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July 2, 2015

Search: Calculate the pressure (in atm) of H2O(g) at equilibrium in the reaction vessel

Number of results: 40,308

Chemistry Help Please
Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!
March 16, 2014 by Layla

chemistry
Which of the following statements is not true? 1.Chemical equilibria are examples of reversible processes. 2.When multiple reaction steps are in equilibrium, then the equilibrium constant for the net reaction is the product of the individual reactions. 3.The equilibrium ...
February 25, 2015 by danny

chem
(CH3)N2H2(l) + 2N204(g) = 3N2(g) + 4H2O(l) + 2CO2(g). consider the reaction b2n 150g of liquid (CH3)N2H2 & 80L of N2O4 at 27 degree celcius & a pressure of 2 atm. The gases produced are collected at 27 degree celsius in an evacuated 250L. Calculate: a) Partial pressure of ...
September 8, 2011 by alia

chemistry
A 2.30 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400C. After equilibrium was established, it was found that 20.0 percent of the NOCl had dissociated: 2NOCl(g) 2NO(g) + Cl2(g) Calculate the equilibrium constant Kc for the reaction.
March 17, 2011 by Anonymous

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at 10...
June 1, 2013 by Anony mous

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at 10...
June 1, 2013 by Anony mous

chemistry
A mixture of 3.00 volumes of H2 and 1.00 volume of N2 reacts at 344 C to form ammonia. The equilibrium mixture at 110.0 atm contains 47.00 % NH3 by volume. Calculate Kp for the reaction, assuming that the gases behave ideally.
March 8, 2015 by Anonymous

algebra
the function, p(d) =1 d + ____ 33 gives the pressure, in atmospheres (atm), at an depth d in the sea (d is in feet). Note that p(0)=1 atm, p(33) =2 and so on. find the pressure at 120 feet. The pressure at 120 fee is ____ atm.
September 23, 2009 by spirit73

chem
A 2.5L flask @ 15 degrees C cntains three gases. The partial pressure of N2 is 0.32 atm, and the partial pressure of the other two gases, He and Ne are 0.15 atm and 0.42atm respectivly. What is the total pressure in atm on the 2.5L flask?
April 25, 2011 by ALEX6

Chemistry
The solubility of NH3 in H2O is 518 g/L at a partial pressure of 760.0 torr. a. Calculate the value of the Henry's Law constant for NH3 b. Calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.
December 6, 2011 by JD

Physics
A 2.60-mol sample of oxygen gas is confined to a 5.03-L vessel at a pressure of 7.95 atm. Find the average translational kinetic energy of the oxygen molecules under these conditions.
June 22, 2013 by Josie

physics
The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior pressure and exterior pressure. When the tank is full of oxygen (O2), it contains 10.0 kg of the gas at a gauge pressure of 43.0 atm. Determine the mass of oxygen that has ...
December 13, 2014 by shawn

physics
An unknown liquid fills a square container of sides 10 m. What is the density of a material if the pressure 5 m below the surface is 1.6 atm? Assume g=10 m/s^2 and the pressure at the surface of the liquid is 1 atm. Also assume that 1 atm = 10^5 Pa. (Hint: make sure to use the...
March 25, 2013 by Pri

Chemistry
A student ran the following reaction in the laboratory at 651 K: 2 NH3(g) N2(g) + 3 H2(g) When she introduced 8.75E-2 moles of NH3(g) into a 1.00 Liter container, she found the equilibrium concentration of H2(g) to be 0.119 M. Calculate the equilibrium constant, Kc, she ...
November 19, 2013 by Jessica

Chemistry
A student ran the following reaction in the laboratory at 650 K: H2(g) + I2(g) 2 HI(g) When she introduced 0.204 moles of H2(g) and 0.229 moles of I2(g) into a 1.00 Liter container, she found the equilibrium concentration of I2(g) to be 5.77E-2 M. Calculate the equilibrium ...
November 19, 2013 by Jessica

Chemistry
A 0.960mol quantity of Br2 is added to a 1.00 L reaction vessel that contains 1.23mol of H2 gas at 1000 K. What are the partial pressures of H2, Br2, and HBr at equilibrium? At 1000 K, Kp=2.1106 and ΔH∘ = -101.7 kJ for the reaction H2(g)+Br2(g)⇌2HBr(g).
February 3, 2014 by Myles Tan

Chemistry
the solubility of argon in water at 25 degrees celcius is 0.0150M. what is the henry's law constant of Ar if the partial pressure of argon is 0.00934 atm. A)0.000140 M/atm B)0.623 M/ atm C)1.61 M/atm D) 4.10 M/atm K=Pgas/Cgas Post your work if you get stuck.
April 27, 2007 by natali

Chemistry
How many grams of CS2(g) can be prepared by heating 12.9 moles of S2(g) with excess carbon in a 7.00 L reaction vessel held at 900 K until equilibrium is attained? Stoichiometry is 1 to 1
February 21, 2013 by Moni

Chem
How many grams of CS2 can be prepared by heating 11.0 moles of S2 with excess carbon in 5.20 L reaction vessel held at 900 kelvin until equilibrium is attained?
February 9, 2014 by Mer

Chemistry
Magnesia (MgO) is used for fire brick, crucibles, and furnace linings because of its high melting point. It is produced by decomposing magnesite (MgCO3) at around 1200 oC. 1. Calculate the equilibrium pressure of CO2(g) (in atmospheres) above MgCO3(s) at 298 K. 2. Calculate ...
April 6, 2007 by Kegahn

CHEM!
A gas mixture contains 0.60 mol of N2, 0.10 mol of H2, 0.20 mol of CH4. Calculate the pressure of the gas mixture and the partial pressure of each constituent gas if the mixture is in a 6.0 L vessel at 27C. What is the: Total pressure Pressure of H2 Pressure of N2 Pressure of ...
October 29, 2012 by David

chemisrty
Q6) A 10 L container contains a mixture of 0.8 g of He and 8 g of Ar at 0 oC. a) (1 pt) Calculate the total pressure of the gas mixture. b) (1 pt) Calculate the partial pressure of each gas in the gas mixture. c) (1 pt) If the initial total pressure of the container was 1.5 ...
January 21, 2012 by lyan

Analytical Chemistry
When BaCl2-H2O (s) is dried in an oven, it loses gaseious water: BaCl2-H2O <--> BaCl2(s) + H2O (g) enthalpy change - 63.11 kJ/mol at 25 degrees C entropy change - +148 J/(K-mol) at 25 degrees C Calculate the vapor pressure of gaseous H2O above BaCl2-H2O at 298K.
October 25, 2010 by Tammy

Chem Check Please!!!
Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!
March 16, 2014 by Layla

thermodynamic
A rigid vessel of 1m^3 contains steam at 20 bar and 400 degree C. the vessel is cooled until the steam is just dry saturated. Calculate the mass of steam in the vessel.
July 17, 2011 by Amber

science
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
January 12, 2013 by harry

Chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
January 12, 2013 by Ankur

chem
a) Calculate the pressure exerted by 0.5160 mol N2 in a 1.0000 L container at 24.6C using the ideal gas law. atm (b) Calculate the pressure exerted by 0.5160 mol N2 in a 1.0000 L container at 24.6C using the van der Waals equation. atm (c) Compare the results. (Write the ...
November 17, 2007 by mel

chemistry
When CO(g) (38.11 grams) and 96.48 grams of Cl2(g) in a 140.0 L reaction vessel at 782.0 K are allowed to come to equilibrium the mixture contains 0.4080 mol of Cl2CO(g). What is the equilibrium concentration (mol/L) of CO(g)? CO(g)+Cl2(g) = Cl2CO(g) Can anyone help with the ...
April 14, 2010 by andy

Chemistry
At the start of the reaction there are 0.714 mole of H2, 0.984 mole of I2, and 0.886 mole of HI in a 2.70 L reaction chamber. Calculate the concentrations of the gases at equilibrium. The equilibrium constant is 54.3.
February 23, 2013 by Amy

Chemistry
I need to calculate the mass of CO2 produced in the reaction of NaHCO3 + HCl Data Mass of NaHCO3 = .05g Mass of system before reaction 117.9 g Mass of system after reaction 117l98 Maxium pressure 1.4094 initial pressure 1.0094 pressure change .4 temp 299.2K
June 24, 2014 by Sarah

Chemistry
In a constant-pressure calorimeter, 60.0 mL of 0.330 M Ba(OH)2 was added to 60.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 21.71 °C to 26.21 °C. If the solution has the same density and specific heat as water, what is ΔH for this ...
February 10, 2012 by Heather

chemistry
The equilibrium constant of the reaction CH3COOH (l)+C2H5OH (l)=CH3COOC2H5+H2O is 4.if one mole of each of acetic acid and ethyl alcohol are heated in presence of little concentrated H2SO4 at equilibrium the amount of ester present is?
July 7, 2014 by karan

chemistry
The equilibrium constant of the reaction CH3COOH (l)+C2H5OH (l)=CH3COOC2H5+H2O is 4.if one mole of each of acetic acid and ethyl alcohol are heated in presence of little concentrated H2SO4 at equilibrium the amount of ester present is?
July 7, 2014 by karan

Chemistry
X2 + Y2 <=> 2XY 0.50 mole each of X2 and Y2 are placed in a 1.0 litre vessel and allowed to reach equilibrium at a given temperature. The equilibrium concentrations of XY is found to be 0.025 mol/L. What is the equilibrium cosntant for this reaction? Do I just get the ...
May 15, 2007 by Janna

Chemistry
A baker uses sodium hydrogen carbonate as the leavening agent in a banana nut quickbread. the baking soda decomposes according to two possible reactions. 1. 2 NaHCO3 = Na2CO3+H2O+CO2 2. NaHCO3+H=H2O+CO2+Na. calculate the volume in mL of CO2 that forms at 180 degrees C and .975...
October 7, 2010 by Stacey

chemistry
Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide: NH4I(s) ↔ NH3(g) + HI(g) At 400C, Kp = 0.215. If 150 g of ammonium iodide is placed into a 3.00-L vessel and heated to 400C, calculate the partial pressure of ammonia when equilibrium is reached ...
March 22, 2011 by Jason

chem. question?+asap!!!!!
For the reaction, state if the reaction is quantitative, or, if not, state whether products or reactants are favoured at equilibrium. 1. 100 mL of 0.1 mol/L nitric acid reacts with 100 mL of 0.1 mol/L ammonium hydrogen carbonate My question is how do I know if it is quantitive...
June 17, 2006 by say what?

AP Chemistry
A 1.2M NaOCl solution is prepared by dissolving solid NaOCL in distilled water at 298K. The hydrolysis reaction OCl-(aq) + H2O(l) --> HOCl(aq) + OH-(aq) occurs. a. Calculate the value of the equilibrium constant at 298K for the hydrolysis reaction. b. Calculate the value of...
February 17, 2010 by Anonymous

chemistry
The density of acetone vapor in equilibrium with liquid acetone, (CH3)2CO, at 33.1C is 0.832 g L?1. What is the vapor pressure of acetone at 33.1C, expressed in kilopascals? agian i am confused with formulae, hoe you can helpm thanks! change 0.832 g to mols. Use PV = nRT P ...
November 29, 2006 by tyler

Chemistry
1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr. 2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr and occupies a volume of 4.42 L. a)Use Boyle...
November 2, 2009 by Emory

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
January 12, 2013 by Anonychem

chem
if S8 has a partial pressure of .25 atm an decomposes to 4S2, is it the same partial pressure? (In case this is relevant, temp is 1325K ata an initial pressure of 1.00 atm and both are gas)
December 3, 2007 by kitty

chemistry - equilibrium Help
you observed that very little corrosion occurred on the nail immersed in NaOH(aq) solution. This observation is difficult to explain from an electrochemistry perspective since electrochemistry principles predict a spontaneous reaction that should cause corrosion. Explain why ...
November 12, 2012 by Tara

chemistry URGENT
What is the total gas pressure in a sealed flask that contains oxygen at a partial pressure of 0.39 atm and water vapor at a partial pressure of 0.47 atm?
May 4, 2010 by jerkoff

Chemistry
At 2000C, 5.010-3 mol CO2 is introduced into a 1.0 L container and the following reaction comes to equilibrium: 2CO2(g) <-> 2CO(g) + O2(g) Kc = 6.410-7 a. Calculate the equilibrium concentrations of CO and O2. b. What fraction of the CO2 is decomposed at equilibrium...
October 18, 2010 by mg

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at ...
May 31, 2013 by Anonymous

Chemistry
a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at...
June 2, 2013 by Anon

Chemistry
a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at...
June 2, 2013 by Anon

chemistry
If 0.50 mol of iodine and 0.50 mols of chlorine are initially placed into a 2.00-L reaction vessel at 25 Degrees Celsius, find the concentrations of all entities at equilibrium.
April 3, 2008 by John L

Chemistry
Carbon monoxide and molecular oxygen react to form carbon dioxide. A 49.0 L reactor at 200C is charged with 1.14 atm of CO. The gas is then pressurized with O2 to give a total pressure of 3.54 atm. The reactor is sealed, heated to 350C to drive the reaction to completion, ...
December 18, 2014 by Derek F.

chemistry
Calculate the partial pressure of helium in a 1.00 L flask that contains equal numbers of moles of He, Ne, and Ar at a total pressure of 8.35 atm.
May 5, 2013 by Jenny

Chemistry II (College)
How would I go about solving this problem? Can someone show me an equation that can be used? The decomposition of dimethyl ether at 504C is a first-order reaction with a half-life of 27 min. (CH3)2O(g) CH4(g) + H2(g) + CO(g) (a) What will be the partial pressure of (CH3)2O(g...
March 11, 2010 by Tim

Chem II
2.5 mol NOCl(g) was placed in a 2.50 L reaction vessel at 400 degrees C. After equilibrium was established, it was found that 28% of the NOCl had dissociated according to the equation: 2NOCl(g)<-->2NO(g)+Cl2(g) Calculate the equilibrium constant, Kc, for the reaction. ...
January 30, 2007 by Rick

Chemistry
Consider the uni molecular reaction cyclopropane? Propylene. The value of log A for high pressure limit is 15.17. Calculate the value of S? For the reaction. Calculate the contribution of S trans in the above reaction at 298K?
February 28, 2015 by Munavvar

chemistry
Find the a)partial pressure of ethylene oxide and b)the total gas pressure, after 30 hours in a reaction vessel at 415C if the initial pressure of ethylene oxide is 782mmHg. k= 2.05x 10^-4 t(1/2)=56.3 Part A) I converted hours to seconds, and used the formula ln(Pa)t = 108000s...
April 17, 2014 by mae

chem
For the reaction: N2+3H2<--->2NH3 4.000 mol N2, 2.000 mol H2, and 6.000 mol NH3 are placed in a 2.000 L container and allowed to reach equilibrium. When equilibrium is established the [H2]=2.77 M. Calculate the equilibrium concentrations of nitrogen and ammonia. ...
April 19, 2015 by Julia

Math
The function,p(d)=1+ d over 33, give the pressure, in Atmospheres (atm), at a depth (d) in a sea (d is in feet) note that p(0)=1 atm, p(33)=2, and so on, find the pressure at 80 feet. The pressure at 80feet is____atm (type an interger or simplifyed fraction HELP HELP HELP
April 24, 2008 by Kell

chemestry
suppose two gases in a container have a total pressure of 1.20 atm.What is the pressure of gas B if the partical pressure of gas Ais 0.75 atm?
June 12, 2010 by denise

Chem
A vessel of 6.84 L in volume contains 3.61 L of pure water at 25C. A partial pressure of 3.67 atm of CO2 is quickly injected into the space above the water. Calculate the partial pressure of carbon dioxide remaining once the solution has become saturated with the gas. Henry's...
February 4, 2007 by Jill

Chemistry 1202
3CH4(g)->C3H8(g)+2H2(g) Calculate change in G at 298 k if the reaction mixture consists of 41atm of CH4 , 0.010 atm of CH3, and 2.310−2 atm of H2.
November 5, 2012 by BMW

Chemistry
Describe what happens to a co2 sample when the following changes are made: (a) The temperature is increased from -100c to 0c at constant pressure of 2 atm B) The pressure is reduced from 72 atm to 5.0 atm at a constant temperature of 30c C) The pressure is first increased ...
November 9, 2014 by Shemiza

Physical Chemistry
1.6 mol of Neon gas are heated from 20.0 C to 85.2 C at a constant pressure of 1 atm. Calculate the work done. (R = 0.082057 L.atm/ K. mol)
August 8, 2011 by Alfred

physics
2 moles of an ideal gas at 20k changes from a pressure of 15 atm to 3 atm at constant temperature. Calculate the work done by the gas.
March 21, 2012 by frank fred

chemistry
The Henrys Law constant for N2 in water at 30 oC is 6.0 x 10-4 M/atm, calculate the solubility of nitrogen gas in water at a partial pressure of 2.5 atm
February 5, 2015 by S

general chemistry
Consider the following equilibrium: CoCl42-(ac) + 6 H2O (l) = Co(H2O)62+ (ac) + 4 Cl- what effect will adding NaOH have on the equilibrium and on K constant.
June 16, 2010 by Kellsey

chemistry
Welders often use acetylene torches heat up the metal. The reaction is: C2H2(g) + 2.5O2(g) = 2CO2(g) + H2O(g) Calculate the ΔH of reaction for this reaction.
January 31, 2015 by danny 16

Chemistry
Phosphorus pentachloride decomposes according to the chemical equation: PCl5(g)<--> PCl3(g)+Cl2(g) Kc = 1.80 at 250 degrees Celsius A 0.352 mol sample of PCl5(g) is injected into an empty 4.45 L reaction vessel held at 250 C. Calculate the concentrations of PCl5(g) and ...
March 8, 2013 by Laura

Chem, help please
Consider the reaction N2 + 3H2 in equilibrium with 2 NH3 . At 25C Ho = -92.22 kJ and So = -198.53 J/K. Using this information, calculate the equilibrium constant for the reaction at 226C. (R = 8.314 J/K) Enter your answer using TWO significant figures. You may use scientific...
November 19, 2010 by Shayne

Chemsitry II
mole fraction is equal to partial pressure divided by the total pressure Total pressure= sum of partial pressure use PV=nRT where n= number of moles equation become PV/RT=n make sure to convert the temperature to Kelvin and to use 0.0821 for R. V=volume, P=total pressure The ...
May 10, 2007 by Delli

chemistry
Given--The solubility of NH3 in H2O is 518 g/L at a partial pressure of 760.0 torr. Question #1)-- Calculate the value of the Henry's Law constant for NH3. Question #2)-- Calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.
December 6, 2011 by JD

Chemistry
Calculate the change in internal energy at 1 atm & 25C. H2 (g) + 1/2 O2 (g) ---> H2O (l) delta(H)= -286 KJ/mol Okay so i started with the equation: delta(E) = delta(H) - RTdelta(n) P= 1 atm T= 298 K but i dont exactly know what to do from here..please help thank you.
August 27, 2011 by ChemLover

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?
February 21, 2014 by Andy

Science (Chemistry)
A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) <---> 2H(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: (a) the reaction quotient intially (b) the order of concentration of...
May 19, 2015 by Kibito

Chemistry
1. A cylinder of Xenon has a volume of 750. ml. At 25.0C the cylinder has a pressure of 655 torr. How much Argon is present in the cylinder? a. 240. moles b. 0.0264 moles c. .315 moles d. 26.5 moles 2.If a 25 liter cylinder of gaseous ammonia at atmospheric pressure (1.0 atm...
March 4, 2011 by E

Chem
Please tell me if these are right? A mixture of oxygen and helium is prepared for a scuba diver that will descend to 125 feet below the ocean surface. At that depth the diver breathes a gas mixture that has a total pressure of 8atm. If the particle pressure of the oxygen in ...
November 29, 2010 by Lindsay

chemistry
Suppose two gases in a container have a total pressure of 1.20 atm. What is the pressure of gas B if the partial pressure of gas A is 0.75 atm?
February 2, 2011 by Adolph

ap chemistry
A sample of gas in a cylinder of volume 4.2 L at 316 K and 2.68 atm expands to 7.21 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J Path B has two steps. In the first step, the gas is cooled at ...
October 8, 2012 by hanna

Chemistry
Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the equilibrium equation. The acid dissociation constants listed in most standard reference texts for carbonic acid actually apply to dissolved CO2. K=0.032 M/atm...
March 24, 2012 by Jematormal91

Chemistry (Equilibrium)
Consider the following equilibrium system at 900C: H20(g) + CO(g) <==> H2(g) + CO2(g) Initially 5.0 moles of H2O and 4.0 moles of CO were reacted. At equilibrium, it is found that 2.0 moles of H2 are present. How many moles of H2O remain in the mixture? Would be greatly...
November 12, 2014 by Jessica

chemistry
For the following reaction: 2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.
April 15, 2010 by Sue

chemistry
For the following reaction: 2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.
April 15, 2010 by Sue

chemistry
At a certain temperature, the Kp for the decomposition of H2S is 0.734.Initially, only H2S is present at a pressure of 0.102 atm in a closed container. What is the total pressure in the container at equilibrium?
April 24, 2015 by ash

Chemistry
Calculate the percent yield for the reaction if 76.8 g of H2O reacted and 125 g of NO were produced. NO2+H2O->HNO3+NO
July 20, 2013 by Sara

CHEMISTRY
Calculate the change in entropy that occurs when 17.68 g of ice at -12.7C is placed in 54.05 g of water at 100.0C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l) are 37.5 J K-1 mol-1 and 75.3 J K-1 mol-1, respectively, and the ...
October 23, 2012 by Sarah

Chem14
The reaction 2 H2S(g)--> 2 H2(g) + S2(g) has Kp = 2.4 x 10-4 at 1073 K. A reaction mixture contains 0.146 atm of H2, 0.041 atm of S2 and 0.574 atm of H2S. What is the value of Qp?
May 2, 2011 by Ryan

CHEMISTRY
A 1.000 L vessel is filled with 2.000 moles of N2, 1.000 mole of H2, and 2.000 moles of NH3. When the reaction N2(g) + 3 H2(g) ⇀↽ 2 NH3(g) comes to equilibrium, it is observed that the concentration of H2 is 2.53 moles/L. What is the numerical value of the ...
January 11, 2015 by Kira

Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in the tank and the ...
April 18, 2011 by Lindsey

Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in the tank and the ...
April 19, 2011 by Lindsey

CHEMISTRY
4BF3+3H2O=H3BO3+3HBF4 if the reaction vessel contains 0.496 mol BF3 and 5.63g of H2O, which compound is the limiting reactant? how many molesof HBF4 can be produced?
April 19, 2011 by dana

Chem22
Calculate ΔG (in kJ) for the reaction: CO2(g) + CCl4(g) = 2 COCl2(g) at 25oC under the conditions: CO2 = 0.120 atm, CCl4 = 0.162 atm, and COCl2 = 0.856 atm.
May 3, 2011 by Ryan

chemistry 106
Calculate the work done if a gas is compressed from 8.3 L to 3.3 L at constant temperature by a constant pressure of 3.0 atm, and give your answer in units of joules. (1 L atm = 101.3 J)
March 3, 2010 by Tanisha

Science
Stacy has .55kg water sample at 1 atm pressure and 40 degrees celsius. She heats it to 90 degrees Celsius, maintaining constant pressure. How much heat was absorbed by the solution during the course of this operation? (CP of H2O (l) = 4.18 J/g )
December 5, 2012 by Marketa

Chemistry
The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate DEO for the following reaction. H2O (l) → H2 (g) + 1/2 O2 (g)
November 15, 2014 by Mahnoor

Chemistry
The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate ∆E for the following reaction. H2O (l) → H2 (g) + 1/2 O2 (g)
November 15, 2014 by Mahnoor

Chemistry
3NO2 + H2O -> 2HNO3 + NO Calculate the percent yield for the following reaction if 76.8 g of H2O reacted and 125 g of NO were produced.
November 25, 2014 by Amanda

chem
A 1L flask is filled with 1.25 g of argon at 25 degrees celcium. A sample of ethane vapor is added to the same flask until the total pressure is 1.45 atm. What is the partial pressure of argon in the flask? Chemistry - DrBob222, Tuesday, October 5, 2010 at 9:00pm mols Ar = 1....
October 24, 2013 by kris

Chemistry
What mass of H2O is required to form 1.2 L of O2 at a temperature of 310 K and a pressure of 0.950 atm? 2H2O (l) ---> 2H (g) + O2 (g)
November 9, 2010 by Lisa

Chem
Would you please tell me if these are right? A sample of helium has a volume of 325 ml and a pressure of 655 mm hg. What will be the pressure if the helium is compressed to 125 ml (t and n are constant) I got 1703 mm of Hg A 75.0 ml sample of oxygen has a pressure of 1.50 atm...
October 23, 2010 by Jason

Chem
Estimate the equilibrium constant for the weak base (CH3)2NH, if a 1.5910-2 M aqueous solution of (CH3)2NH has a pOH 2.58 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (CH3)2NH + H2O = (CH3)2NH2+ + OH- I know ...
October 22, 2010 by Kyo

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