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April 19, 2014

Search: given the following reaction at .

Number of results: 74,480

chemistry
Choose all of the following statements about the equilibrium constant K that are true: (a) If the K value for a reaction is > 1 then Go must be negative for this reaction (b) A large value for K implies there is a strong driver for the reaction to proceed in the forward ...
Sunday, March 28, 2010 at 4:33am by James

Chemistry
Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster. (2)Increasing the ...
Wednesday, January 26, 2011 at 9:59pm by Michael

Chemistry
Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster. (2)Increasing the ...
Thursday, January 27, 2011 at 2:26pm by Michael

science
Given the following reaction, with Kp=1.05 at 250 degrees C what is Kc? The reaction is PCl5 to PCl3+Cl2
Tuesday, April 13, 2010 at 1:54pm by Nick

chemistry
Given one of the starting materials and end product for the following reaction, show all reactants, reaction conditions in brackets (where known) and products. ethanol from calcium carbide
Wednesday, April 30, 2008 at 6:12pm by Priya

chemistry
Given one of the starting materials and end product for the following reaction, show all reactants, reaction conditions in brackets (where known) and products. acetic acid from chloroethane
Friday, May 2, 2008 at 1:36pm by Priya

Chem
Given the following hypothetical reaction: 2 E(g) + F(g) + G(g) products. If the rate law is: Rate = k[E]2[F]-1, what is the overall order of reaction? 1. a. zero 2. b. first 3. c. second 4. d. third
Saturday, April 24, 2010 at 6:40pm by Mark

chemistry
The reaction described by this equation O3(g) + NO(g) -- O2(g) + NO2(g) has the following rate law at 310 K. rate of reaction = 3.0x10^6 M^-1 s^-1)[O3][NO] Given that [O3]=2.0 104 M and [NO]=2.0 105 M at t=0, calculate the rate of the reaction at t=0.
Friday, March 23, 2012 at 1:34pm by Katie

chemistry
Calculate the value of the equilibrium constant, Kp , for the following reaction at 298.0 Kelvin. (Use the reaction free energy given below.) 2SO3 = 2SO2 + O2 in the gaseous state ΔG = 140.0 kJ/mol
Tuesday, October 12, 2010 at 10:46pm by lizz

chemistry
Calculate the value of the equilibrium constant, Kp , for the following reaction at 298.0 Kelvin. (Use the reaction free energy given below.) 2SO3 = 2SO2 + O2 in the gaseous state ΔG = 140.0 kJ/mol
Tuesday, October 12, 2010 at 10:47pm by lizz

chem
Butadiene can undergo the following reaction To form a dimer(two butadiene molecules hooked together). 2c4h8---->c8h12. The half life for the reaction at a given temperature is 5.92x10-2 sec. The reaction kinetics are second order. 1. If the initial concentration of c4h8 is...
Sunday, March 25, 2012 at 5:14pm by court

Chemistry
A reaction is said to be diffusion controlled when it occurs as fast as the reactants diffuse through the solution. The following is an example of a diffusion controlled reaction. The rate constant for this reaction is 1.4x1011 M-1s-1 at 25oC and the reaction obeys the ...
Tuesday, May 19, 2009 at 11:59pm by Kevin

chemistry- thank you
If the H of reaction for the following 2ZnS (s) + O 2(g) = 2ZnO (s) + 2S (s) is -290 kJ, then what is the H of reaction for the following reaction: ZnO (s) + S (s) = ZnS (s) + 1/2O 2(g)? Would i flip the first equation? then after that i am lost
Sunday, October 17, 2010 at 10:46pm by nalleli

Chemistry
Consider the following reaction: H2(g) + I2(s) ---> 2HI(g) TriangleH = 51.9 kj (enthalpy) Calculate the standard enthalpies of reaction for the following reaction: 6HI(g) ---> 3H2(g) + 3I2(s) Thanks!
Saturday, April 28, 2012 at 6:54pm by Sandy

science
For the following reaction if the reaction temperature was increased would the equilibrium shift to the right or the left,not shift at all,or you cant answer the question because Keq is not given? 2SO3(g)<-->2SO2(g)+O2(g)..(deltaH degrees =198kj) Why???
Monday, May 10, 2010 at 7:47pm by Andy

chemistry
Given the following reaction: TiCl4 + O2→ TiO2 + Cl2 If 51.44 g TiCl4 react with 82.32 g O2 complete a mass balance table for this reaction.
Thursday, November 17, 2011 at 4:55pm by mary

Chemistry
Use enthalpies of formation from the textbook to calculate the standard enthalpy of the reaction for the following methane- generating reaction of methanogenic bacteria given delta Hf of CH3NH2=-22.97kJ/mol: 4CH2NH2+2H2O----->3CH4+CO2+4NH3
Sunday, November 6, 2011 at 3:26pm by Kay

chemistry
given the equilibrium constant for the following reaction at 500 K, 2 NO (g) + O2 (g) <==> 2 NO2 (g) Kc = 6.2x10^5 calculate the equilibrium constant for the reaction expressed as partial pressures, Kp. the answer is 1.51x10^4. How do i get this?
Wednesday, March 28, 2012 at 5:00pm by alex

Chemistry
The Kc for the following reaction at 940oC is 1.38. Given the concentrations [CO2] = 0.500 M, [H2] = 0.425 M, [CO] = 0.610 M and [H2O] = 0.695 M, one can conclude that: H2(g) + CO2(g) ↔ CO(g) + H2O(g) Question 8 options: A) the system is not at equilibrium and the ...
Thursday, May 10, 2012 at 11:36pm by Katie

chemistry
State whether each of the following will increase,decrease or unchange when catalyst is added to the reaction and give an explanation for your answer please a) rate of reaction b)activation energy c)reaction enthalpy d)equilibrium of reaction
Saturday, July 9, 2011 at 1:00pm by Gift

Chemistry
The following reaction was studied at −10C. 2 NO(g) + Cl2(g) → 2 NOCl(g) The following results were obtained where the rate of the reaction is given below. [NO]o [Cl2]o INITIAL RATE 0.10 0.10 0.18 0.10 0.20 0.36 0.20 0.20 1.45 What is the rate law? What is the ...
Tuesday, March 20, 2012 at 12:22am by Kaleen

Chemistry II
A solution contains the following: NH3(aq) + H2O(l) <--> NH4+(aq) + OH-(aq) Adding NH4Cl to this solution shifts the equilibrium of the given reaction to the left. What kind of reaction is this?
Wednesday, October 28, 2009 at 12:01pm by Mandy

Chem
An important process for the production of acrylonitrile C3H3N is given by the following reaction 2C3H6 + 2NH3 + 3O2 --> 2C3H3N + 6H2O A 150 -L reactor is charged tot he following partial pressures at 25 C
Sunday, March 4, 2007 at 1:22am by Steve

chemistry
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 4 KHCO3 + 3 O2 How many moles of H2O are needed to react with 12.15 moles of CO2? moles A chemical reaction occurs between solutions of LiCl and silver nitrate. This reaction produces a precipitate that is recovered, dried ...
Friday, October 22, 2010 at 5:21pm by Erika

College Chemistry
Consider the following symbolic reaction in which the hypothetical elements hearts () and diamonds (♦) react to produce the compound spades (). + ♦ . Which of the following represents the number of spades () produced for the complete ...
Monday, March 26, 2012 at 9:19pm by Lisa

chem
Calculate the standard enthalpy change for the reaction 2A+B->2C+D Use the following data: Substance A=-257kj/mol B=-413kj/mol C=189kj/mol D=-475kj/mol For the reaction given , how much heat is absorbed when 3.00mol of A react?
Wednesday, October 8, 2008 at 4:29pm by tomi

chemistry
LeChatelier's Principle !!!! ? plz help me with this problem the following reaction may be used to remove sulfur compounds from power plant smokestack emission. 2HS(g) + SO2 >>>> 3S + 2H2O ...... DELTA h = -145 KJ the value of the euilibrium constant for this ...
Saturday, January 14, 2012 at 5:08pm by klove12

Chemistry
An important process for the production of acrylonitrile C3H3N is given by the following reaction 2C3H6 + 2NH3 + 3O2 --> 2C3H3N + 6H2O A 150 -L reactor is charged tot he following partial pressures at 25 C P(C3H6) = .5 MPa P(NH2) = .8 MPa P(O2) = 1.5 MPa What mass of ...
Sunday, February 25, 2007 at 5:27pm by Kim

chemistry
I am given the following reaction: 2NH3(g) -----> N2(g) + 3H2(g) 6.4 mols of ammonia gas has been put into a 1.7 L flask and has been permitted to reach equilibrium in accordance to the reaction listed above. If the equilibrium mixture has 4.2 mols of nitrogen, what is the ...
Monday, May 26, 2008 at 7:37pm by Eric

SCIENCE 1
for following reaction at equilibrium if we increase the reaction temperature the equilibrium will 2SO3(g)<-->2SO2(g)+O2(g)(deltaH degrees=198kJ) A. not shift B.the question can not be answered because Keq is not given C.shift to the right D. shift to the left I am going...
Tuesday, May 11, 2010 at 7:19pm by Dave

chemistry plse help
Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: P4(g) + 10 Cl2(g) → 4PCl5(s), ΔH°rxn = ? Given: PCl5(s) → PCl3(g) + Cl2(g), ΔH°rxn= +157 kJ P4(g) + 6 Cl2(g) → 4 PCl3(g), ΔH°rxn = -1207 kJ
Wednesday, April 27, 2011 at 8:05pm by yr

chemistry
the following reaction may be used to remove sulfur compounds from power plant smokestack emission. 2HS(g) + SO2 >>>> 3S + 2H2O ...... DELTA h = -145 KJ the value of the euilibrium constant for this reaction is 8.0*10^15 at 25 degree celsius. a). given the value of...
Sunday, January 15, 2012 at 7:05pm by klove12

Chemistry
The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)----> E(g) Delta H rxn=-26.1kJ/mol and Delta S rxn=-69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.
Tuesday, January 31, 2012 at 1:06pm by Kay

Chemistry
The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)----> E(g) Delta H rxn=-26.1kJ/mol and Delta S rxn=-69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.
Tuesday, January 31, 2012 at 7:04pm by Kay

Chemistry
The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)----> E(g) Delta H rxn=-26.1kJ/mol and Delta S rxn=-69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.
Friday, March 21, 2014 at 1:32am by AAdd

Chemistry
H2 and F2 react according to the following equation, forming HF. H2(g) + F2(g)  2HF(g); H = 271 kJ If H2(g) and F2(g) were mixed in a thermally insulated vessel, the reaction that occurred would be a. endothermic, and the temperature of the reaction system ...
Tuesday, July 2, 2013 at 8:01pm by Kayla

chemistry
Alison is nearly correct. The reaction of oxygen with copper metal we would class as oxidation as the only products formed are oxides of copper, depending on the conditions. The reaction is relatively slow and while the reaction is exothermic, no light is given out on a small ...
Thursday, September 1, 2011 at 12:37am by Dr Russ

chemistry
Given the following reaction: Pd(NO3)2+CaSO4-->PdSO4+Ca(NO3)2 If you started with 225.6ml of 6.32M CaSO4 and the percent yield of this reaction was ol 78.2%, what is the actual yield of grams mod of PdSO4?
Saturday, December 4, 2010 at 11:23pm by regina

Chemistry
The following is given: 20 ml of HCl (2.0 M) added with 5 ml of Na2S2O3 (0.3 M) with 5 ml of H2O S2O3^-2(aq) + 2H^+1 (aq) --> S (s) + SO2 (g) + H2O (l) Calculate the following: a) Reaction rate when 30 mg of sulphur is formed (in 30 ml of solution) after 55 seconds. b) Rate...
Wednesday, October 20, 2010 at 12:50pm by Stephanie

Enthalypy Reaction
What is the standard enthalpy of reaction for the following chemical reaction? CO2(g) + 2KOH(s) --> H2O(g) + K2CO3 (s) Express your answers numerically in kJ.
Tuesday, September 23, 2008 at 2:00am by Sarah

physics - stopping distance
when a driver brings a car to a stop by breaki.g as hard as possible the stopping can be regarded as the sum of reaction distance and breaking distance. tje following data are given, v1 m/s contains 10,20,30. reaction distance are 7.5, 15, 22.5. the breaking distance are 5.0, ...
Thursday, April 25, 2013 at 12:03pm by gladys

chemistry
Determine Kc at 298 K for the reaction 2 CH4(g) reverse reaction arrow C2H2(g) + 3 H2(g), given the following data at 298 K. (Hint: How are Kc and Kp for the reaction related?) CH4(g) + H2O(g) reverse reaction arrow CO(g) + 3 H2(g) Kp = 1.2 multiplied by 10-25 2 C2H2(g) + 3 O2...
Wednesday, March 24, 2010 at 6:21pm by Jenny

chemistry
The following reaction was carried out in a 2.00 reaction vessel at 1100 : C+H2O -> C)+H2 If during the course of the reaction, the vessel is found to contain 7.00mol of C, 13.3mol of H2o, 3.80mol of CO, and 7.20mol of H2, what is the reaction quotient ? Enter the reaction ...
Sunday, April 28, 2013 at 2:13pm by JAclyn clark

chemistry
I am given the following reaction: 2NH3(g) -------> N2(g) + 3H2(g) My question is: 6.4 mols of ammonia gas has been put into a 1.7 L flask and has been permitted to reach equilibrium in accordance to the reaction listed above. If the equilibrium mixture has 4.2 mols of ...
Monday, May 26, 2008 at 12:19pm by ChemTeach

chemistry
I am given the following reaction: 2NH3(g) -------> N2(g) + 3H2(g) My question is: 6.4 mols of ammonia gas has been put into a 1.7 L flask and has been permitted to reach equilibrium in accordance to the reaction listed above. If the equilibrium mixture has 4.2 mols of ...
Monday, May 26, 2008 at 7:17pm by Shivani

chemistry
Consider the following reaction in a closed reaction flask. If 0.600 atm of gas A is allowed to react with 1.20 atm of gas B and the reaction goes to completion at constant temperature and volume, what is the total pressure in the reaction flask at the end of the reaction? ...
Wednesday, November 9, 2011 at 12:10am by Celeste

chemistry
given this reaction N2O5 -> 2 N2O + 1/2 O2 all gases and given the initial pressure (P Initial) and total pressure (P total)at any time, relate the partial pressure of N2O5 (PP N2O5) to P total for any time during this reaction. Consider gas kinetics. My teacher says the ...
Monday, July 7, 2008 at 3:24am by guy

Chemistry
For the reaction given, the value of the equilibrium of the constant at 400 K is 7.0. Br2(g)+ Cl2(g)=2BrCl(g) Does the: Reaction proceed to the left? Reaction proceed to the right? Partial pressure represent a system in an equation?
Friday, February 21, 2014 at 10:44am by Andy

Chemistry
I would really like to understand how to do these problems, because my exam is coming up in a few weeks. I still cannot comprehend how you can tell if a system is is positive or negative according to reaction. For #1, I presume it is E if it is spontaneous at all temperatures...
Thursday, March 27, 2014 at 1:58am by Rainie

Chemistry
I would really like to understand how to do these problems, because my exam is coming up in a few weeks. I still cannot comprehend how you can tell if a system is is positive or negative according to reaction. For #1, I presume it is E if it is spontaneous at all temperatures...
Friday, March 28, 2014 at 1:18am by Rainie

Chem
Variation of the rate constant with temperature for the first-order reaction 2N2O5(g)  2N2O5(g) + O2(g) Is given in the following table. Determine graphically the activation energy for the reaction. T(K) k(s^-1) 2981.74 x 10^-5 308 6.61 x 10^-5 318 2.51 x 10^-4 328 7....
Saturday, July 17, 2010 at 3:35pm by Paul

chemistry
Use the standard reaction enthalpies given below to determine ΔHrxn for the following reaction: 2 NO(g) + O2(g) → 2 NO2(g), ΔHrxn = ? Given: N2(g) + O2(g) → 2 NO(g), ΔHrxn = +183 kJ 1/2 N2(g) + O2(g) → NO2(g), ΔHrxn = +33 kJ
Tuesday, June 14, 2011 at 10:37pm by Amber

Chemistry
For a given reaction 2A + B --> C, if the concentration of A doubles then the reaction rate doubles. If the concentration of both A and B doubles then the reaction rate increases by factor of 8. What is the order of the reaction with respect to B?
Saturday, October 2, 2010 at 3:44pm by Anonymous

science(chem)
How many mg of fluorenone can 0.53mol of sodium borohyride(NaBH4) reduce? ~I don't know how to get this..wouldn't I have to have a reaction equation given to me?? Well I didn't have one for the question given to me so I don't know what to do. I tried looking for the reaction ...
Sunday, October 7, 2007 at 10:07pm by ~christina~

Chemistry
Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 C, Kp = __________. H2 (g) + Br2 (g) ↔ 2 HBr (g)
Saturday, November 17, 2012 at 1:02am by Josh G.

College Chemistry
a)What is the theoretical yield for this reaction under the given conditions? b)What is the percent yield for this reaction under the given conditions? 1.41gH2 is allowed to react with 10.4gN2,producing 2.46gNH3
Saturday, September 18, 2010 at 8:37pm by Alex

Chemistry
A chemist does a reaction rate analysis on the following reaction: 2CO (g) + O2 (g) → 2CO2 (g) She collects the following data: Trial Initial Concentration of CO (M) Initial Concentration of O2 (M) Instantaneous Reaction Rate (M/s) 1 0.150 0.150 0.113 2 0.300 0.150 0.226...
Thursday, June 30, 2011 at 11:11pm by Violet

college chemistry
a) Is the reaction shown below spontaneous under standard conditions at 25⁰C? CH3OH (g) ----> CO (g) + 2H2 (g) b) Will this reaction be spontaneous at 25⁰C given the following amounts of materials? CH3OH at 1.20 atm CO at 0.080 atm H2 at 0.020 atm
Wednesday, April 28, 2010 at 1:04pm by Stephanie

Organic Chemistry
The Diels-Alder reaction is classified as a: A. polar reaction B. radical reaction C. substitution reaction D. pericyclic reaction E. rearrangement reaction
Friday, March 6, 2009 at 5:19am by nilee

Chemistry
In a reaction in which A + B yields AB, the reaction is referred to as a _________. A. decomposition reaction B. double-replacement reaction C. combustion reaction D. composition reaction
Friday, September 17, 2010 at 9:43am by Jason

Chemistry...HELP!!!!
In a reaction in which A + B yields AB, the reaction is referred to as a _________. A. decomposition reaction B. double-replacement reaction C. combustion reaction D. composition reaction i think is a
Friday, September 17, 2010 at 10:11am by Jason

Chemistry
Reaction Mechanism Formation of hydrogen bromide takes place as: H2 + Br 2<- 2HBr -> If the chemical reaction has occured by a mechanism that involves more than one step. What is the reaction occurs by the given mechanism?
Friday, September 3, 2010 at 10:41am by prethy

Chemistry
1.29g H2 is allowed to react with 10.3g N2 , producing 1.86g NH3. What is the theoretical yield for this reaction under the given conditions? What is the percent yield for this reaction under the given conditions? I have been stucks for days now.
Tuesday, February 7, 2012 at 2:36pm by ASh

Chemistry
The reaction in the question is the reverse of the reaction given. That is just 1/Kp or 1/11000 = ??
Thursday, September 24, 2009 at 1:35pm by DrBob222

Calc
The temperature of a chemical reaction, t seconds after the reaction starts, is given by: T(t)= 20+5.25t^.75 degrees F , What is the average temperature during the whole process, if the reaction lasts for 4 minutes and 16 seconds ?
Sunday, February 9, 2014 at 7:35pm by Rebekah

Chemistry
Which of the following is the best definition of Hess' Law? A. Heat is always released by the decomposition of 1 mole of a compound into its constitute elements. B. The enthalpy of a process is the difference between the enthalpy of the products and the enthalpy of the ...
Wednesday, February 20, 2008 at 1:49pm by Anonymous

chemistry
Which of the following can we predict from an equilibrium constant for a reaction? 1 The extent of a reaction 2 Whether the reaction is fast or slow 3 Whether a reaction is exothermic or endothermic a. 1 only b. 2 only c. 3 only d. 1 and 2 only e. 1 and 3 only
Friday, May 14, 2010 at 3:38am by Aungsan

Chemistry
What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32-
Friday, November 11, 2011 at 12:57pm by Monique

College Chemistry
The maximum amount of product D that can be produced from the following reaction is 55.75 g. 2A + B 2C + 3D Following an experiment based on this reaction, when the D was isolated, 50.67 g of D were obtained. What is the percent yield for this particular experiment?
Monday, March 26, 2012 at 9:22pm by Lisa

Chemistry
Calculate ∆H˚ for the following reaction using the given bond dissociation energies. CH4 (g) + 2O2 (g) --> CO2 (g) + 2H2O (g) Bond.......∆H˚ (kJ/mol) O-O........142 H-O.........459 C-H.........411 C=O........799 O=O........498 C-O.........358 ∆H...
Wednesday, November 9, 2011 at 3:09am by Raj

Chemistry
1) The rate expression for the reaction 2 SO2 + O --> 2 SO3 is given by rate = k [SO2]2[O2]. The overall order of this reaction is: first order 2)The rate reaction between A and B is expressed as rate = k [A][B]. To produce the greatest increase in the reaction rate: double...
Sunday, December 23, 2007 at 8:42am by Anonymous

chemistry, chemical kinetics
I keep getting these questions wrong, could someone please help. Thanks so much. Question 1 For the following overall reaction, the rate constant is 3.4x10^-2. A(g)+ 2B -> 2C + D What may be the rate reaction? Question 2 The rate law for this reaction is R=k[NO][Cl2] ...
Friday, July 2, 2010 at 8:33pm by student

CHEMISTRY
1. Consider the following reaction: Pb(NO3)2+KI--> Pbl2 +KNO3 in theis experiment, 12.0g of Kl is reacted with 20.5g of Pb(NO3)2. a) write a balanced equation for this reaction. b)identify the limiting reaction. c)calculate the mass of KNO3 produced from this reaction.
Thursday, June 6, 2013 at 11:44am by irfan

Chemistry
How many liters of Chlorine at STP will react with 35L of 02 at STP given the following reaction? 2Cl2(g) + 7O2(g) - 2Cl2O7(l)
Wednesday, May 4, 2011 at 11:03am by Nan

Chem, HELP plz
Complete and balance the following reaction, given that elemental rubidium reacts with elemental sulfur to form Rb2S?
Tuesday, May 29, 2012 at 4:48pm by Lily

chemistry
Given one of the starting materials and end product for each of the following reactions, show all reactants, reaction conditions in brackets (where known) and products. fluoroethane from ethanol
Saturday, April 26, 2008 at 6:34pm by Manny

chemistry
Given one of the starting materials and end product for each of the following reactions, show all reactants, reaction conditions in brackets (where known) and products. fluoroethane from ethanol
Tuesday, April 29, 2008 at 4:25pm by Manny

chemistry
For the following: a)give the reaction type; b)complete and balance the reaction; c)using your answer to part b, determine how much of the other reactant is needed, and how much of each product will be formed, for the given starting amount (below); and d) calculate the percent...
Monday, February 18, 2008 at 8:51am by stephen

chemistry
Consider the following reaction: 2HBr(g)---> H_2(g) + Br_2(g) B)In the first 15.0s of this reaction, the concentration of HBr dropped from 0.510M to 0.455M. Calculate the average rate of the reaction in this time interval. C)If the volume of the reaction vessel in part (b) ...
Wednesday, September 24, 2008 at 11:20pm by Erin

Chemistry
The following table contains data for the equilibrium reaction CH3COOH(g)+ C2H5OH(g)↔ CH3COOC2H5(g)+ H2O(g) T = 100oC. Each row in the table represents a different experiment (diffferent intial concentrations). Initial concentration Equilibrium concentration...
Thursday, September 24, 2009 at 1:29pm by Ava

chemistry
Given the reaction 1/2 N2( g) + 3/2 H2 (g) ___> NH3 (g) +11.0kcal.Is this reaction exothermic or endothermic?
Sunday, April 8, 2012 at 2:34pm by faisal

chem
Please calculate the energy involved in the following chemical reaction, given the values below: 2Ag + H2S --> Ag2S + H2 -24 -33
Sunday, March 2, 2014 at 8:59pm by lost girl

chem
Please calculate the energy involved in the following chemical reaction, given the values below: 2Ag + H2S --> Ag2S + H2 -24 -33
Sunday, March 2, 2014 at 9:14pm by lost girl

Chemistry
Given the following hypothetical equations, 2A + B → 3C + 2D ΔH = -46.7kJ C → B ΔH = 13.1kJ 2E → B ΔH = 84.5kJ, what is the enthalpy change (kJ) for the following reaction? A → D + 2E
Wednesday, March 7, 2012 at 9:21pm by John

Chemistry
For a certain chemical reaction, ΔH∘=−156kJ. Assuming the reaction is at equilibrium, classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.
Thursday, February 5, 2009 at 4:49pm by Anonymous

Chemistry
I don't understand the question. 1.50M HCl = 1.5 moles/L of solution. The volumes are depended upon the reaction and you have given no reaction.
Tuesday, April 5, 2011 at 1:14pm by DrBob222

Chem
3. Chalcocite is an ore from which copper can be extracted for commercial use. The formula for this important ore is Cu2S. In the laboratory it is formed by the following reaction: 2Cu + S Cu2S The reaction takes place in laboratory conditions that allow the reactant atoms ...
Tuesday, April 24, 2012 at 9:54am by Anonymous

Chemistry Question
The reaction of quicklime (CaO) with sulfur dioxide (SO2) is an important reaction for reducing SO2 emissions from coal-fired power plants: CaO(s) + SO2(g) → CaSO3(s) This reaction is an example of: A. a precipitation reaction B. an electrolysis reaction C. a combustion ...
Thursday, March 29, 2012 at 6:16pm by M

chemistry
how much calcium oxide is recovered when 250 g calcium hydroxide are heated given the following reaction? Ca(OH)2 arrow CaO + H2O
Monday, April 11, 2011 at 7:14pm by cam

chemistry 102
The following decomposition reaction SO2Cl2-->SO2 + Cl2 was run in a laboratory. Following data collected: Time(s) Pressure SO2Cl2 (ATM) 0 1 2500 .947 5000 .895 7500 . 848 10000 .803 What is the overall order of reaction?
Saturday, September 17, 2011 at 9:53pm by vika

chemistry
Consider the following reaction: Na2CO3 + NiCl2 NiCO3 + 2NaCl Using the solubility rules determine the solubility of all reactants and products. Explain your answer Please. Which product is the precipitate in this reaction? Write the complete ionic equation for this ...
Saturday, February 23, 2013 at 7:17pm by Eagertolearn

Chemistry
In a given 1st order reaction A ---> products, the initial concentration of A is 0.40 M. What will be the concentration of A after 15 seconds if the half-life of the reaction is 3 seconds? I found the concentration to be 1.25 x 10-2 M But then how do I find the rate ...
Monday, February 18, 2013 at 7:37am by Marcus

Chemistry
Given the balanced equation representing a reaction: 2CO(g)+O2(g)-->2CO2(g) what is the mole ration of CO(g) to CO2(g)in this reaction? (1)1:1 (2)1:2 (3)2:1 (4)3:2
Sunday, January 2, 2011 at 8:40pm by lisa fortuna

chemistry
The following reaction is a single-step, bimolecular reaction: CH3Br + NaOH --> CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.135 M, the rate of the reaction is 0.0070 M/s. (a) What is the rate of the reaction if the concentration of CH3Br is doubled? (b...
Saturday, March 24, 2012 at 2:18pm by katie

chemistry
Given the following reaction and enthalpy change, calculate the amount of heat for converting 100.4g of liquid water (18.02g/mole) to a vapor? delta H= +44kJ
Thursday, November 3, 2011 at 12:30pm by Teresa

Concentration and Reaction
The rate of the following reaction: Radioactive decay of 90Sr, is characterized by the rate constant k = 0.024 year-1. What is the half-life (in years) for this reaction at the same conditions when the initial concentrations are 0.0356 M? (Round your answer to 3 significant ...
Saturday, November 20, 2010 at 10:36pm by Confused

science
Consider the following reaction: CH3X + Y --> CH3Y + X At 25C, the following two experiments were run, yielding the following data: Experiment 1: [Y]0 = 3.0 M [CH3X] Time (hr) 7.08 x 10-3 M 1.0 4.52 x 10-3 M 1.5 2.23 x 10-3 M 2.3 4.76 x 10-4 M 4.0 8.44 x 10-5 M 5.7 2.75 x ...
Monday, February 20, 2012 at 10:19pm by Mariel

Chemistry
Which of the following is the best definition of Hess' Law? A. Heat evolved in a given process can be expressed as the sum of the heats of several processes that, when added, yield the process of interest. B. The enthalpy of a process is the difference between the enthalpy of ...
Monday, May 7, 2007 at 12:45am by Jared

HARD CHEM QUESTION
A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) <-->2H2(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: the reaction quotient initially.
Sunday, April 21, 2013 at 7:35pm by scilover

chemistry
One thing that you should note quickly is that the equilibrium constant expression depends on how we write the chemical reaction. For example, consider the following reaction N2O5(g) < - > 2NO2(g) + 1/2O2(g) K = [NO2]2[O2]1/2/[N2O5] However, we can just as easily ...
Sunday, July 22, 2012 at 7:14pm by bobpursley

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