Enthalpy of reaction

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Questions (70)

Please explain the answer.Which statement about this reaction is correct? 2Fe(s)+3CO2(g)--->Fe2O3(s)+3CO(g) delta H = 26.6 kJ A.
1. 5 answers
2. asked by Anonymous
3. 3,845 views
How much energy is evolved during the reaction of 48.7 g of Al, according to the reaction below? Assume that there is excess
1. 3 answers
2. asked by Brandee
3. 1,736 views
Calculate the DHrxn ofC6H12O6 (s) + O2 (g) --> CO2 (g) + H2O (l) with DHf. C6H12O6(s) -1260.04 O2(g) 0 CO2(g) -393.5 H2O(l)
1. 7 answers
2. asked by Anonymous
3. 636 views
What is the standard enthalpy of reaction for the following chemical reaction?CO2(g) + 2KOH(s) --> H2O(g) + K2CO3 (s) Express
1. 5 answers
2. asked by Sarah
3. 4,576 views
How much heat is released if 2.00 molesCF2Cl2 reacts with 70.0 g F2 with a 75.0 percent yield? CF2Cl2 + F2 ! CF4 + Cl2 �H for
1. 4 answers
2. asked by cheri
3. 2,550 views
Calculate (delta) H rxn for2NOCl(g)---- N2(g) + O2(g) + Cl(g) given the following set of reactions: 1/2N2(g) +
1. 4 answers
2. asked by Kaylyn
3. 3,772 views
How many kilojoules of heat are released when 38.6g of CH4 reacts completely with O2 to form CH3OH at constant pressure?
1. 5 answers
2. asked by Jamie
3. 5,754 views
In a constant‑pressure calorimeter, 70.0 mL of 0.350 M Ba(OH)2 was added to 70.0 mL of 0.700 M HCl. The reaction caused the
1. 4 answers
2. asked by Anonymous
3. 2,751 views
1) A 0.1375-g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 3024 J/C.
1. 7 answers
2. asked by Tim
3. 5,205 views
Calculate the standard enthalpy of reaction for the reaction 2Na + 2H2O——> 2NaOH+ H2. Standard enthalpies of formation are
1. 5 answers
2. asked by Opal
3. 5,987 views
CH3OH(g) ----> CO(g) + 2H2 (g) (delta H =+90.7k)A) is heat absorbed or released in the course of this reaction? b) calculate the
1. 4 answers
2. asked by Anna
3. 4,771 views
According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy?SiO2(
1. 6 answers
2. asked by Amber
3. 7,063 views
Given the data in the table below, ∆Horxn for the reaction3NO2(g) + H2O(l) → 2HNO3(aq) + 3NO(g) is __________ kJ. Substance
1. 4 answers
2. asked by Jenny
3. 2,693 views
Calculate the change in the enthalpy of the reaction.C4H4(g)+2H2(g)===>C4H8(g) Use the following: change in enthalpy of
1. 4 answers
2. asked by Natalie
3. 2,064 views
Calculate the enthalpy of reaction for the combustion of ethene.Express the enthalpy of reaction calculated in question above as
1. 6 answers
2. asked by shyanne
3. 1,791 views
The molar heat of reaction, H rxn , for the reaction ofCa(s) + 2H+(aq)-> Ca2+(aq) + H2(g) was found to be -550kJ/mol The change
1. 4 answers
2. asked by Anonymous
3. 1,091 views
Calculate the ΔH of reaction for:C2H4(g) + H2O(l) = C2H5OH(l) if the ΔH of formation for C2H4(g), H2O(l) and C2H5OH are +52,
1. 3 answers
2. asked by danny 16
3. 2,317 views
H2 and F2 react according to the following equation, forming HF.H2(g) + F2(g)  2HF(g); H° = –271 kJ If H2(g) and F2(g)
1. 4 answers
2. asked by Kayla
3. 3,544 views
Diborane (B2H6) is a highly reactive boron hydride, which was once considered as a possible rocket fuel forthe U.S. space
1. 4 answers
2. asked by Lisa
3. 3,565 views
A 2.50-g sample of powdered zinc is added to 100.0 mL of a 2.00-M aqueous solution of hydrobromic acid in a calorimeter. The
1. 4 answers
2. asked by brianna
3. 1,375 views
From the enthalpies of reaction2C(s)+O2(g)�¨2CO(g)ƒ¢H=−221.0kJ 2C(s)+O2(g)+4H2(g)�¨2CH3OH(g)ƒ¢H=−402.4kJ calculate
1. 3 answers
2. asked by ryno
3. 1,959 views
Given:Equation #1: 4NH3(g) + 5O2(g) = 4NO(g) + 6H2O; ΔH of reaction = -1170 kJ Equation #2: 4NH3(g) + 3O2(g) = 2N2(g) + 6H2O;
1. 4 answers
2. asked by danny
3. 2,603 views
Some spacecrafts use hydrazine (N2H4) as fuel and is burned according to the following reaction:N2H4(l)+N2O4(g)=>2 N2O(g)+2
1. 3 answers
2. asked by Brandi
3. 902 views
Determine the amount of heat (in kJ) given off when 2.07 multiplied by 104 g of ammonia are produced according to the following
1. 4 answers
2. asked by jamie
3. 832 views
16. From the standard enthalpies of formation, calculate the Horxn for the reaction: (Hof = -151.9 kJ/mol for C6H12.)C6H12
1. 3 answers
2. asked by nona
3. 688 views
Using values from Appendix C in your textbook, calculate the value of ΔH° for the reaction4 NH3(g) + 5 O2(g) → 4 NO(g) + 6
1. 1 answer
2. asked by Someone
3. 829 views
Given the reaction3 NO2(g) + H2O(l) �¨ 2 HNO3(l) + NO(g) ƒ¢rH = -72.0 kJ, calculate the molar enthalpy of reaction, rH for:
1. 1 answer
2. asked by ?????halp
3. 645 views
Calculate the molar enthalpy of reactionstandard enthalpy of formation below. H20 = -285.8 kj/mole H+ = 0.0 kj/mole OH- = -229.9
1. 3 answers
2. asked by sam
3. 538 views
The answer for this question is ΔHrxn=-441.40174468085 kJ/mol but I don't know how to arrive to that answer.0.47g of magnesium
1. 2 answers
2. asked by Liz
3. 475 views
I am not to sure how to approach the problem...Hydrazine is used as a rocket fuel because its reaction with oxygen is extremely
1. 3 answers
2. asked by Anonymous
3. 720 views
Given the equation C2H4(g)+3O2(g)>2CO2(g)+2H2O(l)+1411kJ, how much heat is released when 8.00g of O2 react?
1. 2 answers
2. asked by Haily
3. 996 views
How much heat is evolved when 878 kg of ammonia is produced according to the following equation?N2(g) + 3H2(g) 2NH3(g) ΔH =
1. 3 answers
2. asked by Bethany
3. 584 views
If the ÄH of reaction for the following 2ZnS (s) + O 2(g) = 2ZnO (s) + 2S (s) is -290 kJ, then what is theÄH of reaction for
1. 2 answers
2. asked by nalleli
3. 488 views
Determine the molar enthalpy of reaction for the reaction of magnesium with hydrochloric acid.Mass of calorimeter + hydrochloric
1. 3 answers
2. asked anonymously
3. 47 views
Determine the molar enthalpy of reaction for the reaction of the reaction of magnesium oxide with hydrochloric acid
1. 3 answers
2. asked anonymously
3. 38 views
How much energy is evolved during the reaction of 48.7 g of Al, according to the reaction below? Assume that there is excess
1. 3 answers
2. asked by Brandee
3. 1,377 views
What is DH°rxn for the following reaction, CH4(g) + 2 O2(g) ---> CO2(g) + 2 H2O(l), givenDH°f[CH4(g)] = -74.8 kJ;
1. 2 answers
2. asked by AnthoniiEllis
3. 752 views
Calculate the enthalpy of reaction for the following:N2 + 3H2 -> 2NH3 they are all gases. Is this reaction endothermic or
1. 4 answers
2. asked by Chioma
3. 4,237 views
Consider the reaction, C2H4(g) + H2(g) ® C2H6(g), where DH = – 137 kJ. How many kilojoules are released when 55.3 g of C2H4
1. 4 answers
2. asked by Cooper
3. 2,693 views
Given H2(g) + (1/2)O2(g) ---> H2O(l), dH = -286 kJ/mol, determine the standard enthalpy change for the reaction 2h2O(l) --->
1. 3 answers
2. asked by AJ
3. 2,706 views
Calculate enthalpy of reaction C2H4 + H2 gives C2H6.enthalpy of combustion of ethene, H2,and ethane are -1410,-286,-15.60kj/mol
1. 4 answers
2. asked by Shaika
3. 2,535 views
A 2.50-g sample of powdered zinc is added to 100.0 mL of a 2.00-M aqueous solution of hydrobromic acid in a calorimeter with a
1. 4 answers
2. asked by she
3. 2,159 views
Given the equation 2SO2(g) +O2(g) -> 2SO3(g), H = -197.8 kJ per Mole, find the quantity of heat transferred when 8.54 grams of
1. 4 answers
2. asked by Madalyn
3. 1,888 views
How many kilojoules are absorbed when 266 g of PCl5 reacts?PCl5(g)→PCl3(g)+Cl2(g)ΔH=+67kJ
1. 3 answers
2. asked by Cara
3. 1,556 views
Calculate the molar enthalpy of reaction per mole of carbon in the following reaction:3 C(s) + 2 Fe2O3(s) + 466 kJ
1. 3 answers
2. asked by Anonymous
3. 1,548 views
Fe2O3(s) + 3 CO(g) −→ 2 Fe(s) + 3 CO2(g)Given: 2 Fe2O3(s) −→ 4 Fe(s) + 3 O2(g) ∆H = 1616.6 kJ/mol CO(g) −→ C(s) +
1. 2 answers
2. asked by jane
3. 1,184 views
Calculate Hrxn for the reaction below.2 NOCl(g) N2(g) + O2(g) + Cl2(g) You are given the following set of reactions. 1/2 N2(g) +
1. 2 answers
2. asked by mara
3. 1,142 views
if my reaction is 2Na + 2H2O -> 2NaOH +H2, and i have been given 1 gram of sodium, how would i measure the theoretical change in
1. 1 answer
2. asked by Karn
3. 1,016 views
2C2H6 + 7O2 yields 4CO2 + 6H2OWhat is the (∆rH°) of this equation?
1. 3 answers
2. asked by Quin
3. 973 views
A hemoglobin molecule (molar mass =65000 g) can bind up to 4 oxygen molecules. In a certain experiment a .085-L solutoin
1. 1 answer
2. asked by Mischa
3. 954 views

Enthalpy of reaction

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