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August 1, 2014

Search: Write a balanced chemical equation for the combustion reaction of C2H6O2

Number of results: 47,491

quantitative chemistry
Determine [Zn2 ], [CN], and [HCN] in a saturated solution of Zn(CN)2 with a fixed pH of 1.78. The Ksp for Zn(CN)2 is 3.0 1016. The Ka for HCN is 6.2 1010. I know the following is what needs to be done, but im unsure of how to go about it. 1. Write the pertinent ...
March 22, 2013 by Jackie

Chemistry
Oxidation of bis(bipyridine) copper (I) ion by molecular oxygen is described by the equation: Cu(C10H8N2)2+(aq) + O2(aq) ----products The reaction is first order in oxygen and second order in Cu(C10H8N2)2+ (a) Write the rate law (b) What is the overall reaction order? (c) How ...
March 7, 2013 by Sabrina P

Chemistry
The reaction between NO (nitric oxide) and oxygen is a key step in the formation of acid rain. O2(g) + 2NO(g) → 2NO2(g) A series of experiments were run, each of which starts with a different set of reactant concentrations. From each experiment an initial rate of ...
March 27, 2012 by Roman

chem - asap
write the equation for the reaction of fecl2 with k3[fe(cn)6]???
October 2, 2011 by Smarth

chem - asap
write the equation for the reaction of fecl2 with k3[fe(cn)6]???
October 2, 2011 by Smarth

CHEM - ASAPPP
write the equation for the reaction of fecl2 with k3[fe(cn)6]???
October 2, 2011 by david

Science
Hello. I have this question for my class. We were to mix Na2S2O3 to a a test-tube with Varsol layer on top and an Aqueous layer (of I2/KI) on the bottom. I observed a lighter colour change in both layers. How would I express that as a chemical equation? Also, I added saturated...
March 9, 2014 by Karan

Chemistry
2 H2S (g) + SO2 (g) <===> nn3 S (s) + 2 H2O (g) 1) At 298 K, the standard enthalpy change, HX, for the reaction represented below is -145 kilojoules. (a) Predict the sign of the standard entropy change, SX, for the reaction. Explain the basis foryour prediction. (b) ...
April 29, 2008 by JJ

chemistry
Unsure how to solve this without a formula... I think its combustion analysis? CxHy + O2 --> CO2 + H20 CxHY has a MW=78g/mol. 100g of CxHy yields 338g CO2 and 138g of H2O. What is the formula CxHY (what are x and y)? Balance the reaction equation. Any help at all is ...
April 1, 2014 by Susan

chem
Write the complete ionic equation for Cu(NO3(aq)+K2S(aq)and namd write the formula for the spectator ions in this reaction? This is what I got pls. check it: complete ionic equation: Cu^19aq)+K^1(aq)+S^-2(aq)=K^1(aq)+NO3^-1(aq)+Cu2S(s) net ionic equation: Cu(aq)+s^-2(aq)=Cu2S(...
October 5, 2012 by Amanda

Chemistry
CuSO4(aq) + 4NH3(aq) → [Cu(NH3)4]SO4(aq) I know that adding nitric acid will reverse the reaction. But what is the actual chemical equation? [Cu(NH3)4]SO4(aq) + HNO3(aq) --> ???
June 10, 2010 by elin

chemistry
i am having trouble answering this question. Help please! The balanced chemical equilibrium equation to show the formation of the calcium carbonate solid in limestone caves is CO2(g) + H2O(l) + CaCO3(s)  Ca2+(aq) + 2HCO3(aq) Use Le Chateliers principle to predict what ...
February 27, 2010 by Evan

science(Chemistry)
Calculate the concentration of the NaOH solution. If 30,0cm3 of a standard oxalic acid[(COOH)2] solution of concentration 0,5 mol.dm-3,is used to neutralize 25,0 cm3 of a sodium hydroxide (NaOH) solution. The balanced chemical equation for the reation is (COOH)2(aq) + 2NaOH(aq...
July 14, 2011 by Ntombikayise

Chem
Citric acid (H3C6H5O7) is triprotic acid which reacts with NaOH according to the balanced chemical equation shown below what volume of 0.200m Naoh is required to titrate 7.50ml of lemon juice which is 0.245 m in citric acid? H3C6H5O7+3NaOH->Na3C6H5aO7+ 3H2O
April 21, 2013 by Ray

chemistry
An aluminium can contains ferrous sulphate solution. It is observed that after a few days it develops holes in it. Explain the observation and write the chemical equation for it.
May 31, 2011 by riya

chemistry
1. How many grams of P4 will react with 35.0 grams of H2O according to the balanced equation P4+5O2+6H2O=4H3PO4? 2. If you have 50 grams of P4, 40 grams of H2O, and an unlimited supply of O2, which reactant (according to the above balanced equation) is the limiting reactant? ...
October 16, 2011 by Carly

chemistry
One reaction that produces hydrogen gas can be represented by the unbalanced chemical equation Mg(s) + HCl(aq) −! MgCl2(aq) + H2(g) . What mass of HCl is consumed by the reac- tion of 2.96 mol of magnesium? Answer in units of g
February 23, 2013 by Anonymous

Chemistry
Completion A substances that undergo a chemical change are the _________. The new substances formed in a chemical reaction are the _________. reactants, products.
March 16, 2007 by Bryan

chemistry
In the fifth reaction of Glycolosis, G3P dehydrogenase converts glyceraldehydes-3-phosphate into glycerate-1,3-bisphosphate. In order to make the reaction spontaneous at biological conditions it must be coupled to the reduction of NAD+. a) DG for the reaction of just G-3-P, ...
February 11, 2009 by kat

Chemistry
write the chemical equation for the following: solid ammonium nitrite decomposes to form an inert gas and water vapor. so, I think it's NH4NO2 ----> H2O + I can't think of, but I can't think of what to do with N because N is not an inert gas... Am I interpreting the ...
April 28, 2009 by Lucy

chemistry
ZnCl2(aq)+Na2CO3(s)--> ZnCO3(s)+NaCl (aq) Balance the chemical equation and state solid, liq, gas, aq properly to each compound Ok I have it balanced by 2 NaCl in the second part of the equation But now what is the total ionic and net ionic equations. I think: Al +3Cl+3NH4...
November 29, 2011 by Ashley

volume stoichiometry
Determine the volume of oxygen that is needed at STP to completely react with 5.63 g of potassium. 4K + O2 yields 2H2O I don't buy the equation. If K is reacting with oxygen, then the equation is 4K + O2 ==> 2K2O Actually, I think it forms K2O2. Do you have any information ...
March 19, 2007 by shelley

Chemistry
Hi Dr. Bob, I am quite stumped on how to figure out when chemical equations have a REACTION or NO REACTION. I have read the material in my textbook and even took out a chemistry books for the "Utterly Confused" to try to figure this out. Example: Zn(s) + H3PO4(aq)--> Zn3(...
March 16, 2012 by Julie

chemistry
For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium ...
April 23, 2012 by Anonymous

chemistry
For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium ...
April 24, 2012 by Anonymous

Physics
What is the gibbs free energy for the reaction a)temperature b)800 degrees celsius c)comment on whether the reactions are spontaneous or not (CHEMICAL REACTION) deltaH = -100kJ delta S= -200 J/K
March 18, 2013 by Sarah

Chemistry
Could someone please tell me if I did this question right? An incomplete reaction of 12.125 grams of propane proceeds as follows. 2C3H8+11O2 --> 3CO2+4H2O+2CO+C(s) How many grams of solid carbon residue are produced as a product? My answer: Step 1) Balanced the given ...
October 17, 2009 by Adam

chemisrty
Q5) The reaction for the combustion of propane is as follows: C3H8 + 5O2 ---->>3CO2 + 4H2O 1. If 20.0 g of C3H8 and 20.0 g of O2 are reacted, which is the limiting reactant? 2. How many grams of H2O can be produced? 3. How many grams of the excess reactant remains at the...
January 16, 2012 by lyan

chem lab
0.8100g MgO(s)(40.3g/mol) was reacted with 52.3 ml 1.00M HCl(density= 1.00g/ml) in the coffee cup calorimeter, and the observed temperature change was +10.4 degree Celsius. write the equation for this reaction, determine the limiting reactant and find difference H for the ...
February 12, 2014 by mann

chemistry
How do I calculate the mas of oxygen that combines with one mol of arsenic atoms to form the oxide of arsenic? How would I use this answer to obtain the empirical formula of the oxide? The formula for the most common form of arsenic oxids is As2O3. Write down the balanced ...
February 25, 2007 by Laura

Chemistry
Please Help me with my chemistry Review I have a test tommorow? Please help me with my review my test average is low and i need at least a b to pass the class for the six weeks I am freaking out!!!! I care more about showing work i dont want answers I just want help on how to ...
February 28, 2008 by anon

To: Bobpursely
You helped me with my observations yesterday, but I need help with my questions as well. I tried to answer as many as I could by myself, but I'm having difficulties understanding some. Pointing me towards the right direction would be helpful, thanks. Questions: Which changes ...
April 7, 2010 by Sara

chem - check euqation please
suggest a test chemical that can be added to the water sample to precipate the lead (II) ions. Show a chemical equation for the formation of the precipate you have chosen. I chose Hg(N03)2 so Pb2 + Hg(NO3)2 -->Pb(NO3)2 = Hg I know I still have to balance it but is my ...
May 28, 2008 by Emily B

chemistry
a chemical reaction occuring in a cylinder equipped with a moveable piston produces 0.58 mol of a gaseous product. If the cylinder contained 0.11 mol odf gas before the reaction and had an initial volume of 2.1 L, what was its volume after the reaction
May 15, 2011 by celina

Chemistry
I am translating the sentence "HF can be added to calcium carbonate to produce aqueous calcium fluoride carbon dioxide (CO2) and liquid water" into a chemical equation. I'm not sure how you write out Calcium Carbonate symbolically, or how you write clacium fluoride. Thanks for...
April 2, 2009 by Gwen

chemistry
For the reaction H2(g) + I2(g) 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium ...
May 4, 2012 by Anonymous

Chemistry
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin and silver: Sn(s)|Sn2 (aq)||Ag (aq)|Ag(s) what is the equation for cathode, anode, and net cell reaction
February 27, 2012 by Katie

Chemistry
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin and silver: Sn(s)|Sn2 (aq)||Ag (aq)|Ag(s) what is the equation for cathode, anode, and net cell reaction
February 27, 2012 by Katie

12th grade
Write the chemical equation for Sulfiric Acid and potassisum sulfate the product is potassium sulfate and water.
February 16, 2009 by Liz

Chemistry
This question is very confusing, I do not understand what it wants me to do. Each reaction below has been identified by type. Use this information to help predict products. Copy and then complete each equation by writing the products of the reactions. Remember to include ...
July 15, 2010 by Derrick

CHEMISTRY
******* Please check. Also check sig figs. Ion Concentrations 1.) A solution is prepared by dissolving 5.00 g of stannic nitrate in enough water to make 250.0 mL of stock solution. A 15.0 mL aliquot (portion) of this stock solution is then removed and added to 75.0 mL of water...
October 25, 2013 by Anonymous

chemistry
how can AgCl(s) be dissolved completely? write an equation for the reaction
October 25, 2010 by anon

chemistry
write the equation for the reaction of mixing 4 ml of 3 M (ho)2so2 with 7 ml of 0.2 M naclo4
December 4, 2011 by Anonymous

Chemistry
Write the equation for the reaction of mixing 2 ml of 3 M (HO)2SO2 with 9 ml of 0.2 M NaClO4
December 4, 2011 by Anonymous

Chemistry
Write the equation for the reaction of mixing 2 ml of 3 M (HO)2SO2 with 9 ml of 0.2 M NaClO4
December 4, 2011 by Anonymous

Chemistry Lab
So we prepared 100mL of .1M solutions of these solutions, and found the pH and H+ contents: pH H+ HCl: .57 .270 HNO3: .58 .260 H2SO4: 1.29 .051 HC2H3O2: 2.44 .0036 H2C2O4: .84 .145 HKC6H4(CO2)2: 4.13 7.41 Now I'm stuck on this question. What conclusions can be drawn from this ...
March 21, 2011 by Adrianna

chem
What is the percent yield for a reaction when 166.3 grams of W2O3 combines with Carbon Monoxide but only produces 147.8 grams of W? chemical equation is W2O3+3CO------>2W+3CO2
October 26, 2012 by Carina 78

Sciece (chemistry)
Sodium Chloride NaCl can be made by the reaction of sodium with chlorine. Balanced equation: 2Na(s)+Cl2(g)=2NaCl(s) Calculate the maximum mass of sodium chloride which could be obtained from 92g of soium?
September 25, 2007 by Ben

chem
I can't seem to figure this out! I know I have to use mass to mass conversions though. Can someone help me out? Hydrochloric acid can dissolve solid iron according to the following equation: Fe + 2HCl to form FeCl2 + H2 a) How much HCl in grams would you need to dissolve a 2.8...
March 1, 2007 by Abby

Science -- same q, dont reply if you dont know!
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
September 17, 2009 by Lauren

chemistry
I have to write a balanced equation for the reaction of a solid lead being added to a solution of silver nitrate. Solid silver forms and the lead disappears as it goes into the solution as lead (ii) nitrate. I think it should be Pb + AgNO3 >>>> Ag + Pb(NO3)2 does ...
April 14, 2014 by jazz

Chemistry
Rates of reaction, redox reactions? 10 points? An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq) > C4H9OH(l) + Br-(aq) This reaction was ...
March 30, 2012 by Local

to bobpursley,math
This is what i have am i wrong or correct.Or how can word it or modify it to be with what the directions are asking? Directions: Create one statement in English representing an algebraic relationship. My answer: PROBLEM: A DOZEN EQQS COST $1.20. WHAT IS THE PRICE OF EACH (1) ...
January 1, 2007 by jasmine20

chem
In the following balanced neutralization reaction equation, how many moles of HCl are required to completely neutralize 0.040 moles of NaOH? HCl + NaOH d NaCl + H2O
February 25, 2014 by michael

chemistry
How do these things shift the direction of a chemical reaction?: -adding/removing reactants -adding/removing products -adding/removing energy Thanks! It depends upon the equation and whether the reaction is exothermic or endothermic. Post the entire problem and tell us what ...
March 15, 2007 by Mira

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

Chemistry
What would the equation be for the reaction between potassium permanganate and cyclohexene. I know it's a oxidation reaction but not sure of the equation.
February 28, 2011 by Lizzy

Chemistry
1. net ionic equation for the reaction of tin (II) and solid mercury chloride to yield tin (IV), liquid mercury and chloride ion 2. net ionic equation for the reaction between solid SbOOH and H2S I am not too sure about my equations, so I was wondering if someone could check ...
July 20, 2009 by Soojung

Chemistry
write balance chemical equation for gaseous hydrogen gas to form gaseous methane ch4 and liquid water.
October 7, 2010 by Niki

chemistry
write a balanced reaction for 50.92 grams of carbon disulfide,including molar masses. then calculate the moles of carbon disulfide and oxygen. now find the mass of oxygen consumed in the reastion. HELP!!!
June 24, 2008 by jessie

Chemistry
Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work: 4CaCO3+Al2(SiO3)3->CaO(s)+4CO2(g)+Al2O3+3CaSio3 I ...
January 29, 2011 by Jim

Chemistry
Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work: 4CaCO3+Al2(SiO3)3->CaO(s)+4CO2(g)+Al2O3+3CaSio3 I ...
January 29, 2011 by Jim

Setting up a chem problem
Magnesium reacts with water in the equation, Mg+2HO-->Mg(OH)+H. You have 8.1 g of magnesium available. This means you will need ___ g of water to use all the magnesium. This seems sorta simple, but how can i set it up? These are stoichiometry problems. They can be solved...
January 18, 2007 by Briana

Chemistry
write the following chemical equation for this equation In water,iron (III) chlroide reacts with sodium hydroxide, producing solid iron (III) hydroxide and sodium chloride? can you help me figure this out I am confused
January 26, 2009 by Ashley

chemistry
when aqueous solutions of copper II nitrate and sodium phosphate are mixed, sodium nitrate and copper II phosphate are formed. In the balanced chemical equation what is the coefficient of sodium nitrate?
May 6, 2010 by grace

SCIENCE PLEASE HELP ME!!!!!!!! ASAP PLEASE PLEASE
Which chemical equation is balanced? (1 point) H20 H2 + 2O2 2H20 2H2 + O2 2H2O H2 + 2O2 H20 2H2 + 2O2 i think its c
April 9, 2014 by Anonymous

chemistry
a student dissolves 0.625 g of pure benzoic acid in distilled water and titrated the resulting solution to the equivalence point using 40.8 mL of the standardized NaOH solution from Part a, assuming that benzoic acid has only one ionizable hydrogen, answer the following: ...
November 4, 2011 by Anonymous

Chemistry
Completion Mole ratios from balanced equations may be used to solve problems with other units such as numbers of ______ and _______ of gases at STP. The _______ from the balanced equation are used to write conversion factors called ________. grams and volume of gases @STP (but...
April 26, 2007 by Bryan

chemistry 2
A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that thesilver electrode is positive. -Write balanced half-reactions and the overall spontaneous reaction.
April 27, 2012 by anonymous

Chemistry
How many milimetres of 0.114 M sulphuric acid solution provide the sulfuric acid required to react with the sodium hydroxide in 32.3 ml of 0.122 M NaOH according to the following equation? H2SO4 + 2 NAOH ---> Na2SO4 + 2 H20 A millimeter is a unit of length, not volume. I am...
September 11, 2006 by Cadi Almond

chem
I have to balance an equation and I had to make the equation from an experiment we did. So far, my equation looks like this and I know what I have is correct: Cu(NO3)2+H20+NaOH----->Cu(OH)2 I think I probably need an N or a Na on the right side. What do you think? You don't...
March 5, 2007 by Abby

Chemistry
How would I figure out what is produced during a chemical reaction between 0.5 grams of sodium bicarbonate and 3 grams of citric acid? I know that it produces carbon dioxide and water but my professor said I am missing something from my equation.
June 26, 2012 by Zach

Chemistry
3.25g of zinc was added to 50cm^3 of a 4.0 molar dm^-3 HCl. When the reaction was completed the temperature rose by 28 degrees celcius. (a) Is the reaction exothermic or endothermic? (b)All the zinc dissolve in this reaction. How many moles of zinc reacted? (c) How many moles ...
March 24, 2014 by Jessica

AP Chemistry
C2H2(g) + 2H2(g) --> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following table: C2H2(g) 226.7 kj/mol C2H6(g) -84.7 kj/mol [the values are the change in enthalpy] a. write the equation for the heat formation of ...
September 27, 2009 by Anonymous

Chemistry
Describe nuclear fission and write a nuclear equation to describe the fission of U-235? Uranium-235 undergoes neutron-Induced fission to produce Xe-144 and Sr-90. Write a nuclear equation for the reaction. How many neutrons are produced?
November 10, 2012 by Nomi

Science
Please summarize this. I got it from a website and im doing my notecards. Im not trying to plagiarize, Im just not a science person. Please just summarize it so I can just understand it so I can explain it in my own words: The light reaction happens in the thylakoid membrane ...
October 14, 2013 by Losa

chemistry
The problem: Nitrogen can react with steam to form ammonia and nitrogen monoxide gas. A 20.0L sample of nitrogen at 173C and 772mmHg is made to react with an excess of steam. The products are collected at room temperature (25C) into an evacuated flask with a volume of 15.0 A. ...
June 17, 2009 by Gweedo

chemistry
I was way off on the other problem. But I see how you got the answer. Last one...thanks i'm learning more here thn class What is the sum of the coefficients (including 1) of the following reaction? Sodium sulfate + calcium hydroxide ??? Write the equation (double ...
January 29, 2007 by key

Chemistry
Balance the equation and write the reaction-quotient expression, Qc. U(s) + F2 (g) <----> UF6 (g)
October 15, 2012 by Andrea

college chem
Write a chemical equation to express the fact that, at 0 C, ice melts by absorbing 334 J of heat per gram of ice.
November 10, 2010 by Brittney

chemistry 1
if 20.2g of zn react with and equal amount of magnesium chloride to form magnesium and zinc chloride[zn+mgcl2> mg+zncl2] a.what is the limiting reactant? b. how much magnesium will be produced? Here is the way to solve most of these stoichiometry problems. Step 1. Write the...
May 11, 2007 by sam

chemistry
Hydrazine has the molecular formula N2H4 and is a volatile colourless liquid often used in industrial processes and as a rocket fuel. It has a single NN bond in its structural formula. When hydrazine is heated it produces ammonia (NH3) and nitrogen (N2) gases. When used to ...
January 25, 2011 by rebecca niles

Thermo
Calculate the standard cahnge in enthalpy for the combusation of coal/ Show the balnaced reaction. How does one get the balanced reaction of coal? Coal has many substances that make up its compsistion
March 18, 2012 by Scott

Chemistry
the standard free energy change for a chemical reaction is +13.3 kj/ mol. What is the equilibrium constant for the reaction at 125 degree C ? (R= 8.314 j/mol )
April 4, 2012 by nurcan

Chemistry
Ephedrine, which is used as a bronchodilator, has the chemical formula C10H15NO. What mass of H2O would be produced during a combustion analysis of 0.4817 g of ephedrine? Answer in units of g.
September 9, 2010 by C

Chem -3A
Please help me with this problem Avogadro's Law A chemical reaction occuring in a cylinder equipped with a movable piston produces 0.58 mol of gaseous product. If the cylinder contained 0.11 mol of gas before the reaction and had an initial volume of 2.11L, what was its volume...
July 23, 2008 by shylo

AP Chemisty
N2(g)+3F2 yields 2Nf3(g) Delta H(degree)298=-264KJ mol-1;Delta S(degree)298=-278J K-1 mol-1 The following questions relate to the synthesis reaction represented by the chemical equation above. a.)CAlculate the value of the standard free energy change, Delta G(degree)298, for ...
June 7, 2007 by Jenna

gen chem
A nuclear reaction, such as the transmutation of uranium-238 to a stable isotope lead-206, involves exothermic and endothermic processes. In this reaction, is there any physical and chemical changes involved?
August 8, 2010 by Anonymous

Science
When a chemical reaction is carried out in an industrial setting, it is very common to have one of the reactants present in an excess amount above the stoichiometric quantity that would be needed for the reaction. Why?
April 12, 2011 by Nicole

chemistry
The chemical reaction for dissociation of an acid is: HA + H2O → H3O+ + A- Assuming all of the hydronium ion (calculated in in the previous problem) comes from this reaction, what is the concentration of conjugate base, [A-], in this system?
May 4, 2014 by sarah

Chemistry
Chemistry HELP - Rates of reaction, redox reactions? 10 points? An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq) > C4H9OH(l) + Br-(aq) ...
March 27, 2012 by Lola

math
one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
May 14, 2013 by ji

Geometry
one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
May 14, 2013 by ji

Chemistry 101
Write the reaction that occurs when sodium phosphate and barium chloride react. Be sure to include the phase labels. Then write the total ionic reaction and the net ionic reaction including proper phase labels.
June 3, 2009 by Juggernaut

science
in a certain chemical reaction, two reactants undergo change to form two products why cant you determine what type of reaction occurred from this information
April 29, 2010 by lady t

chem
What mass of copper(II) nitrate would be produced from the complete reaction of 25.1 g of copper, according to the chemical reaction shown below? Cu + 2 AgNO3 ----> Cu(NO3)2 + 2 Ag
September 15, 2010 by vanessa

chemistry
What mass of copper(II) nitrate would be produced from the complete reaction of 25.1 g of copper, according to the chemical reaction shown below? Cu + 2 AgNO3 ----> Cu(NO3)2 + 2 Ag
September 15, 2010 by sarah

Chemistry
If 0.0308 M aqueous FeCl3 is produced stoichiometrically according to the balanced equation in a reaction solution with a total volume of 1200 mL, what mass (g) of gaseous H2S is produced? Fe2S3(s) + 6HCl(aq) 3 H2S(g) + 2 FeCl3(aq)
April 6, 2010 by Adam

Chem
The electrochemical cell described by the balanced chemical equation has a standard emf of -0.25 V. Calculate the value (kJ) for the ΔG˚ of the cell. Round your answer to 3 significant figures. MnO2(s) + Pb2+(aq) → Mn2+(aq) + PbO2(s) St. Red. Pot. (V) PbO2/Pb2...
November 14, 2011 by Jess

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