Wednesday
October 22, 2014

Search: Given: *Fe2O3(s)+3CO(s)

Number of results: 18,469

chemistry 2
the balanced equation for the reduction of iron ore to the metal using CO is Fe2O3+3CO(g) -> 2Fe+3CO so what is the maximum of iron in grams that can bbe obtained from 454g (1.00 lb) of iron (III) oxide? AND what mass of CO is required to react with the 454g of Fe2O3? ...
October 9, 2011 by cheryl

CHEMISTRY
Fe2O3 + 3CO= 2Fe + 3CO2, SUPPOSE THAT 1.64kg OF Fe ARE OBTAINED FROM A 2.62kg SAMPLE OF Fe2O3(ORE). ASSUMING THE REACTION IS COMPLETE, WHAT IS THE PERCENT PURITY OF THE Fe2O3 IN THE ORIGINAL SAMPLE?
April 17, 2011 by BECKY

chemistry
Fe2O3+ 3CO=2Fe+3Co2, suppose that 1.64kg of Fe are obtained from a 2.62kg sample of Fe2O3 (ore). assuming that the reaction goes to completion, what is the percent purity of the Fe2O3 in the original sample.
April 19, 2011 by becky

Chenmistry
Fe2O3 + 3C = 2Fe + 3CO How many grams of C are required to react with 2.50 moles of Fe2O3 ?
April 1, 2013 by Marcie

chemistry
how many grams of CO are needed to react with an excess of Fe2O3 to produce 201.1 g Fe? Fe2o3(s) + 3CO(g) -> 3CO2(g) + 2Fe(s)
April 28, 2013 by daniele

chemistry
how many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)
January 31, 2008 by Theodore

Chemistry
How many grams of CO are needed to react with an excess of Fe2O3 to produce 233.4 gFe? Fe2O3 (s) + 3CO (g) --> 3CO2 (g) + 2Fe (s)
December 11, 2011 by :)

chemistry
how many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)
March 29, 2012 by help please

Chemistry
How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)
May 17, 2012 by Shelly

chemistry
Fe2O3 + 3CO --> 2Fe + 3CO2 a 16.2 L sample of CO at 1.5 atm and 200 C is combind with 15.39 g Fe2O3. how many moles of CO are available for the reaction? what is the limiting reacta? How many moles of Fe are formed?
March 10, 2010 by hilde

Chemistry
Can you balance this equation please? Fe2O3 + CO yeilds Fe + CO2 Fe2O3 + CO ==> Fe + CO2 Rule: balance by changing coefficients. You may not change subscripts. Look at the Fe atoms. There are 2 Fe atoms on the left and only 1 on the right; therefore, we place a 2 in front ...
February 20, 2007 by mZ. YoU

Chemistry
How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.90g of Fe2O3 with enough carbon monoxide to produce iron metal? Fe2O3 + 3CO ---> 2Fe + 3CO2 dH=-24.8kJ How do you find q (of the 2Fe in kJ).
April 6, 2011 by Chris

Chem
Calculate the number of grams of Fe formed when 0.300kg of Fe2O3 reacts. Equation: Fe2O3+CO-->Fe+CO2 converted .300kg to 300g Balanced Fe2O3+3CO-->2Fe+3CO2 So I started by trying this: 300gFe2O3(1molFe2O3/159.687gFe2O3)...and then I don't know where I would go from there...
September 16, 2012 by Ezra

Chemistry
Iron metal is formed during the reduction of iron(III) oxide: Fe2O3 + 3CO 2Fe + 3CO2 When 24.3 kg of Fe2O3 react with 14.6 kg of CO and 7.8 kg of Fe are recovered, what is the percent yield for the reaction? Pls.. help I am having a hard time finding the answer. The wordings ...
April 13, 2011 by komal

stoichiometry
1.how many mole, Fe can be made from Fe2O3 by the use of 20 moles of carbon monoxide, CO in the following reaction? Fe2O3+ 3CO = 2Fe+ 3CO2 2. How manhy moles of H2O are produced when 2.75 moles of O2 are consumed if burning methyl alcohol, CH3OH, according to the following ...
April 6, 2013 by jace

Chemistry
Which element is oxidized in this reaction? Fe2O3+ 3CO-(arrow)2Fe+3CO2
October 5, 2009 by Rose

Thermochemistry
3CO(g)+ Fe2O3(s) --> 2Fe(s) + 3CO2(g) + 24.7 kJ. How much heat is released when 56 grams of CO react?
December 14, 2010 by Hannah

Chemistry
Given the balanced equation: a. Fe2O3+3C=2Fe+3CO: b. How many moles of Fe are produced when 1.36 moles of carbon monoxide are produced? c. How many grams of Fe is part b equal to? d. how many molecules of Fe are in part B
October 8, 2012 by Noel

Chemistry
Iron(III) oxide can be reduced by carbon monoxide. Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g) Use the following thermodynamic data at 298 K to determine the equilibrium constant at this temperature. Substance: Fe2O3(s) CO(g) Fe(s) CO2(g) ΔH f (kJ/mol): -824.2 -110.5 0 -393.5 &#...
March 31, 2011 by Bea

college
In the reaction Fe2O3 + 3CO 2Fe + 3CO2 How much CO is used to produce 112 grams of iron?
July 12, 2010 by Dillon

chemistry
In the reaction Fe2O3 + 3CO 2Fe + 3CO2 How much CO is used to produce 112 grams of iron?
July 13, 2010 by Dillon

chemistry
how much energy is required to convert 1.00 kg of iron III to atomic iron? Equation: Fe2O3 + 3CO ---> 2 Fe +3 CO2 delta H is 131kJ
February 8, 2012 by David

chemistry
Given: *Fe2O3(s)+3CO(s)-->2Fe(s)+3CO2(g)(delta h is -23kJ) *3Fe2O3(s)+CO(g)-->2Fe3O4(s)+CO2(g)(delta h is -39kJ) *Fe3O4(s)+CO(g)-->3FeO(s)+CO2 (delta h is 18kJ) Desired:FeO(s)+CO(g)-->Fe(s)+CO2(g) find delta h for the desired reaction. which reactions do i reverse ...
March 26, 2008 by tanisha

chemistry
How many moles of carbon monoxide are needed to react completely with 1.75 moles of iron oxide? based on this equation: Fe2O3(s)+3CO(g)--->2Fe(s)+3CO2(g)
April 11, 2011 by Jane

chemistry check
please check Write the balanced equation, with the enthalpy component, for the rusting process, given that Hf for iron and oxygen is 0 and Hf for ferric oxide is -826 kJ/mol. 4 Fe (s) + 3 O2 (g) --------> 2 Fe2O3 (s) You need to add the heat one of three ways. 4 Fe (s) + 3 ...
February 8, 2007 by key

Chemistry
When 84.8 g of iron(III) oxide reacts with an excess of carbon monoxide, iron is produced. Fe2O3(s) + 3CO(g) ==> 2Fe(s) + 3CO2(g) what is the theoretical yield of iron?
March 28, 2010 by Kim

Chemistry
Label the oxidizing agent and the reducing agent: a) P4(s) + 5O2(g) -> P4O10(s) b) Co(s) + Cl2(g) -> CoCl2(s) c) Fe2O3(s) + 3CO(g) -> 2Fe(s) + 3CO2(g) d) PbS(s) + 4H2O2(aq) -> PbSO4(s) + 4H2O(l) I never learned about oxidation numbers. Thanks!
September 3, 2008 by Yuval

Chemistry
In the reaction Fe^2O^3+3CO->2FE+3CO^2, what is the total number of moles of CO used to produce 112 grams of iron? Please explain step by step how to do this problem, thanks:)
March 6, 2013 by Unknownn

Honors Chemistry
Equation: Fe2O3 + 2Al ---> 2Fe + Al2O3. How many grams of Fe2O3 react with excess Al to make 475g Fe? Can you show me step by step how to do it? My book says the answer is 679g Fe2O3.
February 23, 2010 by Anan

Chemistry
1.) What are the equilibrium partial pressures of CO and CO2 if co is the gas present initially, at a partial pressure of .912 atm. Kp = 19.9 Fe2O3 + 3CO <--> 2Fe + 3CO2 I'm trying to find partial pressure of both CO and CO2 by calculating for "x" in the equilibrium problem
May 8, 2012 by Ali

Chemistry
4Fe + 3O2 -> 2Fe2O3 + 1.65E3 kJ C) what is the enthalpy change for the formation of 23.6 g of iron(iii) oxide? I'm trying to understand thermochemical reactions and stoichiometry, so could you please tell me if this is correct? And please explain the parts that I clearly ...
February 6, 2013 by A Canadian

Chemistry
4Fe + 3O2 -> 2Fe2O3 + 1.65E3 kJ C) what is the enthalpy change for the formation of 23.6 g of iron(iii) oxide? I'm trying to understand thermochemical reactions and stoichiometry, so could you please tell me if this is correct? And please explain the parts that I clearly...
February 6, 2013 by A Canadian

Chemistry
A 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the mass of Fe2O3(s) ...
March 18, 2012 by Riley

11th grade
so I have this problem and I dont know what numbers to multiple and whatnot. Can someone help me? This is the problem: 4000 g Fe2O3* 1mole Fe2O3/159.68 gFe2O3* 3mole CO2/1mole Fe2O3
December 2, 2010 by Jessi

Chemistry
I want to know the enthalpy change for this reaction which occurs in a blast furnace: Fe2O3(s) + 3C(s) --> 2Fe(l) + 3CO(g) You will need the heat of formation for CO, and ironIIIoxide, and the heatofmelting for iron. I suspect you have some temperature in mind also which ...
April 15, 2007 by Alice

chemistry
iron 3 oxide reacts with carbon monoxide according to the following equation: fe2O3+3Co-->2Fe+3Co2 a) how many moles of ions are produced when one mole of iron 3 oxide reacts b) calculate the volume of carbondioxide produced when one mole of iron 3 oxidereacts
September 6, 2010 by honeybee

Chemistry
4 FeS(s) + 7 O2(g) ==> 2 Fe2O3(s) + 4 SO2(g) 7.82 moles of FeS are required to produce 3.91 moles of Fe2O3 What is the maximum number of liters of Fe2O3(s) that can be made from 10.95 L of O2(g) and 18.64 L of FeS(s) at STP?
July 22, 2011 by Katie

Analytical chemistry
The iron in a 0.6656 g ore sample was reduced quantitatively to the +2 state and then titrated with 26.753 g of KMnO4 solution. Calculate the percent Fe2O3 in the sample. the mass i get for fe2o3 is too big, but i don't know how else to do this problem, someone please help :S ...
August 3, 2013 by Gloria

Chemistry
A sample weighing 3.064 g is a mixture of Fe2O3 (molar mass = 159.69) and Al2O3 (molar mass = 101.96). When heat and a stream of H2 gas is applied to the sample, the Fe2O3 reacts to form metallic Fe and H2O(g). The Al2O3 does not react. If the sample residue weighs 2.407 g, ...
October 29, 2012 by Chris

Analytical chemistry
I did the next problem, i don't have the results for it and i just want to know if i calculated the mass for Fe2O3 the right? A sample is a mixture of iron oxides (Fe2O3 and FeOOH). It's known that at 200C this reaction occurs: 2FeOOH(s)-> Fe2O3(s) + H2O(g) A 0.2564g ...
September 7, 2013 by Gloria

Chemistry
I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co? b) how many moles of CO2 can be produced from 15 moles of Fe2O3? c) what is the maximum amount (in grams) ...
April 9, 2008 by Kate

Chemistry
This isn't exactly a homework question, I'm just trying to understand the concept we learned today... So say we had: 4Fe + 3O2 → 2Fe2O3 + 1.65 x 10^3 kJ Does that mean for every 4 mol of Fe, 3 mol of O2, and 2 mol of Fe2O3 we have 1.65 x 10^3 kJ? And if I were to ...
February 6, 2013 by A Canadian

Chemistry
37.5 g of Fe2O3 is added to 240 cm^3 of HCl. The reaction occurs according to equation : 6HCl + Fe2O3 -> 2FeCl + 3H2O At the end of reaction, 5.5 g of Fe2O3 remain unreacted. Find A) calculate the molarity of HCl used B) calculate the mass of FeCl3 produced
June 28, 2014 by Lilo

Chemistry
A sample of iron weighing 15.0 g was heated with potassium chlorate (KClO3) in an evacuated container. The oxygen generated from the decomposition of KClO3 converted some of the Fe to Fe2O3. If the combined mass of Fe and Fe2O3 was 17.9g,calculate the mass of Fe2O3 formed and ...
August 22, 2013 by Francis

chemistry
I still do not understand how to figure out this problem yet? 6FeO3----->4Fe304+02 DELTA H=+ 392kj If 2.83 g of Fe2O3 decomposed according to the above reaction , how many kj of heat would be exchanged with the enviroment? chem - DrBob222, Thursday, October 15, 2009 at 11:...
October 15, 2009 by lauren

chem
One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron, is below. Fe2O3 + 3 CO 2 Fe + 3 CO2 Suppose that 1.86 103 kg of Fe are obtained from a 5.98 103 kg sample of Fe2O3. Assuming that the reaction goes to completion, what is the percent...
August 7, 2012 by Shawn

chemistry
how grams of oxygen can be produced from the decomposition of 100g KClO3? how much iron can be recovered from 25.0g of Fe2O3 how can be produced from 125g Ag2S Figure the precentage composition of the compound. For instance percent of Fe in Fe2O3 = 2*atomicmassFe/(...
February 26, 2007 by Beautiful

Chemistry
A 2.00g sample of Fe3O4 is reacted with with 8.00g of O2 to produce Fe2O3. a) What mass of Fe2O3 will be produced? b) What mass of Fe2O3 will actually be produced if the percentage yield for reaction is 85% produced?
August 12, 2014 by Paul

Chemistry
the density of Fe2O3 is 5.343g cc. What is the mass volume concentration of iron in Fe2O3
October 16, 2013 by jay

Chemistry ( stoichiometry )
How many grams of iron can be made from 16.5g of Fe2O3 by the following equation: Fe2O3 + 3 H2 -----> 2 Fe + 3 H2O.
November 10, 2010 by Sevi

science
How many grams of CO are needed to react with an excess of Fe2O3 to produce 558 g Fe? The equation for the reaction is: Fe2O3(s) + 2 CO(g) → 3 CO2(g) + 2 Fe(s)
January 11, 2011 by christopher

Chemistry
Fe2O3(s) + 2Al(s)-> 2Fe(l) + Al2O3(s) What is the theoretical yield of iron if we begin the reaction with 10.5 g of Al (assume an excess of Fe2O3)
February 16, 2014 by tgt

Chemistry
How many grams of Fe2O3 are there in 0.250 mole of Fe2O3?
April 8, 2011 by Anonymous

Chemeistry
when 4.50 g of fe2o3 is reduced with excess h2 in a furnace, 2.6 g of iron metal is recovered. What is the percent yield when molar mass of Fe2O3 is 159.7
March 25, 2013 by Sammy

stoichiometry
How many grams of Fe is needed to make 8 g of FeO3. I was given Fe + H2O ---> H2 + FeO3. I balanced it: 2Fe +3H2O -----> 3H2 +Fe2O3. divided 8 by 160 (sum of parts of Fe2O3 got .05 multiplied .05 times 2 because ratio was 2:1 and got 0.1 multiplied 0.1 times 56 (value of...
December 1, 2006 by CJ

chemistry (grade 12)
how much heat will be liberated if 37.8 g of Fe2O3 is allowed to react with 18.7 g of aluminum. Fe2O3(s) + 2Al(s)--> Al2O3(s) + 2Fe(s) + 851.5kJ
February 15, 2012 by Rose Bud

Chemistry :(
Given that: 2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821 kJ/mol Calculate the standard enthalpy change for the following reaction: 2Al(s)+Fe2O3(s)--->2Fe(s)+Al2O3(s) _______kJ PLEASE EXPLAIN IM SOOO ...
October 31, 2010 by Lucy

Chemistry-College
Given that: 2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821 kJ/mol Calculate the standard enthalpy change for the following reaction: 2Al(s)+Fe2O3(s)--->2Fe(s)+Al2O3(s) _______kJ
October 31, 2010 by Lucy

chemistry*
Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is given below. Fe2O3(s) + 2 Al(s) -->2 Fe(l) + Al2O3(s) What masses of iron(III) oxide and aluminum must be used to ...
April 25, 2010 by Anonymous

Chemistry
Please explain the answer. 1. Which statement about this reaction is correct? 2Fe(s)+3CO2(g)--->Fe2O3(s)+3CO(g) delta H = 26.6 kJ A. 26.6 kJ of energy are released for every mole of Fe reacted B. 26.6 kJ of energy are absorbed for every mole of Fe reacted C. 53.2 kJ of ...
November 11, 2013 by Anonymous

CHEMISTRY
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. 26.6 kJ of energy are released for every mole of Fe reacted B. 26.6 kJ of energy are absorbed for every mole of Fe reacted C. 53.2 kJ of energy ...
November 11, 2013 by Anonymous

chemistry
6Na+Fe2O3=3Na2O+2Fe if Interact 100g of Na with 100g of Fe2O3,Calculate: - The resulting mass of iron?
February 4, 2014 by Anonymous

chemistry
Suppose that 1.78 x 10^3 kg of Fe are obtained from a 5.80 x 10^3 kg sample of Fe2O3. Assuming that the reaction goes to completion, what is the percent purity of Fe2O3 in the original sample?
January 31, 2012 by Joe

chemistry,again
3 Fe2O3 + 1 CO → 2 Fe3O4 + 1 CO2 how many grams of Fe2O3 are needed to prepare 255 g of Fe3O4? a. 118 g b. 552 g c. 264 g d. 383 g
April 7, 2008 by Sarah

Chemistry (Enthalpy)-College
Given that: 2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821 kJ/mol Calculate the standard enthalpy change for the following reaction: 2Al(s)+Fe2O3(s)--->2Fe(s)+Al2O3(s) _______kJ
October 31, 2010 by Lucy

AP chem!!!
Iron ore consists mainly of iron III oxide. When iron III oxide is heated with an excess of coke(carbon), iron metal and carbon monoxide are produced. Assume that even if an excess of coke is not present that the reaction proceeds as described. A)write a balanced equation for ...
October 15, 2006 by Nicole

College Chem.
How much energy is evolved during the reaction of 48.7 g of Al, according to the reaction below? Assume that there is excess Fe2O3. Fe2O3(s) + 2 Al(s) → Al2O3(s) + 2 Fe(s), ΔHrxn = -852 kJ
September 1, 2010 by Brandee

College Chem.
How much energy is evolved during the reaction of 48.7 g of Al, according to the reaction below? Assume that there is excess Fe2O3. Fe2O3(s) + 2 Al(s) → Al2O3(s) + 2 Fe(s), ΔHrxn = -852 kJ
September 1, 2010 by Brandee

Chemistry
in a blast furnace, iron(III) oxide is used to produce iron by the following (unbalanced) reaction: Fe2O3 + CO = Fe + CO2 a. if 4 kg Fe2O3 are available to react, how many moles of CO are needed?
May 18, 2012 by RS

chemistry
how many atoms of iron are in .0750 moles of the compound Iron(III) oxide? Fe2O3 my guess is .375 am I right .750/2=.375 No, don't guess. The molar mass of Fe2O3 is approximately 159. You should look up the molar mass and use the exact number. 159 grams (1 mol) Fe2O3 will ...
May 14, 2007 by mike

Chemistry!!
How do I go about doing this question? How much heat energy is involved when 5.58g of Fe metal reacts with excess oxygen to produce Fe2O3? Do you need the equation, and if so, what would tha be? Fe + O2 > Fe2O3? I don't think that is right though. And also, do you find ...
November 22, 2008 by Lulu

Chemistry
I am super confused when it comes to these types of questions! Can someone check my work? None of my answers matched those of my teacher when she read them this morning for last night's homework. Please help! 1. Consider the following equilibrium reaction: 2PH3(g) <-> 2P...
May 18, 2009 by Samantha

Chemistry
9. Iron is produced by reducing iron(III) oxide with CO: Fe2O3 + 3 CO → 2 Fe + 3 CO2 ∆H = 23 kJ . How much heat is produced when 1.00 kg of Fe2O3 are reduced?
November 3, 2011 by Ashley

chemistry
Consider the following reaction. 4Fe + 3O2=2Fe2O3 a. How many moles of O2 are required to react completely with 29.8 mg of Fe? 4.00 x 10^-4 moles O2 b. How many grams Fe2O3, are produced from the complete reaction of 17.8 g of Fe? 25.4 g Fe2O3
February 14, 2012 by krystal

Chemistry
Please help! I don't understand these questions at all. :( Fe2O3(s) + 2Al(s) -> Al2O3(s) + 2Fe(l) If 0.50 mol of Fe is produced in 10 secs, what is the rate of consumption of Fe2O3 in mol/s? A. 5.0 x 10^-2 mol/s B. 2.5 x 10^-2 mol/s C. 1.0 x 10^-1mol/s D. 5.0 mol/s Thank you!
October 16, 2014 by Nancy

chemistry
in a blast furnace, Iron(III) oxide is used to produce iron by the following unbalanced reaction....Fe2O3(s) + CO(g)-->Fe(s)+ CO2(g) if 4.00 kg Fe2O3 are available to react how many moles of CO are needed? how many moles of each product are formed? help please how do i ...
November 5, 2009 by lynda smith

Chem
f 147 grams of FeS2 is allowed to react with 88 grams of O2 according to the following unbalanced equation, how many grams of Fe2O3 are produced? FeS2 + O2 → Fe2O3 + SO2
September 19, 2010 by Valarie

chemistry
What is the limiting reagent for 6HCl + Fe2O3 = 2FeCl3 + 3H2O ? 6HCl has 18.44 moles and Fe2O3 has 2.91 moles. Also how many moles would FeCl3 produce?
February 25, 2013 by Amber

chemistry
What is the limiting reagent for 6HCl + Fe2O3 = 2FeCl3 + 3H2O ? 6HCl has 18.44 moles and Fe2O3 has 2.91 moles. Also how many moles would FeCl3 produce?
February 25, 2013 by Amber

chemistry
The reaction between solid sodium and iron(III) oxide is one in a series of reactions that inflates an automobile airbag. 6 Na(s) + Fe2O3(s) 3 Na2O(s) + 2 Fe(s) If 171.0 g Na and 213.5 g Fe2O3 are used in this reaction, what is the mass of excess reactant that remains after ...
February 7, 2010 by tg

Chemistry
The reaction between solid sodium and iron(III) oxide is one in a series of reactions that inflates an automobile airbag. 6 Na(s) + Fe2O3(s) 3 Na2O(s) + 2 Fe(s) If 171.0 g Na and 213.5 g Fe2O3 are used in this reaction, what is the mass of excess reactant that remains after ...
February 9, 2010 by tdb

chemistry
se the information provided to determine ΔH°rxn for the following reaction: ΔH°f (kJ/mol) 3 Fe2O3(s) + CO(g) → 2 Fe3O4(s) + CO2(g) ΔH°rxn = ? Fe2O3(s) -824 Fe3O4(s) -1118 CO(g) -111 CO2(g) -394
April 27, 2011 by yr

Chemistry - Equations
I am a student in the ninth grade and I need help with the following problems because I do not understand how to do them. I appreciate your help and thanks once again. 7. in 2CO(grams) + O2(grams) => 2CO2(grams), what is the ratio of moles of oxygen used to moles of CO2? 9...
January 31, 2008 by Theodore

chemistry
Thermite mixtures are used for certain types of weldings and the thermite reaction is highly exothermic. Given delta H= -852 KJ/mol, 1 mole of granular Fe2O3 and 2 moles of granular aluminum are mixed at room temperature and the reaction is initiated. the liberated heat is ...
July 27, 2013 by sharmaine

chemistry
Thermite mixtures are used for certain types of weldings and the thermite reaction is highly exothermic. Given delta H= -852 KJ/mol, 1 mole of granular Fe2O3 and 2 moles of granular aluminum are mixed at room temperature and the reaction is initiated. the liberated heat is ...
July 27, 2013 by sharmaine

Chemistry
A 0.5962g sample of iron ore is dissolved in acid producing Fe3+. Through a series of reactions, the iron precipitates as the Fe(OH)3. The precipitate is heated, forming solid Fe2O3. What is the mass % of iron in the sample if the analysis produced 0.3210g Fe2O3?
December 6, 2010 by Chris

Thermochemistry
My question is more conceptual. It is expressed in a series of two problems: What energy change occurs when 1.2 moles of methane combust with an enthalpppy change of -434 KJ? CH4+2O2 TO CO2+2H20 I understand it is simply the moles of mthane times the enthalpy change yet I am ...
March 19, 2013 by Sean

physical science
When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3. Show your work.
January 7, 2013 by Megan

chemistry
given; how many grams of fe2o3 can be converted to fe3o4 by 14 grams of co?
March 20, 2012 by Anonymous

11th grade
A 36.5 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 10 grams. What was the percent iron in the sample of ore?
September 15, 2010 by Anonymous

chemistry
A 28.6 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 10.1 grams. What was the percent iron in the sample of ore?
August 30, 2012 by Nick

chemistry
A 46.9 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 11.6 grams. What was the percent iron in the sample of ore? Answer in units of %
August 30, 2011 by Anonymous

ap chemistry
A 25.2 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 12 grams. What was the percent iron in the sample of ore? Answer in units of %
September 10, 2012 by cheri

AP Chemistry
A 40.3 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 10.5 grams. What was the percent iron in the sample of ore? Answer in units of %
August 30, 2013 by Gabriella

AP Chemistry
A 44.6 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 10.1 grams. What was the percent iron in the sample of ore? Answer in units of %
September 2, 2013 by Anonymous

Chemistry
A 0.5962g sample of iron ore is dissloved in acid producing Fe3+. Though a series of reactions, the iron precipitates as the Fe(OH)3. The precipitates is heated, forming solid Fe2O3. What is the mass % of iron in the sample if the analysis produced 0.3210g Fe2O3?
December 10, 2010 by P

Chemistry
Calculate the enthalpy change (delta H) in kJ for the following reaction. 2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s) use enthalpy changes for the combustion of aluminum and iron. 2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ 2Fe(s) + 3/2 O2(g) ==> Fe2O3 (s) Delta...
May 23, 2010 by Kim

Chemistry
Calculate the enthalpy change (delta H) in kJ for the following reaction. 2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s) use enthalpy changes for the combustion of aluminum and iron. 2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ 2Fe(s) + 3/2 O2(g) ==> Fe2O3 (s) Delta...
May 23, 2010 by Kim

chemistry
An ore contains Fe3O4 and no other iron. The iron in a 27.07 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 21.9 grams. What was the percent Fe3O4 in the sample of ore?
August 30, 2012 by Nick

AP chem
A 37.2 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 11.1 grams. What was the percent iron in the sample of ore? Answer in units of percent
August 25, 2013 by Anonymous

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