Wednesday
December 17, 2014

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

Number of results: 37,816

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
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
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

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

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

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

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
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

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

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

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

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

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

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

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
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

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

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
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
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

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

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

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
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

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

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
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

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

Chemistry
Natural gas is almost entirely methane, CH4. What volume of natural gas at 20 C and 1.00 atm pressure is required to heat one quart of water from 20 C to 100 C? The density of methane at 20 C is 0.665 g/mL. The reaction for the combustion of methane is CH4 (g) + 2 O2 (g) -->...
March 18, 2014 by Anonymous

chemistry
Nitroglycerine decomposes according the the equation: 4C3H5(NO3)3 -> 12 CO2 + 10 H2O +6N2 + O2. 15.0 g of nitroglycerine is placed in a 500 ml flask at 25.0 C. The vapor pressure of water at this temperature is 23.8 mmhg. Find the total pressure in the flask after the ...
March 15, 2010 by Ben

Chemistry 30
Consider the following reaction at equilibrium: 4NH3(g) + 5O2(g) ↔ 4NO(g) + 6H2O(g) In what direction will the following changes force the reaction? a) Addition of O2 b) Reduction of the amount of water vapour c) Increase in the pressure d) Decrease in the volume e) If ...
September 30, 2014 by Ade

Physics
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 7.6% and the body increases blood pressure to maintain a constant flow. Calculate the needed percent increase in pressure.
March 17, 2014 by Paul

Chemistry - Science (Dr. Bob222)
The following reaction has a positive value of ΔG. 2H2O(g) → 2H2(g) + O2(g) Which of the following statements must be true? A. The reaction is slow. B. The reaction will not occur. That is, when H2O(g) is introduced into a flask, no O2 or H2 will form even over a ...
May 7, 2014 by Ana

Chemistry 152
For which of the following processes would the entropy change be positive? Choose one answer. a. Hg(l)(45C)----- Hg(l)(25C) b. H2O(l----H2O(s) c. He (g) (1 atm)------- He(g)(10 atm) d. I2(s)------I2(aq) e. Ag+ (aq) +Br-(aq)------AgBr(s) I figure that it wasnt A or B but the ...
July 3, 2010 by Car

chem
Complete the reaction? IF no reaction say so H2O C4H6O3 ====> H2O c) Cu ===== > H2O d) K2O=====> e) 2 NaNO3 + ht →
October 31, 2010 by dan

chemistry
Under an O2(g) pressure of 1.00 atm, 30.9 cm3 of O2(g)at 25C dissolves in 1.00 L H2O at 25C. Assuming that the soln volume remains at 1.00L, what is the Molarity of a saturated O2(aq) soln at 25C when partial pressure O2=1 atm? DRBOB222 said to: Convert 30.9 cc O2 at 25C to ...
August 31, 2011 by Holly

Chemistry
A reaction mixture of 4.0 mL of 0.002 M SCN- and 5.0 mL of 0.002 M Fe3+ is diluted to 10.0 mL with 0.1 M HNO3 to form the blood-red FeNCS2+ complex. The equilibrium molar concentration of the FeNCS2+ determined from a standardization curve is 1.5x10^-4 mol/L. Calculate, in ...
March 18, 2013 by Anonymous

chem
a 13.5L tank is filled with H2 to a pressure of 2x10^2atm. How many balloons (each 2L) can be inflated to a pressure of 1 atm from teh tank?assume there is no temp change and tank cant be emptied below 1 atm of pressure
November 16, 2007 by mel

chemistry
Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C A 0.463 mol sample of PCl5(g) is injected into an empty 4.80 L reaction vessel held at 250 C. Calculate the concentrations of PCl5(g) and PCl3(g...
March 9, 2012 by Sarah

Levy
Given the following data: MnO(s) + H2(g) Mn(s) + H2O(l), H = 100 kJ MnO2(s) + 2 H2(g) Mn(s) + 2 H2O(l), H = –52 kJ use Hess's law to calculate the heat of the reaction MnO2(s) + H2(g) MnO(s) + H2O(l)
January 11, 2012 by Ari

Chemistry
Predict the product(s) for the following reaction: H2SO4(aq) + KOH(aq) --> Choose one answer. a. K(s) + H2(g) + SO3(g) b. K2SO4(aq) + H2O(l) c. No reaction occurs d. K2S(aq) + H2O(l) e. KSO4(aq) + H2O(l) I keep getting: K2SO4(aq) + 2H2O(l) which isn't at answer. Is this ...
July 24, 2011 by Toby

AP CHEMISTRY
An experiment was carried out to determine the value of the equilibrium constant Kc for the reaction. Total moles of Ag+ present = 3.6 x 10-3 moles Total moles of NH3 present = 6.9 x 10-3 moles Measured concentration of Ag(NH3)2+ at equilibrium= 3.4* 10-2 M Total solution ...
March 12, 2012 by Jamba

chem
The equilibrium constant Kc equals 5.90 for the reaction CH3COOH + C2H5OH <==> CH3COOC2H5 + H2O Find the molar concentrations of acetic acid, ethanol, ethyl acetate, and water at equilibrium when .10 M acetic acid and .20 M ethanol are allowed to equilibrate. I started ...
April 16, 2007 by JP

Chmistry
28.31 mL of O2(g) at 1.00 atm pressure dissolve in 1.00 L of water at 25.0 C. If the pressure of O2(g) is raised to 3.86 atm what will the new concentration of oxygen be expressed in mol/L
December 1, 2012 by Anonymous

chemistry
If methane at a pressure of 3.2 atm and at 21 C is introduced into a container, the gas be heated to ______C to increase the pressure to 12 atm.
March 5, 2013 by kelvin

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?
October 28, 2009 by Mandy

Chemistry
When CH4(g) (0.06318 mol/L) and 16.43 mol of H2S(g) in a 130.0 L reaction vessel at 711.0 C are allowed to come to equilibrium the mixture contains 0.04107 mol/L of CS2(g). What is the equilibrium concentration (mol/L) of H2S(g)? CH4(g)+2H2S(g) = CS2(g)+4H2(g)
October 4, 2013 by plzprovidetheanswer

chem
Consider the following unbalanced equation: C2H5OH(g) + O2(g) → CO2(g) + H2O(l) 1.55 g of ethanol reacts with 10.0 g of oxygen. What is the total volume of gas present (in L) after the reaction is complete, assuming the reaction takes place at 1.00 atm and 25oC? A) 0.572...
December 15, 2010 by Bogdanam

Chemistry
The equilibrium constant Kc for the following reaction is equal to 0.20 at 250C. Calculate the equilibrium constant Kp for the reverse reaction at the same temperature. COCl2 (g) = CO (g) + Cl2 (g) I'm sorry.. English is a second language for me. After solving for K'c and ...
March 15, 2012 by David

chemistry
If methane at a pressure of 3.2 atm and at 21 C is introduced into a container, the gas be heated to ______C to increase the pressure to 12 atm. is it 352???
March 5, 2013 by kelvin

Chemistry
15.0 moles of gas are in a 6.00L tank at 298.15K. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300 L^2*atm/mol^2 and b=0.0430 L/mol. I found the idea gas pressure to be 61.2 atm by...
September 13, 2012 by Lori

Chemistry
A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?
November 30, 2010 by Kiesha

Chemistry
A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?
December 6, 2010 by Ivy

Thermal Physics, Kinetic Theory of Gases
Oxygen (O2) has a molar mass of 32 g/mol. (e) Suppose an oxygen molecule traveling at this speed bounces back and forth between opposite sides of a cubical vessel 0.10 m on a side. Find the average force it exerts on one of the walls of the container. (Assume that the molecule...
November 1, 2012 by Help!!

Chemistry
Calculate the final pressure on the addition of 2.0 g He(g) to a vessel of 10.0 L fixed volume already containing O2(g) at 25C and 740 mm Hg
May 29, 2012 by Kelly

chemistry
For the following reaction at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.261 mol of F2 is added to this equilibrium mixture, calculate the concentrations of ...
November 13, 2009 by Meghan

Chemistry
For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.340 mol of F2 is added to this equilibrium mixture, calculate the concentrations of all ...
February 20, 2012 by Elizabeth

Chemistry
For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g +  it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this equilibrium mixture, calculate...
April 3, 2013 by Jerry

chemistry
For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 4.87-L rigid container are [H2] = 0.0496 M [F2] = 0.0116 M [HF] = 0.429 M. H2(g) + F2(g) <==> 2 HF(g) If 0.185 mol of F2 is added to this equilibrium mixture, calculate ...
November 8, 2013 by Anonymous

chemistry
what is the solubility of N2 at a pressure of 10 atm? partial pressure at 1 atm=0.78 atm solubility at 1 atm= 5.3 x 10^-3 mol/L
August 25, 2014 by jojo

chemistry
A sample of gas occupies 29 L under a pressure of 1.3 atm. What would the resulting volume be if the pressure were increased to 3.9 atm if the temprature did not change?
April 15, 2008 by riya

CHEM
a cyinder with a volume of 5.37 liters contains N2 at a pressure of 2.82 atm at 26 celcius. how many grams Ne must be added to raise the total pressure to 7.5 atm
November 20, 2010 by MAX

chemristy
A sample of gas occupies 18 L under a pressure of 1.3 atm. What would the resulting valume be if the pressure were increased to 3.9 atm if the temperature did not change?
November 22, 2010 by kevin bolton

Chemistry 3A
a sample of nitrogen gas, N2 occupies 3.0L at a pressure of 3.0 atm. what volume will it occupy when the pressure is changed to 0.50 atm and the temperature remains constant?
December 3, 2012 by Gurjot

Chemistry
A gas sample containing only SO2, PF3 and SF6 has the following mass percent composition: 30.4% SO2 and 28.4% PF3. Calculate the partial pressure (atm) of SO2 if the total pressure of the sample is 676.4 torr. I tried taking the total pressure in atm and multiplying it with ...
April 4, 2010 by Luc

Chemistry!! Help
Consider the following equilibrium: N2O4 <=> 2NO2 You may assume that delta H and delta S do not vary with temperature. At what temperature will an equilibrium mixture of 1 atm total pressure contain twice as much NO2 as N2O4?
April 20, 2012 by John

Chem 2
Phosphorus pentachloride decomposes according to the chemical equation PCl5<-->PCl3 +Cl2 A 0.260 mol sample of PCl5(g) is injected into an empty 2.75 L reaction vessel held at 250 C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium. Please help I'm not...
March 31, 2014 by Anonymous!!

Chemistry
Calculate the osmotic pressure of a 6.0 10-2 M solution of NaCl at 20C (293 K). Okay when I set up problem MRT....I get something totally different from the answer 2.9 atm. Could u please show me your set up to get to 2.9 atm? Thanks a billion!!
October 29, 2011 by Chemistry Chick

Chemistry
the total pressure in the vessel is 199kPa. How much pressure does nitrogen exert on helium if it had a pressure of 94 kPa?
October 19, 2010 by Guy

Chemistry
Pure ethanoic acid (25.0cm3, CH3COOH), pure ethanol (35.0 cm3, C2H5OH) and pure water (20.0cm3, H2O) were mixed in a sealed flask at room temperature. The flask was placed in a heated water bath and maintained at 323K until equilibrium was established. CH3COOH(aq) + C2H5OH(aq...
May 1, 2012 by Henry

Chemistry
The ΔHof of gaseous dimethyl ether (CH3OCH3) is 185.4 kJ/mol; the vapour pressure is 1.00 atm at 23.7oC and 0.526 atm at 37.8oC. a) Calculate ΔHovap of dimethyl ether. b) Calculate ΔHof of liquid dimethyl ether Any idead how to calculate for the heat of ...
December 11, 2012 by xavier

Chemistry
3.0 moles each of carbon monoxide, hydrogen, and carbon are placed in a 2.0 liter vessel and allowed to come to equilibrium according to the equation: CO(g)+H2(g)-->C(s)+H20(g) if the equilibrium constant at the temperature of the experiment is 4.0, what is the equilibrium ...
March 9, 2012 by Kelly Hills

Chemistry
Calculate ∆G (in kJ) at 541 K for the following reaction under the given conditions. Use data obtained from the table below and assume that ∆Hfo and So do not vary with temperature. Report your answer to three significant figures in scientific notation (i.e. 1.23E4...
February 17, 2008 by Matt

Chemistry
a) An equilibrium exists between three chemical species in the blood , Hemoglobin, oxygenated hemoglobin and oxygen. Using the symbols Hb for hemoglobin , O2 for oxygen and HbO2 for oxygenated hemoglobin write out the equilibrium reaction. If you have determined if the forward...
November 26, 2011 by AB

Chemistry
CaCO3(s) <--> CaO(s) + CO2 (g) A 5.9-gram sample of CaCO3 (molar mass = 100.) is placed in an evacuated 2.00L container and heated to 200^oC. Equilibrium is reached when 5.15% of the CaCO3 has decomposed. 1)Write the Kp expression for this reaction and calculate its ...
March 3, 2011 by Patrick

Chemistry
Consider the reaction 2 SO2(g) + O2(g) in equilibrium with 2 SO3(g) . At 25C delta H = -197.78 kJ and delta S = -187.95 J/K. Using this information, calculate the equilibrium constant for the reaction at -32C. (R = 8.314 J/K) Enter your answer using TWO significant figures...
November 16, 2014 by Bill

Chemistry
Consider the following equilibrium at 1000K: 2SO2 (g) + O2 (g) 2SO3 (g) A study of this system reveals that there are 3.5E-3 moles of sulfur dioxide gas, and 4.8E-3 moles of oxygen gas present in a 11.0L flask at equilibrium. The equilibrium constant for this reaction is 4....
June 3, 2012 by please help!

Chemistry
A car tyre has a volume of 10 L when inflated. The tyre is inflated to a pressure of 3 atm at 17C with air. Due to driving, the temperature of the tyre increases to 47C. a) what would be the pressure at this temperature? b) how many litres of air measured at 47C and ...
July 7, 2010 by Shoaib

Chemistry
At a certain temperature, the Kp for the decomposition of H2S is 0.774. H2S(g) <---> H2(g)+S(g) Initially, only H2S is present at a pressure of 0.120 atm in a closed container. What is the total pressure in the container at equilibrium?
November 26, 2013 by Jessica

chemistry
If 1.00 mol of iodine and 0.50 mol 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 7, 2008 by Kelsy

Chem
S2 + C ----> CS2 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? Kc= 9.40
February 10, 2014 by Help

Chemistry
Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) <-> PCl3(g)+Cl2(g) Kc=1.80 at 250 degrees Celsius A 0.222 mol sample of PCl5(g) is injected into an empty 3.25 L reaction vessel held at 250 C. Calculate the concentrations of PCl5(g) and ...
March 3, 2013 by J

Chemistry
In a constant-pressure calorimeter, 50.0 mL of 0.300 M Ba(OH)2 was added to 50.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 24.50 degrees C to 28.59 degrees C. If the solution has the same density and specific heat as water, what is ...
February 9, 2012 by Eric

Chemistry
In a constant-pressure calorimeter, 50.0 mL of 0.300 M Ba(OH)2 was added to 50.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 24.50 degrees C to 28.59 degrees C. If the solution has the same density and specific heat as water, what is ...
February 10, 2012 by Eric

science-chemistry
please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the partial pressure of Ar in the flask is 1.00 atm. The temperature is 63.5 degrees C A) Calculate the total pressure in the flask B) calculate the mole...
April 29, 2012 by Bryan

chemistry
Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water according to the following equation: CH4(g)+H2O(g) = CO(g) + 3H2(g) In a particular reaction, 26.5 L of methane gas (measured at a pressure of 736 torr and a temperature of 25 C ) is ...
October 13, 2008 by Lili

chem 2
At a certain temperature, the Kp for the decomposition of H2S is 0.791. H2S<--> H2 + S Initially, only H2S is present at a pressure of 0.111 atm in a closed container. What is the total pressure in the container at equilibrium? Please Help!
March 31, 2014 by Anonymous.

chemistry
Imagine that 25.0 of ice at -3.0C is placed in a container holding water vapor at temperature of 120.0C . After a certain amount of time, the container has expanded slightly, but holds only water vapor at 110.0C. what is the final volume of the container? you may assume the ...
December 5, 2011 by Fajer

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

Search
Members