B. through nuclear fission reactions C. through geothermal ...
January 10, 2014 by Anonymous

chemistry
What is the difference between a galvanic cell and an electrolytic cell? A. A galvanic cell converts reduction reactions into an electrolytic cell, and an electrolytic cell converts oxidation reactions into a galvanic cell. B. A galvanic cell converts oxidation reactions into ...
October 20, 2014 by Morgan

Chemistry
What would the two half reactions be for 2Na+1MgBr2 arrow 2NaBr + Mg? I don't know how to determine this, other than that you separate the elements for the two half reactions. My other question is that when you're translating words and you have an element with Roman numerals ...
April 19, 2009 by Peter

Chemistry
Suppose a compound is involved in three different reactions denoted R1, R2, and R3. Tripling the concentration of this reactant in all three reactions causes the rates of reaction to increase by factors of 3, 9, and 1, respec- tively. What is the order of each reaction with ...
May 1, 2010 by Mitch

BIO HELP! Light Reactions + Calvin Cycle
Explain why the light reactions and the Calvin cycle are dependent on each other.
December 1, 2007 by Tina

chemistry
For the reactions that occurred spontaneously in the individual tables, balance these reactions assuming they are in an acidic solution. Reaction 1: Cu I^- Ag Br^- Reaction 2: Zn Pb Cu Ag Reaction 3: Cl2 Br2 I2 Reaction 1 I 2(aq) Cu2 + (aq) Ag + (aq) Br2 (aq) Reaction 2 Ag + (...
April 15, 2008 by Joseph

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members