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August 3, 2015

Search: C6H12O6+CO2=2C2H5OH+2CO2, how many moles of CO2 are produce when .490 mol of C6H12O6 react with this equation

Number of results: 39,745

chemistry
what volume of CO2 would be formed if 84.2 g of calcium carbonate decomposed according to the following equation: CaCO3---> CaO+CO2
April 20, 2010 by kyle

Chemistry
2) What is the empirical formula of a compound containing C, H, O if combustion of 1.23g of the compound yields 1.8g CO2 and .74g of H2O 3) What are the empirical and molecular formulas of a hydrocarbon if combustion of 2.10g of the compound yields 6.59g CO2 and 2.7g H20 and ...
April 10, 2014 by Annabelle

Chemistry
The question representing the production of tetraphosphorus trisulfide (P4S3), a substance used in some match hears, is 8P4 + 3S8 ---> 8P4S3. Determine if each of the following statements is correct. If the statement is incorrect, rewrite it to make it correct. a. To ...
November 14, 2012 by Montanna

chemistry
How do the boiling points of 3.0 m C6H12O6 and 3.0 m CaCl2 compare? A. The boiling point of 3.0 m C6H12O6 is higher. B. The boiling point of 3.0 m CaCl2 is higher. C. They are the same. D. The difference cannot be determined from the information given. I think the answer is D...
September 15, 2011 by jasmine

HELP!! Chemistry
Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102 cm3 solution containing 450.0 g of C6H12O6 ? 3. How many moles of ...
September 26, 2013 by _Unknown

ELAC
Consider equation 3A+B=C+D. You react 4 moles of A with 2 moles of B. Which of the following is true? 1) L.R. is one with higher molar mass 2) A is L.R. because you need 6 moles of A and have only 4 moles 3) B is L.R. because you have fewer moles of B than A 4) B is L.R. ...
September 11, 2010 by Melissa

CHEMISTRY
How many grams of CH4 are required to produce 43 g of Cu according to the following equation: 4CuO + CH4 --> CO2 + 2H20 + 4Cu? I already tried to work the problem myself, and I may have gotten this right, but I do not have an answer key to compare to. #gCH4 = (43gCu) x (1 ...
July 10, 2010 by Casey

Chemistry
Copper is changed to copper(II) ions by nitric acid according to the following equation: 4HNO3 + Cu → Cu(NO3)2 + 2NO2 + 2H2O How many moles of HNO3 must react to produce 0.961 mol of NO2?
February 6, 2015 by Chelsea

chemistry
use the molar volume of a gas to solve the following at STP: a. the number of moles of O2 in 44.8 L O2 gas. b. the number of moles of CO2 in 4.00L CO2 gas. c. the volume(L) of 6.40g O2. d. the volume(mL) occupied by 50.0g neon.
June 27, 2010 by Jetta

Chemistry
Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is released when 12.5g of ethanol burns? C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3H2O(l) Delta H = -1368kJ How do I solve this problem?
May 19, 2010 by Kieth

Chemistry - check answer
A 20.0 L reaction vessel contains 0.016 moles CO2, 1.05 moles of CO, and 2.00 moles of C. The mixture is approaching the following equilibrium: CO2(g) + C(s) <--> 2CO(g) a) Calculate the reaction quotient Q. b) If value of K is 1.17, predict which direction the reaction ...
April 20, 2014 by Amanda

Chemistry
Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the decrease in CO2 partial pressure lowers the...
February 12, 2012 by Hannah

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
The thermal decomposition of calcium carbonate produces 2 by-products, c02 and calcium oxide. calculate the volume of the co2 produced at STP from the decomposition of 231 grams of caco3. i know the equation i need to use is V=nrt/p but am i supposed to convert the grams to ...
February 18, 2010 by Katherine

Chemistry
Based on the following balanced equation: 2 NH3 + 2 O2 -->N2O + 3 H2O a. How many moles of O2 are required to react completely with 6.00 moles of NH3? b. How many grams of O2 are required to react completely with 6.00 moles of NH3? c. How many moles of H2O are produced ...
April 29, 2015 by Anonymous

Honors Chemistry
When 6 grams of acetic acid and 8.4 grams of sodium bicarbonate react, how many moles of CO2 is produced? I don't know how to show the work.
March 4, 2013 by Brandie

chem
Assuming that you have 0.4g of Y(OH)3, calculate the mass of of BaO2 required to react stoichiometrically (1Y:2Ba:3Cu) to produce YBa2Cu3O7. Now calculate the mass of of CuO required to react stoichiometrically (1Y:2Ba:3Cu) to produce YBa2Cu3O7. please help!! .4gY(OH)3> ...
October 26, 2006 by mary

Chemistry( HELP PLEASE, IM DESPERATE!!!)
For the reaction 2CH3OH + 3O2 → 2CO2+ 4H2O, what is the maximum amount of CO2 which could be formed from 13.97 g of CH3OH and 5.45 g of O2? Consider the reaction H3PO4 + 3NaOH → Na3PO4 + 3H2O. How much Na3PO4 can be prepared by the reaction of 3.43 g of H3PO4 with ...
March 11, 2015 by Farrell

Chemistry Please HELP
A 1.082 g sample of a component of the light petroleum distillate called naptha is found to yield 3.317 g CO2 and 1.584 g H2O on complete combustion This particular compound is also found to be an alkane with one methyl group attached to a longer carbon chain and to have a ...
October 23, 2008 by Saira

ap chemistry
Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO + O2 yields 2CO2 Delta H for this reaction is -135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1). 270.5 mol 2). 40.5 mol 3). 12.0 mol 4). 5.41 mol 5). 16.3...
October 18, 2012 by bob

AP Chemistry
Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO(g) + O2(g) --> 2CO2(g) change in H for this reaction is −135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1. 16.3 mol 2. 40.5 mol 3. 12.0 mol 4. 5....
September 29, 2013 by Anonymous

chem question i need help
I need help on this question. Could someone give me tips on how to solve it? thanks An emergency breathing apparatus often placed in mines works via the following chemical reaction: 4KO2(s) + 2CO2(g) to make 2K2CO3(s) + O2(g) If the oxygen supply becomes limited or if the air ...
February 27, 2007 by Jenn

Chemistry
Ok, I'm trying my best here, I'm learning, and I'm thinking I'm on a roll, until I can't get the right answer again..... First.. the butane question Calculate the mass of Butane needed to produce 82.7g Carbon dioxide. 2C4H10 +13 O2--->10H2O +8CO2 Ratio is 2 C4H10 to 8 CO2 ...
March 2, 2015 by Jennie

chemistry
For these problem, I know how to solve it, but I have some issues with the formula. I know that, I need to write down the formula first, and then I need to balance the equation, then I can solve it. So, can anyone please check my formula? You don't have to solve the problem ...
September 10, 2009 by hh

Chemistry``
I answered this question but I did not get the right answer. CO2 + H2 <=> H2O + CO CO2 = 0.5 mole and H2 he 0.5 mole both sollutions were forced into a 1 Litre container. K = 2 what is the equlibrium concentration of each reactant and product. as I calculated I did the ...
May 8, 2007 by Linda

chemistry
Tricky one- my math fails here (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 ...
January 11, 2013 by mangozier

Chemistry
The value of Kc for the reaction below is 1.6 C(s)+CO2(g)=2CO(g) What is the equilibrium concentration of CO when [CO2]=.50M? The usual ICE table doesn't work for me. C(s)+CO2(g)=2CO(g) I - 0 C -x +2x E .50 +2x 1.6=[2x]^(2)/(.50) That's how I did it but the answer is .89 and I...
March 22, 2013 by Ezra

Chemistry
The Henry\'s law constant for CO2(g) in water at 25 C is 29.4 barM1. Estimate the concentration of dissolved CO2(g) in a carbonated soft drink pressurized with 1.95 bar of CO2(g).
July 5, 2013 by Matt

Chemistry
Calculate the number of moles of excess reactant that will be left-over when .350 g if HCN react with .500 g of 02: HCN+O2->N2+CO2+H20
July 20, 2013 by Sara

chemistry
for the reaction of 14.69 g of ethyl alcohol with 22.5 g of oxygen. which is the limiting reagent? how much CO2 will be produced? if 19.5 g of CO2 is actually produced, what is the percent yield? C2H5OH(1) + 3 O2 (g) - 2 CO2 (g) + 3H2O(g)
March 26, 2013 by alex

chemistry
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. After actually running the reaction you determined the percent yield was only 78.5%. How many LITERS of CO2 did you make? (Must put CO2 in answer la
May 30, 2014 by Amy

Chemistry
I need to write a balanced equation for this problem and am having difficulty doing so. The question is this: use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO2 is also a product of ...
February 22, 2009 by Laura

Chemistry
a solution of HCL is approximately 0.1M and has to be standardized . 1.234g Na2CO3 are dissolved to make 100ml of solution. 20mL of this solution are titrated with the HCL solution, requiring 31.3mL for the second equivalence point. what is the exact concentration of the HCL ...
January 14, 2015 by Joshua

Chemistry
Help me set them up and then check my answers? Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102 cm3 solution ...
August 18, 2013 by _Unknown

Chemistry;HELP
Help me set them up and then check my answers? Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102 cm3 solution ...
August 20, 2013 by Unknown

College Chemistry
Calculate the cell potential for the following Galvanic cell: Co(s) Co2+ (0.15 mol L-1, ag)Fe 2+ (0.68 mol L-1, ag)Fe(s) Given that the standard reduction potential Eo for Co2+ is -0.28 V and Eo for Fe2+ is -0.44 V. Anwer is -0.14 V The left side of the above equaton is the ...
October 27, 2010 by Elleni

Chemistry
Given this equation. C3H8 + 5O2 -> CO2 + H2O. How many moles of O2 will be needed to comepletely burn 1.75 moles of propane C3H8?
August 30, 2014 by Pangilinan

chemistry
would it be: O.2576/0.7086=0.3635 0.3635 X 87.65= actual yield? A 2.30-mL sample of methane gas (density 0.112 g/cm3) was completely combusted. If the percent yield of each of the combustion products is 87.65%, calculate the actual yield in grams of carbon dioxide gas. * ...
October 23, 2010 by gary

chemistry
A mixture of CaCO3 and MgCO3 weighing 7.85 g was reacted with excess HCL. The reactions are CaCO3+2HCL=CaCl2+H2O+CO2 and MgCO3+2HCl=MgCl2+H2O+CO2. The sample reacted completely to produce 1.94 L CO2 at 25 degrees C and 785 torr. Calculate the percentage of CaCO3 and MgCO3 in ...
October 17, 2010 by Sue

Chemistry
UMM.. I keep coming up with the wrong answer? How do I calculate this? 1. Calculate the number of Li atoms in 9.9 moles of Li. Express your answer using two significant figures. 2. Calculate the number of CO2 molecules in 3.1310−2 mole of CO2. 3.Calculate the moles of ...
February 27, 2015 by Jennie

chemistry
Help!! Can someone please show me how to set up this problem. I'm lost. C3H8+5O2-->3CO2+4H20 If 19.2g of C3H8 and 19.2g O2 react, how many moles of CO2 can be produced?
November 5, 2010 by josh

Chemistry
CH4(g) + 2O2(g) = CO2(g) + 2H20(g). What volume of O2 is required to react with 2.0 mol CH4 at 50 degrees Celsius and .500 atm?
February 18, 2013 by Maria

Chemistry. What equation do I use?
A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original sample was magnesium...
December 2, 2008 by Sarah

CHEMISTRY HELP!
I am COMPLETELY LOST for this one...dnt even know where to start MOLES 1) Lithium Hydroxide reacts with Carbon Dioxide to form solid Lithium Carbonate and Water. How many grams of carbon dioxide can be absorbed by each 1 gram of lithium hydroxide. 2) Part of the SO2 (sulfur ...
October 31, 2006 by Kim

Chemistry
Based on the balance equation 2C6H14+19O2 gives 12CO2+14H2O calculate the moles of CO2 formed when G moles of H2O formed
February 18, 2008 by Anonymous

CHEM
CaCO3 can be roasted to produce CaO ans CO2 this reaction is carried out in flask connected to an open end Mercury manometer the atmospheric presure in 762tor if the pressure of the CO2 produced is 0.254 determine the total pressure
November 13, 2014 by mow

Physic/Chemistry
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. After actually running the reaction you determined the percent yield was only 78.5%. How many LITERS of CO2 did you make? (Must put CO2 in answer label)
May 20, 2014 by Bree W.

Chemistry
The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the following reaction: MO(s) + CO2(g)  MCO3(s) A 2.85-g sample containing only MgO and CuO is placed in a 3.00-L container. The container is filled with CO2 to a ...
September 30, 2012 by Helga

chemistry
CaCO2--> CaO+CO2 <-- Calculate the pressure of CO2 in an equilibrium process at (a)22 Celsius and (b) 755 Celsius . Assume delta H=177.8KJ/mol and delta S=160.5 J/mol*K for that temeprature range. My question is do I have to subtract the two temperatures since it says "...
March 1, 2009 by Anonymous

Chemistry
The mechanism for the reaction described by NO2(g) + CO(g) ---> CO2(g) + NO (g) is suggested to be (1) 2NO2(g) --->(k1) NO3(g) + NO (g) (2) NO3(g) +CO(g) --->(k2) NO2(g) + CO2(g) Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the ...
April 24, 2014 by Mia

Chemistry
The mechanism for the reaction described by No2+CO--->CO2+NO is suggested to be (1)2NO2--->NO3+NO (2)NO3+CO--->NO2+CO2 Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the production of CO2(g) and enter it in the space below. rate of...
May 23, 2014 by BOB

chemistry
The standard enthalpy of formation at 298k for ccl4,h2o,co2,hcl are -22.5,-57.8,-94.1 and-22.1 kcal/mol.calculate ▲rH FOR reaction ccl4+2h2o→co2+HCL
March 1, 2015 by rakesh dhakal

Chemistry, CO2 aq+H2O->H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
April 14, 2014 by Ramtin

Chemistry, CO2 aq+H2O->H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
April 14, 2014 by Ramtin

Chemistry, CO2 aq+H2O->H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
April 14, 2014 by Ramtin

Chemistry, CO2 aq+H2O->H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
April 14, 2014 by Ramtin

Chemistry, CO2 aq+H2O->H2CO3!
How many grams of CO2 are needed to neutralize a 5 liters water with a pH of 11 to 7? under the following conditions: P: 4000 psi, T:230 oF Note: CO2 is a one of oil reservoir fluid components with mole percent 0f 3.6%. thanks a million
April 14, 2014 by Ramtin

AP CHEM!
IM SO CONFUSED PLEASE HELP! H2 +CO2-->H2O + CO When H2 is mixed with CO2 at 2,000K, equilibrium is achieved according to the equation above. In one experiment, the following equilibrium concentrations were measured. [H2]= 0.20mol/L [CO2]= 0.30mol/L [H2O]=[CO]= 0.55mol/L a/ ...
April 3, 2007 by linds

re-apchem post
a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g) + 2O2(g) --> CO2(g) + 2H20(g) calculate the partial pressure of methane needed to react completely with the O2 in the vessel. What is the total pressure after the reaction is complete if the temperature ...
April 12, 2009 by sarah

Chemistry
1. How many moles of Al(CN)3 are in 199 g of the compound? 2. 96.0 mol of P4O10 contains how many moles of P? 3. If 4.71 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12+8O2 -> 6H20+5CO2 4. How many ...
October 7, 2012 by Anonymous

Chemistry
1. How many moles of Al(CN)3 are in 199 g of the compound? 2. 96.0 mol of P4O10 contains how many moles of P? 3. If 4.71 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12+8O2 -> 6H20+5CO2 4. How many ...
October 8, 2012 by Anonymous

Chemistry with Qualitative Analysis
Help please with Carbon analysis. An air bubble accidentallyy enter the CO2-collection graduated cylinder after the completion of the reaction. How does this error affect the reported moles of CO2(g) collected--too high, too low, or unaffected? Explain.
November 1, 2012 by EJ Nunez

General Chemistry
What volume of oxygen gas at STP is needed to react with 5.06 mol of C2H4, according to the following equation C2H4 + 3O2 ----> 2CO2 + 2H2O
June 20, 2012 by Kim

Chemistry
if you could just help me set them up the would do me some good. Thanx A. In the single reaction of chlorine and potassium bromide, how many grams of potassium chloride can be produced from 200.g each of chlorine and potassium bromide? Identify the limiting reactants. B. In ...
October 29, 2007 by Monte'

chemistry
Q1) 5 liters of Butane gas (C4H10) is reacted with plenty of oxygen at 27 oC and 1 atm to produce carbon dioxide and water vapor. Calculate the following: 1- The volume of CO2 produced at 1 atm and 400 oC. 2- The mass of H2O vapor produced. 3- The mol % of the products. Given...
November 2, 2009 by David

Chemistry
Problem 1: If I have 100 grams of CO2, how many MOLES of CO2 do I have? Problem 2: How many molecules of CO2 are there in this 100 grams?
September 7, 2011 by Meeka

Chemistry
When 2.50 mol of Mg3N2 are allowed to react according to the following equation, how many moles of H2O also react? Mg3N2 + 6H2O ---> 3Mg(OH)2 + 2NH3
August 28, 2008 by Soojung

Chem
Consider the balanced chemical equation: 3Sr(OH)2(aq) + 2H3PO4(aq) → Sr3(PO4)2(s) + 6H2O(l). How many moles of Sr(OH)2 remain if 0.10 mol of H3PO4 react with 0.40 mol of Sr(OH)2?
August 20, 2011 by Mike

Chemistry
I'm using the equation c3H8 + 5O2 yields 3 CO2 + 4H2O + 2220 kJ to figure out how many moles of O2 will be needed to produce 3450 kJ of the above reaction. I know this involves a proportion, but I have no idea what to write. Can you show me this proportion and I'll figure it ...
May 19, 2009 by Tabetha

Chemistry - solubility, not "Methode Champenoise"
Is CO2 soluble in ethanol? I know that CO2 is nonpolar, so that means it's soluble in nonpolar solvents, but CO2 is soluble in H2O. H2O is polar. Also, if CO2 were obeying Henry's Law, would it be soluble in ethanol at a high pressure?
December 11, 2012 by Alex

chemistry
You have 1.600g mixture of NaHCO3 and Na2CO3. You find that 11.60 ml of 2.00M HCl is needed to convert the sample completely to NaCl, H2O and CO2. NaHCO3 (aq) + HCl (aq) -> NaCl (aq) + H2O (l) + CO2 (g) Na2CO3 (aq) +2HCl (aq) -> 2NaCl (aq) + H2) (l) + CO2 (g) What volume...
April 17, 2010 by Monica

chemistry
What mass of CO2, a greenhouse gas, is produced per liter of each fuel (assuming complete combustion) I got this data density of ethanol = 0.785 g/mL density of octane = 0.699 g/mL Ethanol) C2 H5 OH + 2O2 -> 2CO2 + 3H2O delta H combustion ethanol = -1234.8 Kj/mol Octane) ...
October 13, 2011 by sari

Biology
Will O2 passively diffuse and bind with hemoglobin that is less than 1mm from the surface of a blood sample? The percent of hemoglobin bound with O2 is different at high (10% CO2) and low (5% CO2) CO2 concentrations when the Po2 equals 0mmHg. Is that true?
February 23, 2010 by Alex

biology
Will O2 passively diffuse and bind with hemoglobin that is less than 1mm from the surface of a blood sample? The percent of hemoglobin bound with O2 is different at high (10% CO2) and low (5% CO2) CO2 concentrations when the Po2 equals 0mmHg. Is that true?
February 24, 2010 by Alex

chemistry
In which one of the following processes is ΔH = ΔE? a. 2HI(g) → H2(g) + I2(g) at atmospheric pressure. b. Two moles of ammonia gas are cooled from 325C to 300C at 1.2 atm. c. H2O(l) → H2O(g) at 100C at atmospheric pressure. d. CaCO3(s) → CaO(s...
August 15, 2009 by seth

Chemistry PLEASE HELP!!
energy from glucose is obtained from this equation when it is oxidized in the body C6H12O6 + 6O2 --> 6CO2 + 6H2O What is the catalyst in this equation?
March 22, 2012 by Annie

chemistry
determine the mass of CO2 produced when 51.2 g of CaO is reacted with 50.0 g of C according to the unbalanced equation CaO + C --------CaC2 =CO2
August 26, 2013 by tyler

Chemistry
In a car engine, gasoline (represented by C8H18) does not burn completely, and some CO forms along with CO2 and H2O. If 5 percent of the gasoline forms CO, A)What is the ratio of CO2 to CO molecules in the exhaust? B)What is the mass ratio of CO2 to CO? C)What percentage of ...
October 11, 2010 by Daniel

AP CHEMISTRY
I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s)<--> NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium Constant: ...
March 19, 2012 by DAN

AP CHEMISTRY
I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s)<--> NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium Constant: ...
March 19, 2012 by DAN

Chemistry
Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. It contains only C, H, and O. Combustion of 19.81 mg terephthalic acid produces 41.98 mg CO2 and 6.45 mg H2O. If 0.262 mol of terephthalic acid has a mass of 43.5 g, determine ...
April 25, 2010 by sean P.

chemistry
A chemist used 500g of glucose(c6H12o6)in a preparation of a drug in the laboratory how many moles was used?
February 2, 2015 by Anonymous

chem.(sci)
___NH3+___O2->N2+H2O (this is not balanced) how many moles of oxygen react with 0.23 moles of NH3? HOW many moles moles of N2 will be produced when reacted with 5 mol of O2?
January 24, 2013 by tyneisha

chemistry
Gaseous carbon monoxide reacts according to the balanced equation. If a total of 1040 kJ of heat is generated in the reaction as written, how many grams of CO2 are produced? enthalpy=-566kJ 2 CO(g) + O2(g) → 2 CO2(g)
February 25, 2010 by eng

Chemistry
According to the reaction 2Al+3H2SO4→3H2+Al2(SO4)3, the total number of moles of H2SO4 needed to react completely with 5.0 mol of AL is 1. 2.5 mol 2. 5.0 mol 3. 7.5 mol 4. 9.0 mol
December 4, 2014 by Hopeless person

Chemistry
I posted this question on Thursday April 12 and received some help..but need more.. thanks Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it...
April 16, 2007 by Julia

Chemistry
In an experiment to find the percentage of calcium carbonate in sand from a beach, 1.86 g of sand reacted with an excess of dilute hydrochloric acid to give 0.55 g of carbon dioxide. CaCO3 (s) + 2HCL (aq) CaCl2(aq) + CO2(g) + H2O (l) 1.Calculate the number of moles of ...
February 17, 2010 by Tony

chemistry 1
When butane undergoes complete combustion , the products are CO2 and H2O C4H10(g) + O2(g)-> CO2(g) + H2O(g) What is the value of the coefficient for oxygen when this equation is balanced
March 7, 2010 by jeanette

Chemistry Pretest
Consider the following balanced equation. 2 H2 + O2 ---> 2 H2O Which of the following statements is false? a) One molecule of O2 will react with 2 molecules of H2 b) One mole of O2 will react with 2 moles of H2 c) The complete reaction of 32.0 g of O2 will produce 2 moles ...
September 28, 2012 by Sarah

chemistry
I need help with a,b,and c. I tried to balance it but im having a little trouble Ethane gas, C2H6, burns in air and produces carbon dioxide and water vapor. a)write a balanced equation for this reaction. I know this isnt balanced but is this what im working with? C2H6 + O ---&...
March 25, 2007 by beth25

Chemistry
NaHCO3 + HCl = NaCl + H2O + CO2 The there are .0489 moles of CO2, and HCL is 6M. find the amount of HCL in mL and the grams of NaHCO3
September 7, 2014 by Joe

chemistry
In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B. How many molecules of substance B are produced when 26.5 g of substance A reacts? The molar mass of substance A is 21.9 g/mol. Step 1: Convert the mass of A to moles. Step 2: ...
September 24, 2013 by bb

chemistry
If 0.0490 mol of solid CaCO3 and 380 mL of 0.135 M aqueous H2SO4 are reacted, what volume (L) of gaseous CO2 measured at 1.1 atm pressure and 301 K is produced. H2SO4(aq) + CaCO3(s) → CO2(g) + CaSO4(s) + H2O(l)
November 21, 2010 by Confused

Chemistry
The combustion of methane can be described by the equation: CH4 (g) + 2 O2 (g) -> CO2 (g) +2H20 (g) If 22.0 mL of CO2 (g) were collected, what volume of H20 (g) also could be collected under the same conditions?
December 9, 2011 by Dani

Chemistry
Does the reaction between CO2(g) + Mg(OH)2(aq) produce MgCO3(s) + H2O(l) or Mg(HCO3)2 ??? Normally, Mg(CO3)2 but I suspect an excess of CO2 will produce the bicarbonate. For example, CO2(g) + Ca(OH)2(aq) ==> CaCO3(s) + H2O(l) and that is often done by exhaling into a flask ...
May 31, 2007 by Fiona

chemistry
The reaction for the complete combustion of acetylene is shown below. C2H2(g) + 5/2 O2(g) -----------> 2 CO2(g) + H2O(l) ÎH = -1299 kJ Use this reaction and the data below to calculate the heat of formation for acetylene. ÎHf[H2O(l)] = -285.8 kJ/mol ÎHf[...
December 5, 2014 by Afnan

chemistry
The reaction for the complete combustion of acetylene is shown below. C2H2(g) + 5/2 O2(g) -----------> 2 CO2(g) + H2O(l) ÎH = -1299 kJ Use this reaction and the data below to calculate the heat of formation for acetylene. ÎHf[H2O(l)] = -285.8 kJ/mol ÎHf[...
December 18, 2014 by Eman

chemistry
When gas is burned: CH4 + 2O2 = CO2 + 2H2O, how many moles of water are produced when 6.2 mol of methane are burned?
November 14, 2011 by Lisa

Chemistry
If 10g of NO react with 20g of O2, what is the maximum amount of NO2 that can be produced? My answer is Mol NO = 10/30 = 0.333 mols Mol O2 = 20/32 = 0.625 mols To react all the O2 you would need 2 NO*0.625 moles of NO/1mole O2 =1.25 O2? but, we just have 0.333 mols, so NO is ...
May 25, 2013 by Timofey

college: Chemistry
Hi can someone help me with this other problem from my homework, The thermochemical equation is C6H12O6(s)+ 6O2(g)--> 6CO2(g)+ 6H2O(g) reaction is -2539.01 kJ/mol Part B) What is the minimum number of photons with wavelength of 645nm needed to prepare 135 grams of glucose? ...
February 10, 2009 by Shylo

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