Thursday
December 8, 2016

# Search: CO2(g) + 2H2O(l)--2O2(g) + CH4(g)

Number of results: 4,213

Chemistry
What is the chemical equation for the combustion reaction between methanol and air? CH4 + O2 ==> CO2 + H2O. All hydrocarbons produce CO2 and H2O when they are combusted in air. The above equation isn't balanced. I assume you can do that? If not, ask OR take a shot at it and...
January 18, 2007 by Raj

AP chem
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 11, 2009 by sarah

chemistry
why does a can of soda explode in a hot car? As the temperature rises, the gas (carbon dioxide that make the fizzle in soda pop)exerts more and more pressure until the container ruptures. Any gas heated tries to expand due to greater molecular motion.If it is contained, it ...
May 21, 2007 by Lillian

AP Chemistry
For the reaction ?CH4+ ?O2 ==> ?CO2+ ?H2O, what is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 3.67 g of CH4 (16.0425 g/mol) and 4.23 g of O2 (31.9988 g/mol)? Answer in units of g I know that you have to balance the equation, so the coefficients 1, ...
December 1, 2014 by Savanna

CHemistry
CH4(g) + CO2(g) <--> 2CO(g) + 2H2(g) Kp = 4.5 x 10^2 at 825 K An 85.0 L reaction container initially contains 22.3 kg of CH4 and 55.4 kg of CO2 at 825 K. Assuming ideal gas behavior, calculate the mass of H2 present in the reaction mixture at equilibrium.
March 18, 2010 by Krysten

Chem
Calculate the work (in kJ) when 1.80 moles of methane react with excess oxygen at 389 K: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) I got 11661.26 Calculate the change in entropy (in J/K) when 70.1 g of nitrogen gas is heated at a constant pressure of 1.50 atm from 12.0 ºC to ...
March 27, 2013 by Anonymous

Chemistry 2
Calculate Kp for the reaction C(s)+CO2(g)<-->2CO(g) kp=? C(s)+2H2O(g)<--->CO2(g)+2H2 kp1=3.47 H2(g)+CO2(g)<--->H2O(g)+CO(g) kp2=0.735
February 21, 2014 by Sharon

Calculating DH°rxn?
What is DH°rxn for the following reaction, CH4(g) + 2 O2(g) ---> CO2(g) + 2 H2O(l), given DH°f[CH4(g)] = -74.8 kJ; ...DH°f[CO2(g)] = -393.5 kJ; ...DH°f[H2O(l)] = -285.5 kJ. a. ) -604.2 kJ b. ) 869.7 kJ c. ) -997.7 kJ d. ) -889.7 kJ e. ) 997.7
June 12, 2009 by AnthoniiEllis

Science
The combustion of methane in a laboratory burner is represented by the following equation: CH4 + 2 O2 > CO2 + 2 H2O Given the following three thermochemical equations: C + H2 > CH4 H=-74.87kJ C + O2 > CO2 H= -393.5 2 H2 + O2 > 2 H2O H=-571.6 a) Determine the molar ...
July 9, 2015 by Mike

ap chem repost
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

chem repost
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 - enthalpy change and finiding volume of
29. Consider the following chemical equations and their enthalpy changes. CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) ΔH = −8.0 × 102 kJ CaO(s) + H2O(_) → Ca(OH)2(aq) ΔH = −65 kJ What volume of methane, at 20°C and 100 kPa, would have to be combusted...
June 8, 2011 by Farah

Chemistry
calculate the theoretical yield (in grams) of the solid product, assuming that you use 1.0 g FeC2O4×2H2O and that oxygen is the excess reactant. FeC2O4×2H2O (s) + O2(g) ---> FeO(s) + H2O(g) + CO2(g) Its balanced equation is 2FeC2O4×2H2O (s) + O2(g)----> 2FeO(s) + 4H2O...
October 14, 2010 by sonya

chemistry
CH4 (g) + 2 O2 (g) --> CO2 (g) + 2 H2O (g), (triangle)H rxn =-802.3 kj How much heat is produced by the complete combustion of 237 g of CH4?
April 29, 2015 by Kim

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
What ratio is used to carry out each conversion? a.mol CH4 to grams CH4 b.L CH4(g) to mol CH4(g)(at STP) c.molecules CH4 to mol CH4 I honestly don't kno what it's asking me I got 1 mol CH4/ 16(g) CH4 for a. 1 mol/22.4 L for b. and 6.02 x 10^23 molecules/1 mol but I don't think...
July 16, 2010 by Anonymous

Chemistry
Calculate the value of Kp for the equation C(s)+CO2(g)<->2CO(g) Kp=? given that at a certain temperature C(s)+2H2O(g)<->CO2(g)+2H2(g) Kp1=3.33 H2(g)+CO2(g)<->H2O(g)+CO(g) Kp2=.733 Please show detailed steps.
February 7, 2013 by Julia

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
When methane is combusted with excess oxygen 891 kJ of energy is produced start with 100g of methane. how much energy is produced? is this reaction endothermic or exothermic? Also provide enthalpy change for this reaction: CH4 + 2O2 (arrow)= CO2 + H2O + 891 kJ
October 19, 2015 by Al

chemistry
May 2, 2011 by anonymous

chemistry
Consider the reaction: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(l) ΔH = - 890.3 kJ What volume of CH4(g) at 25°C and 755 Torr will produce 88600 kJ of heat when reacted with excess oxygen?
March 21, 2011 by Kamila

Stoichiometry
How many grams of oxygen are required to completely burn 85.6 grams of methane (CH4)? CH4 + O2 → H2O + CO2
November 14, 2012 by Mike

chemistry
From the following information, determine ΔH°f of malonic acid, CH2(COOH)2(s). CH2(COOH)2(s) + 2O2(g) → 3CO2(g) + 2H2O(l); ΔH° = –861.0 kJ Substance ΔH°f (kJ/mol) CO2(g) –393.5 H2O(l) –285.8 A. 2613.1 kJ B. –1540.3 kJ C. –2613.1 kJ D. 891.1 ...
December 2, 2010 by Jake

chemistry
a sample mixture of ch4 and c2h6 weighing 0.732 g burned to give 2.064 g co2. What is the mass of ch4 in the mixture?
July 4, 2012 by lawrencly

chemistry
how many grams of CH4 (methane) must be burned to form 82.6g of H2O? equation: CH4+O2----> CO2+H2O
January 16, 2014 by frances

chemistry
how many grams of CH4 (methane) must be burned to form 82.6g of H2O? equation: CH4+O2----> CO2+H2O
January 16, 2014 by jocelyn

Chemistry
A sample of natural gas is 80.0% CH4 and 20.0% C2H6 by mass. What is the heat from the combustion of 1.00 g of this mixture? Assume the products are CO2 and H2O. CH4 = -74.87 and C2H6 = -84.68
November 1, 2007 by Lauren

Chemistry
In the combustion of natural gas according to the equation CH4 + 2 O2 -> CO2 +2 H20, how many grams of water are formed during the combustion of 0.264 mole of CH4?
October 26, 2014 by Andrew

chemistry
For the following reactions is delta Hrnx equal to delta Hf of the products : a. CaCO3(g)----> CaO + CO2(g) b. 2Na(s)+ Cl2(g) ---> 2NaCl(s) c. C(s)+ O2(g) -----> CO2(g) d. CO(g)+ 1/2O2(g)---> CO2(g) e. Na(s)+ 1/2Cl2(l) ---> NaCl(s) f. Na(s)+ 1/2Cl2(s) ---> ...
October 23, 2008 by Sara

chemistry
30.0 g CuO + 20.0 g CH4 can produce a maximum of __?__ g Cu. 4 CuO + CH4 „_ 2 H2O + 4 Cu + CO2
December 5, 2011 by Anonymous

chemistry
when co2 dissolves in water, the following equillibrium is established, CO2 + 2H2O GIVES H3O(+) + HCO3(-) for which the equillibrium constant is 3.8 * 10^-7 and pH is 6. then what is the ratio of concentration HCO3(-) to CO2?
February 5, 2011 by arpan

Science (Stoichiometry with Gasses) (Chemistry)
If 1.00 kg of methane (CH4) is burned completely (in excess O2) and the CO2 produced is collected at 20°C and 1.00 atm, what volume (L) will this CO2 occupy??
November 16, 2016 by Ray

chemistry
A 10.00g sample of a mixture of CH4 and C2H4react with O2 at 25C and 1 atm to produce CO2 and water. If the reaction produces 520kJ of heat what is the mass percent of CH4 in the mixture? I don't want the answer just how to o
March 14, 2011 by Aly

Chemistry
Consider the following three reactions: Ca(s) + 2H2O(l) ---> Ca2+(aq) + 2OH^- (aq) + H2(g) CaO(s) + H2O(l) ---> Ca2+ (aq) + 2OH^- (aq) H2(g) + 1/2O2 (g) ----> H2O (l) Delta H = 430.75 kJ Delta H = 81.55 kJ Delta H = 285.63 kJ Determine Delta H for the overall reaction...
April 5, 2016 by Rose

chemistry
How many liters of hydrogen gas can be produced if 102 grams of methane gas (CH4) are combusted at 315 K and 1.2 atm? Show all of the work used to solve this problem. CH4 (g) + 2 O2 (g) CO2 (g) + 2 H2O(g)
December 19, 2011 by sarena

Chem
Using the same unbalanced chemical reaction, what is the theorectical yeild of CO2 if 16.0g of methane reacts with excess oxygen: CH4(g)+ O2 (g)→ CO2 (g)+ H2O(g)
November 25, 2015 by Debra

science
CH4 + O2CO2 + 2H2O
May 22, 2013 by Anonymous

chemistry
Calculate how many moles of productwould be produced if .310 mol of the first reactant were to react completely. (a) CO2 + 4 H2 ¨ CH4 + 2 H2O CH4 _____ mol H2O _____ mol (b) C3H8 + 5 O2 ¨ 4 H2O + 3 CO2 H2O _____ mol CO2 _____ mol (c) 3 H2SO4 + 2 Fe ¨ Fe2(SO4)3 + 3 ...
January 6, 2011 by Anonymous

Chemistry
Calculate the adiabatic flame temperature of burning CH4 (g) at 1 atm when burned with 50% excess air, and the reactants enter at 25oC. Standard heat of formation: Ch4: Hr = -49.963kj/mol CO2: Hr = - 393.25 kJ/mol H20(g) : Hr = - 241.835 kj/mol Heat capacities (J/mol), T in oC...
August 10, 2014 by nishka

chemistry
could someone check my answers to see if they are right? Balance the following equation and give the value of the stoichiometric coefficient marked with a question mark. 6 KNO3+ _ S + ? H2O _ H2SO4+ _ N2+ _ K2SO4 answer:6KNO3 + 5S + 2H2O --> 3 K2SO4 + 3N2 + 2H2SO3 42 KMnO4...
January 24, 2007 by key

Chemistry
Calculate the value of the standard enthalpy change for each of the following reactions (standard enthalpy for Na2SO4(s) is -1375.653 kj/mole): a) 4HBr(g) + O2(g) = 2H2O(I) + 2Br(I) b) 2Na(OH)(s) + SO3(g) = Na2SO4(s) + H2O(g) c) CH4(g) + 4CI2(g) = CCI4(I) + 4HCI(g) d) Fe2O3(s...
July 3, 2014 by Brett

Chemistry
Calculate the value of the standard enthalpy change for each of the following reactions (standard enthalpy for Na2SO4(s) is -1375.653 kj/mole): a)4HBr(g) + O2(g) = 2H2O(I) + 2Br(I) b)2Na(OH)(s) + SO3(g) = Na2SO4(s) + H2O(g) c)CH4(g) + 4CI2(g) = CCI4(I) + 4HCI(g) d)Fe2O3(s) + ...
July 3, 2014 by Dan

Chemistry
If someone could please be kind enough to see me through this problem? Calculate the value of Kp for the equation C(s) + CO2(g) <--> 2CO(g) Kp? Given that at a certain temperature.. C(s) + 2H2O(g) <--> CO2(g) + 2H2(g) Kp1 = 3.03 and H2(g) + CO2(g) <--> H2O(g...
March 5, 2012 by Tracy

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

chemistrt
17.8 g of CH4 react with 55.4 g of O2 to form CO2 and H20 identify the limiting and excess reagent. what is the mass of CO2 produced? how much excess reactant is leftover?
December 11, 2011 by Skye

Chemistry
All volume measurements are carried out at the same temperature and pressure. If 20.0 L of O2 (g) are allowed to completely react with a sample of pure CH4 (g) in a combustion process producing CO2 (g) as the only carbon-containing product, what is the maximum volume of CH4 (g...
December 1, 2011 by Anonymous

Chemistry Honors
I need help balancing equations 1) CH4+O2-->CO2-->+H2O 2) Hf+N2-->Hf3N4 3) Mg+H2SO4-->MgSO4+H2 4) C2H6+O2 -->CO2+H2O 5) Pb(NO3)2 + NaI--> PbI2+NaNO3 6) Fe+O2-->Fe3O4
October 20, 2010 by S

chem
The reaction: 2C2H2+5O2->5O2->4CO2+2H2O is performed by mixing 175 grams of C2H2 and 175 grams of O2 to produce 127 grams of CO2 1)Limiting reagent 2)Theretical yeield of CO2 3)Percent yield of CO2
September 29, 2013 by Alexandra

chemistry
17.8 grams of CH4 reacts with 55.4 g of )2 to from CO2 and H20 what is the mass of H20 formed? and how much excess reactant is leftover? so i think that O2 is the limiting reagent and CH4 is the excess reagent help?
December 11, 2011 by Skye

chemisy
Methane (CH4) burns in oxygen to produce carbon dioxide and water vapor. The balanced equation is: CH4 + 2 O2 -> CO2 + 2 H2O What volume of carbon dioxide is produced when 3.2 L of oxygen are consumed?
December 5, 2012 by Lena

chemistry
Methane (CH4) burns in oxygen to produce carbon dioxide and water vapor. The balanced equation is: CH4 + 2 O2 -> CO2 + 2 H2O What volume of carbon dioxide is produced when 3.2 L of oxygen are consumed?
December 5, 2012 by Lena

Chemistry
a mixture of methane CH4 and ethane C2H6 is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 346mmHg at the same temp and volume as the original mixture, calculate the ratio of moles of CO2 produced to moles of the ...
March 29, 2011 by Carolyn

Chemistry
a mixture of methane CH4 and ethane C2H6 is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 346mmHg at the same temp and volume as the original mixture, calculate the ratio of moles of CO2 produced to moles of the ...
March 29, 2011 by Carolyn

Chemistry
The combustion of carbon monoxide is represented by the equation below: CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value of the standard enthalpy change, for the combustion of CO at 298 K using the following info. C (s) + 1/2 O2(g) ----> CO (g) delta H at 298K = -...
October 9, 2007 by Nick

chemistry check
1. 48 KNO3+ _ C 12 H22O11-„³ ? CO2+ _ N2+ _ K2CO3+ _ H2O a. 12 b. 24 s c. 36 d. 48 The reaction is 48 KNO3 + 5 C12H22O11 --> 24 K2CO3 + 36 CO2 + 55 H2O + 24 N2 So the answer is C =36 2. 6 KNO3+ _ S + ? H2O„³ _ H2SO4+ _ N2+ _ K2SO4 a. 2 b. 4 c. 6 d. 8 The balanced ...
January 24, 2007 by key

chemistry
Given these reactions : X(s) + 1/2O2(g) --> XO(s) (Delta)H= -707.7 kj XCO3(s) --> XO(s)+CO2(g) (Delta)H= +381.9kj What is (delta)Hrxm for this reaction? X(s)+1/2 O2(g)+CO2(g) ---> XCO3(s) (Delta)H= ?
October 28, 2016 by anon

Chemistry / Stoichiometry
When 1 mol of CH4 is burned, 490 kJ of energy are released as heat. CH4 + O2 -> 2H2 + CO2 If 3.2g of CH4 are burned, what is the value of the heat of the reaction? The answer worked in class was -180 kJ, but while I was redoing problems, I got the answer 98 kJ (both ...
April 9, 2016 by Caitlyn

chemistry
Calculate the value of T delta S (KJ) of reaction for the equation as written. (It is given that the standard enthalpies (J/K mol)are CH3COOH=159.8, O2=205.138, CO2=213.7, H20=69.91) CH3COOH(l) + 2 O2(g) --> 2 CO2(g) + 2H2O(l)
March 9, 2008 by Anonymous

chemistry
write the equilibrum constant expression for Kp of the following: a.) O2-->--<2O3(g) b.)SiH4(g) + 2O2(g)-->--<SiO(s) + 2H2O(g) c.)MgO(s) + SO2(g) + O2(g)-->--<MgSO4(s) d.)2PbS(s) + 3O2(g)-->--< 2PbO(s) + 2SO2(g)
October 18, 2012 by Helen

chemistry
Methane gas is burned releasing Carbon Dioxide into the atmosphere. How much CO2 (g) is released if 78.5 Liters of Methane is burned? CH4 + O2 --> CO2 + H2O
May 1, 2013 by kate

Chemistry
Calculate the H3O+ concentration and pH of a carbonated beverage that is .10 M in dissolved CO2- (Essentially all of the H3O+ comes from the first stage of dissociation, CO2 + 2H2O = H3O^+ + HCO3-, for which K1 = 4.4 x 10^-7)
November 17, 2010 by Kate

chemistry
Balance each of the following equations a)CH4+CL2......>CCl4+HCl b)AL(OH)3+H2SO4.....>Al2(SO4)3+H2O c)Fe+H2O......>fe3O4+H2 d)Al4C3+HCl......>AlCl3+CH4 e)C2H6+O2......>CO2+H2O f)P2H4.......>PH3+P4 g)S2Cl2+NH3......>N4S4+NH4CL+S8 h)Ag+HNO3.......>AgNO3+...
April 15, 2012 by faisal

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
Consider the reaction, CH4(g) + 2 O2(g) => CO2(g) + 2 H2O(g). How many grams of H2O(g) will be made by the reaction of 17 moles of CH4(g) with 7 moles of O2(g)?
November 29, 2010 by Alle

chemistry
Calculate the value of the thermodynamic equilibrium constant for the following reactions at 25.0 °C. (a) N2H4(g) + 2O2(g) 2NO(g) + 2H2O(g) Kp = H20=-228.6 NO= 86.69 N2H4= 159.3 02 = 0
March 5, 2016 by Lia

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

SCIENCE
CH4+O2>CO2+H2O
January 8, 2015 by JACORRIAN FOWLER

Chemistry
From your experience, predict which of the following reactions are spontaneous. a) Zn(s) + 2H+(aq)--> Zn+2(aq) + H2 (g) b) CaCO3(s) + 2H2O(l) --> Ca(OH)2(s) + H2CO3(aq) c) CH4(g) + O2(g) --> CO2(g) + 2H2O(g) d) Ag+(aq) + Cl-(aq) --> AgCl (s) Our book spends very ...
February 14, 2007 by Chris

chem
Can someone check this for me? Predict which reactions are spontaneous: a) Zn(s) + 2H+(aq) --> Zn+2(aq) + H2(g) b) CaCO3(s) + 2H2O(l) --> Ca(OH)2(s) + H2CO3(aq) c) CH4(g) + O2(g) --> CO2(g) + 2H2O(g) d) Ag+(aq) + Cl-(aq) --> AgCl(s) I said a) and c) were ...
March 4, 2007 by Chris

Chemistry
How many liters of gasesous methane (CH4) must be burned in oxygen to produce enough H2O and CO2 to fill a 3.0 L balloon? Assume that H2O and CO2 are the only combustion products and that the temperature and pressure remain constant. How would I solve this? Attempt: 3.OL (1 ...
August 29, 2010 by Amy~

Chemistry
what is the electronegativity of NH3, CH4, AND CO2?
April 2, 2012 by Morgan

Chemistry
A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final gas density is 0.7282 g/L. What is the ...
November 18, 2010 by Natalie

chemistry
Using the following thermochemical data, what is the change in enthalpy for the following reaction? 2H¿(g) + 2C(s) + O¿(g) d C¿HOH(l)? C2H5OH(l) + 2O2(g) d 2CO2(g) + 2H2O(l),  DH = -875 kJ C(s) + O¿(g) d CO¿(g),  DH = -394.51 kJ H2(g) + ½O2(g) d H2O(l),  DH = -285.8 kJ
December 9, 2014 by caleb

Chemistry
What mass of CO2 could be formed from the reaction of 16 g of CH4 with 32 g of O2 ?
June 20, 2011 by christi

Chemistry
Many power plants produce energy by burning carbon-based fuels, which also produces CO2. CO2 is a greenhouse gas, so over-production can have negative effects on the environment. Use enthalpy of formation data to calculate the number of moles of CO2 (g) produced per mega joule...
January 27, 2011 by Harold

Chemistry
How many liters of CO2 would be produced if 32 grams of CH4 are combined with oxygen?
November 9, 2010 by Renee

chemistry
show how CH4 +O2=CO2+H2O obeys the law of conservation of mass
October 15, 2011 by denis

Chemistry
What element is undergoing oxidation (if any) in the following reaction? CH4(g) + 2 O2(g) ¨ CO2(g) + 2 H2O(g)
December 6, 2012 by Emma

Chemistry
Complete each ionic equation Cu+2 + SO4-2 + 4H2O ----> Ca+2 +2NO3-1 + 4H2O ----> 3K+1 +PO4-3 + 6H2O ----> Na+1 + Br-1 + 2H2O ----> 2Na+1 + S-2 + 2H2O -----> 2NH4+1 + CO3-3 + H2O ----> 2Na+1 + Cr-2 + 2H2O -----> Mg+2 + 2Br-1 + 4H2O -----> Na+1 + Cl-1 + ...
April 28, 2012 by Tiffany

Chemistry
Balance the following equations: A. N2O>N2+O2 B. HBr>H2+Br2 C. CH4+O2>CO2+H2O
November 28, 2012 by Bri

chemistry
Using standard heat of formations. (Appendix II in text). Calculate the standard enthalpy change for the combustion of methane. CH4 (g) + 2 O2 ---¨ 2CO2(g) + 2H2O (l) ƒ¢H0 = ?
March 6, 2012 by chris

chemistry
Now "react" methane (CH4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). Start with one molecule of methane and one molecule of oxygen. Continue reacting molecules of CH4 and O2 until all the reactant atoms have been used to form products. Summarize what ...
August 1, 2008 by kayla

Chemistry
The decomposition of ozone is believed to occur in two steps O3 <==> O2 + O O3 + O ---> 2O2 Identify any reaction intermediate. What is the overall reacion? I got O3 + O3 --> O2 + 2O2
February 17, 2008 by Lauren

Chemistry
The decomposition of ozone is believed to occur in two steps O3 <==> O2 + O O3 + O ---> 2O2 Identify any reaction intermediate. What is the overall reacion? I got O3 + O3 --> O2 + 2O2
February 18, 2008 by Lauren

Chemistry
Rank the following 4 compounds in order of lowest to highest freezing point. Enter the formulas in the spaces provided. For example, enter CH4 as CH4. H2O MgO CH4 H2S
November 19, 2011 by Whats Good

chemistry
When 85g of CH4 are mixed with 160g of O2 what is the maximum amount of CO2 that can be produced? plis help me ASAP
December 31, 2014 by zizi

Chemistry
For the following reaction, identify the substance being oxidized and reduced CH4 + 2 O2 = CO2 + 2 H2O
July 6, 2016 by Dylan

Chemistry
Calculate delta H for the reaction below using Hess's Law: C2H6 ---> C2H2 + 2H2 ------------------------------------------ C2H2 + 5/2O2 --> 2CO2 + H2O (H = -1300 kJ) 2H2 + O2 --> 2H2O (H= -572 kJ) 2C2H6 + 7O2 --> 4CO2 + 6H2O (H= -3120 kJ)
November 14, 2012 by Gabby

Chemistry
The equation below shows the incomplete combustion of ethene. C2H4(g) + 2O2(g) ==> 2CO(g) + 2H2O(g) If 2.70 mol C2H4 is reacted with 6.30 mol O2, a) identify the limiting reagent. b) calculate the moles of water produced. Show all steps.
March 28, 2010 by Keith

chemistry
The equation for burning C2H2 is 2C2H2(g) + 5O2(g) ⎯→ 4CO2(g) + 2H2O(g) a. If 15.9 L C2H2 react at STP, how many moles of CO2 are produced? (Hint: At STP, 1 mol = 22.41 L for any gas.) b. How many milliliters of CO2 (density = 1.977 g/L) can be made when 59.3 mL O2...
June 2, 2010 by rob

Chemistry
CH4 + O2 = CO2 + H2O AND the change in heat is minus 890. Now the question is what is the energy bond of (C=O)?
January 14, 2016 by Akhter

chemistry
Balance this equation. If a coefficient of "1" is required, choose "blank" for that box. CH4 + O2 → CO2 + H2O
May 2, 2016 by derek

chemistry
calculate the number of moles and mass of methane (ch4) required to produce 11 kg of carbondoxide(co2) when combusted ?
September 17, 2016 by anu

Chemistry
Enthalpy changes: H2O2(l) ----> H2O(l) + 1/2P2(g) delta H= -94.6kJ H2(g) + 1/2O2(g)----> H2O2 delta H= -286.0kJ Calculate the value on delta H for the reaction: H2(g) + H2O2(l)----> 2H2O(l)
May 19, 2012 by Megan

chemistry - hess's law (check + help)
31. Carbon monoxide reacts with hydrogen gas to produce a mixture of methane, carbon dioxide, and water. (This mixture is known as substitute natural gas.) 4CO(g) + 8H2(g) → 3CH4(g) + CO2(g) + 2H2O(_) Use the following thermochemical equations to determine the enthalpy ...
June 8, 2011 by Farah

chemistry
Which molecule is most likely to contain only single covalent bond? a)co2 b)HCN c)CH4 d)H2ccH2
January 20, 2011 by Anonymous

Chemistry
How much heat is associated with the burning of 2.27 g of methane in the following unbalanced reaction: CH4(g) + O2(g) →CO2(g) + H2O(g)?
March 7, 2012 by John

chemistry
if 10.5 moles of CH4 react with oxygen, what is the volume of CO2 (in liters) produced at 20.9 degrees celsius and 0.951 atm?
November 18, 2014 by Anonymous

Chemistry
Use average bond energies to calculate delta Hrxn for C(s)+2H2O(g)-->2H2(g)+CO2(g)
December 5, 2010 by Kate

chemistry
I need to know how to figure this out, step by step... Don't assume I know anything.. Break it down for me like I'm a 5 year old... I'm really horrible at figuring out where to even begin... what steps to use.. etc.. Thank you!! CO2(g)+4H2(g)→CH4(g)+2H2O(g) How many ...
March 2, 2015 by Jennie