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how many grams of the mixed oxide, Fe3O4 are formed when 6.00 g of O2 react with Fe according to 3Fe+2O2=Fe3O4

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CHEM
How many grams of water and iron must react to produce 543 g of iron oxide, Fe3O4? 3Fe + 4H2O---> Fe3O4 + 4H2

Chemistry
Fe3O4 reacts with CO according to the equation Fe3O4 + 4CO => 4CO2 + 3Fe If 478.9 g Fe3O4 is reacted with excess CO, what mass of CO2 will be produced?

chemistry
Iron and oxygen gas can react to form the magnetic oxide of iron Fe3O4. How many grams of Fe3O4 can be made from 13.2 g of O2?

Chemistry
Iron and oxygen gas can react to form the magnetic oxide of iron Fe3O4. How many grams of Fe3O4 can be made from 42.3 g of Fe?

Science
What mass of iron metal can be obtained from the reaction of 45.6kg Iron (III) oxide Fe3O4 with carbon monoxide CO as given in the following equation? Fe3O4 + 4CO = 3Fe + 4CO2

Science
What mass of iron metal can be obtained from the reaction of 45.6kg Iron (III) oxide Fe3O4 with carbon monoxide CO as given in the following equation? Fe3O4 + 4CO = 3Fe + 4CO2

science
What mass of iron must react to produce 3600 kJ of energy? 3Fe+2O2 →Fe3O4 ∆H=-1120kJ

chemistry
For each reaction, calculate the moles of product (in parentheses) when 2.00 moles of each reactant is used A: 2SO2 + O2 = 2SO3 (SO3) B: 3Fe + 4H2O = Fe3O4 + 4H2 (Fe3O4) C: C7H16 + 11O2 = 7CO2 + 8H2O (CO2)

basic chemistry
Fe3O4 + 4 H2 -> 3 Fe + 4 H2O What mass (g) of Fe3O4 would be needed to react with 1.38 x 10^3 mol H2?

Ap Chemistry Help
3.) One method used in the eighteen century to generate hydrogen was to pass steam through red-hot steel tubes. The following reaction takes place: 3Fe(s)+4H20(g)--->Fe3O4(s)+4H2(g) 2. What mass of iraon will react with 500.0 L of steam at 25 degrees C and 1.00 atm pressure...

gen chem
What mass of Fe3O4 would be needed to react with 1.38 x 103 mol H2? Fe3O4 + 4 H2 -> 3 Fe + 4 H2O

chemistry
3.) One method used in the eighteen century to generate hydrogen was to pass steam through red-hot steel tubes. The following reaction takes place: 3Fe(s)+4H20(g)--->Fe3O4(s)+4H2(g) 1. What volume of hydrogen at STP can be produced by the reaction of 6.28 g of iron? 2. What...

Chemistry
Consider this reaction: Fe3O4(s)+4CO(g) --> 4CO2(g)+3Fe(s). If you begin with 0.03820 moles of iron oxide and 0.120 moles of carbon monoxide, how many grams of iron can be formed? Indicate which reactant is the limiting reactant. 0.03820 x 3/1= 0.1146 moles x 55.8 g 0.120 x...

Chemistry
Magnetite, an iron ore with formula Fe3O4, can be reduced by treatment with hydrogen to yield iron metal and water vapor. (a) Write the balanced equation. (Use the lowest possible coefficients.) 1Fe3O4(s) + 4H2(g)-> 3Fe(s) + 4H2O(g) (b) This process requires 36 kcal for ...

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

Chemistry
how many moles of O2 would be needed to produce 1120.5 kJ of heat from the reaction: 3Fe + 2O2 yields Fe3O4+ 1120.5 kJ I got 627771.33 which I thought seemed a bit too high. My proportion was 1120.5=2 O2/1120.5. Thanks again.

chemistry
For the reaction at equilibrium: 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), removing some of the product, Fe3O4(s), would: Answer A. Increase the value of the equilibrium constant, K B. No change C. Decrease the value of the equilibrium constant, K D. Shift the equilibrium to the ...

8th Grade Science
Label these reactants and products: 3Fe + 2 O2> Fe3O4

chemistry
what type of reaction occurs Fe3O4 + 4H2 → 3Fe + 4H2O

CHEMISTRY PLEASE!!! ( I NEED HELP ASAP)
Consider the reaction H3PO4 + 3NaOH → Na3PO4 + 3H2O. How much Na3PO4 can be prepared by the reaction of 3.43 g of H3PO4 with an excess of NaOH? For the reaction ?Fe+?H2O → ?Fe3O4 +?H2, what is the maximum amount of Fe3O4(231.533 g/mol) which could be formed from 12...

Chemistry - Le Chateli.
3Fe(s) + 4H2O(g) <-> Fe3O4(s) + 4H2(g) What happens when Fe(s) is added? Would the reaction shift right?

Chemistry
I have 3 Fe (s) + 4 (H2O) (g) reacts with FeO4 (s) + 4 H2 (g) How many g of steam and iron must react to produce 375 g of magnetic oxide Fe3O4 ? I need help trying to figure out how to write the equation please

chem
Fe3O4(s) + C(s) > CO2 + Fe Balance the chemical reaction and calculate how many moles of Fe3O4 must be reacted to produce 440 gr CO2 (the > is an arrow)

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?

Chemistry
An ore contains Fe3O4 and no other iron. The iron in a 51.98 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 32.8 grams. What was the percent Fe3O4 in the sample of ore? Answer in units of %.

Ap Chemistry
An ore contains Fe3O4 and no other iron. The iron in a 60.67 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 36.1 grams. What was the percent Fe3O4 in the sample of ore? Answer in units of %

AP Chemistry
An ore contains Fe3O4 and no other iron. The iron in a 40.93 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 30.7 grams. What was the percent Fe3O4 in the sample of ore? Answer in units of %

chemistry
An ore contains Fe3O4 and no other iron. The iron in a 65.46 gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 37.9 grams. What was the percent Fe3O4 in the sample of ore? Answer in units of %

chemistry
Fe3O4 can be reduced by treatment with hydrogen to yield iron metal and water vapor write the balanced equation. this process required 36kcal for every 1.00 mol of Fe3O4 reduced. how much energy in kcal is required to produce 64g of iron. how many grams of hydrogen are needed ...

chemistry
Use the reaction shown to calculate the mass of iron that must be used to obtain 0.500 L of hydrogen at STP: 3Fe(s) + 4H2O(l) pr029-1.jpg Fe3O4(s) + 4H2(g

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 ...

Heat of Formation
When 10.00 g of iron is burned in O2(g)to form Fe3O4 (s) , enough heat is generated to raise the temperature of 784 g of water from 18.0 C to 38.0 C. Calculate the heat of formation of Fe3O4 (s) under these conditions in kJ/mol.

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

Chemistry
If 609.5 grams of vanadium (II) oxide, VO, and 832 grams of iron(III) oxide, Fe2O3, are put into a container and allowed to react according to the equation above, which substance(s) and how many grams of each would be present in the container after the reaction is complete?

AP CHEM
I have multiple... 1) If a metal ore contains 23.1% pure metal, how many pounds of pure metal can be obtained from 38 pounds of metal ore? Answer in units of pounds. 2) For the reaction 3 F2 + Cl2 → 2 ClF3 , what is the maximum amount of ClF3 (92.4482 g/mol) which could ...

chemistry
given; how many grams of fe2o3 can be converted to fe3o4 by 14 grams of co?

chemistry
a sample of iron are is known as Fe3O4. A 50 gram of sample contain 26 gram of Fe. Determine % yield Fe3O4 In sample

Chemistry
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? Answer in units of g. Consider the reaction H3PO4 + 3NaOH → Na3PO4 + 3H2O. How much Na3PO4 can be prepared by the reaction of...

science chemical reactions
which option shows a coefficient on the product side in this chemical equation? 3Fe +4H20 -->Fe30 +4H2 A. the 3 in Fe and 4 in H2O B.the 2 in H2O the 3 and 4 in Fe3o4 and the 2 in H2 C.the 4 in H2 D.the 3 in Fe and 4 in H2O and 4 in H2

Science
Calculate the mass of iron, which will be convert, into its oxide(Fe3O4) by the action of 18g of steam on it (A)21g (B)42g (C)64g (D)51g

Chemistry
How many grams of iron are there in a sample of Fe3O4 which weighs 8.338 g?

Chemistry
Reversible equilibrium: what would the effect be by adding hydrogen gas to: 3Fe(s)+4H20(i)<==>Fe3O4(s)+4H2(g) and... effect of adding chlorine gas to: P4(s)+6Cl2(g)<===>4PCl3(i)

Chemistry
is Fe3O4 + 4H2 = 3Fe + 4H2O spontaneous at 298 K? Delta H system= 149.8 kj/mol Delta S system= 610.0 kj/mol

Chemistry
Hydrogen is generated by passing hot steam over iron, which oxidizes to form Fe3O4, in the following equation: a. if 625 g of Fe3O4 is produced in the reaction, how many moles of hydrogen are produced at the same time? b. how many moles of iron would be needed to generate 27 g...

Chemistry
Consider the reaction 3Fe(s) + 4H2O(g) ¨ 4H2(g) + Fe3O4(s). If the volume of the container is reduced, 1. more Fe(s) is produced. 2. no change occurs. 3. more H2O(g) is produced. 4. more H2(g) is produced. 5. the equilibrium constant increases.

chemistry
An ore contains Fe3O4 and no other iron. The iron in a 54.6-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 21.3 g. What was the mass of Fe3O4 in the sample of ore? Answer in units of g

AP Chemistry
An ore contains Fe3O4 and no other iron. The iron in a 36.5-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 26 g. What was the mass of Fe3O4 in the sample of ore? Answer in units of g

AP Chemistry
An ore contains Fe3O4 and no other iron. The iron in a 39.3-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 10.6 g. What was the mass of Fe3O4 in the sample of ore? Answer in units of g

stoichiometry
An ore contains Fe3O4 and no other iron.The iron in a 39.5-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 26.7 g. What was the mass of Fe3O4 in the sample of ore? Answer in units of g.

AP Chem
An ore contains Fe3O4 and no other iron. The iron in a 51-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 g. What was the mass of Fe3O4 in the sample of ore?

chemistry
An ore contains Fe3O4 and no other iron. The iron in a 38.8-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 25 g. What was the mass of Fe3O4 in the sample of ore?

chemistry
Given the following reactions Fe2O3(s) + 3CO (s) → 2Fe (s) + 3CO2(g)ΔH =-28.0 kJ 3Fe (s) + 4CO2(s) → 4CO (g) +Fe3O4(s) ΔH = +12.5 kJ the enthalpy of the reaction of Fe2O3 with CO 3Fe2O3(s) + CO (g) → CO2(g) + 2Fe3O4(s) is __________ kJ

Chemistry
Calculate the percent yield of iron if 950 g of Fe3O4 underwent the reaction shown in the chemical equation below and 533 g of Fe was isolated from the reaction mixture. Fe3O4 (s) + 2 C(s) ----> 2 CO2 (g) + 3 Fe(s) 1). 25.9% 2). 77.5% 3). 56.1% 4). None of the above. Based ...

Chemistry
Magnesium reacts with oxygen to form magnesium oxide according to the following equation: 2Mg(s) + O2(g) ==> 2MGO(s) If 0.81 grams of magnesium oxide are formed, how many grams of oxygen reacted?

chemistry
An ore contains Fe3O4 and no other iron. The iron in a 38.9-gram sample of the ore is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 12.5 g. What was the mass of Fe3O4 in the sample of ore? Please show all work, not just the ...

Chemistry
A compound of the element A and oxygen has a mole ratio of A:O=2:3. If 8.0 grams of the oxide contains 2.4 grams of the oxygen, a. What is the atomic weight of A? b. What is the weight of one mole of the oxide? c. What theoretical weight of the oxide is formed when 28 grams of...

chemistry
If 45.3 grams of aluminum react with an excess of oxygen, as shown in the balanced chemical equation below, how many grams of aluminum oxide can be formed? 4Al + 3O2 2Al2O3

chemistry
Concerning the following reaction at equilibrium: 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), increasing the concentration of the Fe(s) would: Answer A. Shift the equilibrium to the right B. Shift the equilibrium to the left C. No change D. Increase the value of the equilibrium ...

Chemistry
How many grams of iron can be recovered from 11.8 kg Fe3O4? I tried to multiply 11.8 kg by the percent composition of iron, but that didn't work.

Science
Chromium is produced by reacting its oxide with aluminum. If 76 g of Cr2O3 and 27 g of Al completely react to form 51 g of Al2O3, how many grams of Cr are formed?

fountain of knowledge international academy
A metal x with relative atomic mass of 56forms an oxide with formul X2O3 .How many grams of the metals will combine with 10g of oxygen Ethane burns completely in oxygen according to the equations below C2H6+7¡2O2~2CO +3H2O what is the amount in moles of carbon (iv)oxide will ...

Chemistry
Nitrogen and oxygen can react directly with one anotheer to produce nitrogen dioxide according to N2(g) + 2O2(g) --> 2NO2(g) The reaction may also be imagined to take place by first producing nitrogen oxide N2(g) + O2(g) --> 2NO(g) which then produces NO2 2NO(g) + O2(g...

chemistry
When 21.29 g of element A react completely with 58.37 g of E, compound A2E is formed. When 5.41 g of A react with 32.36 g of G, compound AG is formed. If elements E and G react to form EG3, what mass in grams of G is required to react with 11.94 g of E? The molar mass of E is ...

stoichiometry
Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25 moles of oxygen gas react with an excess of ...

Science
Thermite is a mixture of iron(III) oxide and aluminum powders that is used in some countries to weld railroad tracks. It is a spectacular reaction to yield solid aluminum oxide that floats on the molten iron. When cooled, the iron is ground smooth and even with the rest of the...

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...

Chemistry
How do I solve this problem? According to the following reaction, how many grams of mercury(II) oxide are needed to form 22.4 grams of oxygen gas? mercury(II) oxide (s) mercury (l) + oxygen (g)grams mercury(II) oxide

Physical Science
11. Chromium is produced by reacting its oxide with aluminum. If 76g of Cr2O3 and 27g of Al completely react to form 51g of Al2O3, how many grams of Cr are formed?

Chemistry
I'm doing chemical equilibrium, and there's a question in my lecture notes. Can someone check my answers and tell me if i'm right or wrong? Thanks! The Kc expression for this reversible reaction: 3Fe(s) + 4H2O (g) --><-- Fe3O4(s) + 4H2 (g) is [H2]^4 / [H2O]^4 Am I ...

chemistry
According to the following reaction, how many grams of zinc hydroxide will be formed upon the complete reaction of 29.8 grams of water with excess zinc oxide? ZnO (s) + H2O (l) Zn(OH)2 (aq)

chemistry - decomposition of water(help)
Hydrogen is a very appealing fuel, in part because burning it produces only non-polluting water. One of the challenges that researchers face in making hydrogen fuel a reality is how to produce hydrogen economically. Researchers are investigating methods of producing hydrogen ...

Chemistry
Can you tell me if these are right please? When 2.50g of copper reacts with oxygen the copper oxide product has a mass of 2.81g. What is the simplest formula of the copper oxide. I got Cu2O (copper (I) oxide). Aluminum and oxygen gas react to produce aluminum oxide. A.) write ...

Chemistry
1. Iron oxide and carbon monoxide react according to the following equation . Identify which reactant is limiting and which is excess if 43.5 grams of Fe2O3 reacts with 43.5 grams of CO Fe2O3 + 3CO2 --> 3CO2 + 2Fe 2. Calculate the percent yield of Carbon dioxide if 20.0 ...

chemistry
how many grams of solid calcium oxide must react with excess water to liberate the same quantity of heat as does the combustion of 24.4 l of methane gas (CH4), measures ar 24.7 c and 753 torr? CaO +H2O --> Ca(OH)2 Delta H = -65.2 KJ CH4 + 2O2 --> CO2 +2H20 Delta H=-890.3...

Chemistry H
For the decomposition of aluminum oxide at 35 celsius and atm, what volume of oxygen gas will be produced if 2.77 grams of the oxide react?

Chemistry
Zinc and sulfur react to form zinc sulfide according to the equation Zn+S=>ZnS a) How many grams of ZnS will be formed? b) How many grams of the excess reactant will remain after the reaction is over?

chem
calculate the delta H for 3 Fe(s) + 4 CO2(g) ¨ 4 CO(g) + Fe3O4(s)

Chemistry
iron metal & oxygen combine to form magnetic oxide of iron, Fe3O4. How many mols of iron can be converted to magnetic by 8.80 mols of pure oxygen?

Chemistry
According to the following reaction, how many moles of water will be formed upon the complete reaction of 22.6 grams of hydrochloric acid with excess iron(III) oxide?

chemistry
what mass of Fe3O4 would conatin 1.85*10^21 atoms of Fe?

chemistry
At 900 degrees C, Kc for the reaction is 5.1. if .050 mole of H20 and .100 mole of Fe are placed in a 1L container at 900 degrees C, how many grams of Fe3O4 are present at equilibrium?

Chemistry 130
Will someone let me know if I did these correct? 1. Rank the following in order of increasing radius based on their positions on the periodic table: S, S-2, Cl a. S, S-2, Cl b. S-2, Cl, S c. Cl, S, S-2 d. Cl, S-2, S e. S, Cl, S-2 I believe it's C. Cl, S, S-2 Is that correct, ...

Chemistry
CH4 + 2O2 --> CO2 + 2H2O a. How many grams of methane are needed to produce 1.5 X 10^-2 grams of carbon dioxide? b. How many grams of oxygen are needed to react to form the 1.5 X 10^-2 grams moles of carbon dioxide?

Chemistry
CH4 + 2O2 --> CO2 + 2H2O a. How many grams of methane are needed to produce 1.5 X 10^-2 grams of carbon dioxide? b. How many grams of oxygen are needed to react to form the 1.5 X 10^-2 grams moles of carbon dioxide?

Chemistry
CH4 + 2O2 --> CO2 + 2H2O a. How many grams of methane are needed to produce 1.5 X 10^-2 grams of carbon dioxide? b. How many grams of oxygen are needed to react to form the 1.5 X 10^-2 grams moles of carbon dioxide?

Chemistry
Calcium oxide can be prepared by heating calcium metal in oxygen according to the reaction: 2Ca+ O(2) --> 2CaO. How many grams of calcium would be needed to produce 15.0 grams of calcium oxide?

chemistry 121
3fe+H2O----Fe3O+4H2 how many grams of steam and iron mist reat to produce 375g of magnetic iron oxide

chemistry
 If we combine nitrous oxide (NO, laughing gas) with oxygen (O2) we produce nitrogen dioxide (NO2) according to the following reaction: 2NO + O2→ 2NO2 How many grams of NO2 will be produced when 5.00 moles of NO react?

Chemistry
A chemist reacts 112 g of iron with 72 g of water. State which reactant is the limiting reagent. Calculate what is the maximum yield in grams of Fe3O4 that could be produced in this reaction. For the substance that is not the limiting reagent, calculate the amount in excess.

chem
How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

chemistry
How much Fe3O4 is produced when 50g of Fe is reacted with exess water vapor

Chemistry
. Okay 2HgO turns into 2hg + O2. What mass of Co2 can be produced from 25.0g of Fe3O4 ?

Chemistry
When 28g calcium reacts with 25 grams oxygen, how many grams calcium oxide form? I have 2Ca+ 2O2= 4CaO its is not working. Stoichemistry. I have the Ca as the reactant that is limiting? Please help.

chemistry
how many grams of ammonia (NH3) will react with 27.8 grams of nitric oxide (NO)? 4NH3 + 6NO d 5N2 + 6H2O

science
iron (III) oxide is formed when iron combines with oxygen in the air. how many grams of Fe2O3 are formed when 16.7g of Fe reacts completely with oxygen? 4Fe(s) + 3O2(grams) => 2Fe2O3(s)

chem-repost
How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

Chemistry
If 23.2 grams of ammonium nitrite react to form 10.1 grams of nitrogen, how many grams of water must simultaneously be formed?

Chemistry
16.7 grams of chlorine gas are allowed to react with with 3.31 grams of water What is the maximum amount of hydrochloric acid that can be formed in grams

Chemistry
if 50 grams of sodium hydroxide mixed with 25 grams of hydrochloric acid how many grams of salt can be formed?

Chemistry
16.7 grams of chlorine gas are allowed to react with with 3.31 grams of water What is the maximum amount of hydrochloric acid that can be formed in grams. What is the maximum amount of hydrochloric acid that can be formed? grams What is the FORMULA for the limiting reagent? ...

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