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April 19, 2014

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

Number of results: 19,533

chemistry
How many gramd of the mixed oxide,Fe3O4,are formed when 6.00g of O2 react with Fe according to 3Fe+2O2--Fe3O4 A)43.4 B)86.8 C)174 d)21.7
Monday, September 1, 2008 at 12:55pm by titti

chemistry
1.85E21 atoms Fe/3 = ? molecules Fe3O4. ?molecules Fe3O4 x (1/6.02E23) = ? mols Fe3O4. ? mols Fe3O4 x (molar mass Fe3O4/1 mol) = grams Fe3O4.
Saturday, February 23, 2013 at 12:46pm by DrBob222

CHEM
How many grams of water and iron must react to produce 543 g of iron oxide, Fe3O4? 3Fe + 4H2O---> Fe3O4 + 4H2
Monday, August 3, 2009 at 9:28pm by Christian

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 ...
Tuesday, December 13, 2011 at 7:44am by Anne

AP Chemistry
Not sure how to be clearer. From the formula, the mole amount of iron in the magnetite sample is three times the mole amount of iron(II,III) oxide. This amount is the mass of magnetite divided by its molar weight. n[Fe] = 3 m[Fe3O4]/w[Fe3O4] The amount of iron in the converted...
Friday, August 30, 2013 at 7:31pm by Graham

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?
Wednesday, May 5, 2010 at 8:52pm by Danny

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)
Thursday, January 31, 2008 at 8:40pm by cambell

Chemistry
For the following reaction, 20.8 grams of iron are allowed to react with with 4.82 grams of oxygen gas. iron (s) + oxygen (g) iron(II) oxide (s) What is the maximum amount of iron(II) oxide that can be formed? grams What is the FORMULA for the limiting reagent? What amount of ...
Saturday, December 4, 2010 at 4:05pm by Austin Jekins

8th Grade Science
Fe is Iron O2 is oxygen Fe3O4 is Iron Oxide or Ferrous ferric oxide
Tuesday, December 11, 2012 at 10:40am by Praphul

Holy Nsmr
If 3 grams of magnesium consume 2 grams of oxygen while burning, how much oxide will be formed?
Thursday, October 6, 2011 at 5:41pm by Tommy

Chemistry
The easy way to do it is as follows: 32.8g x (2*molar mass Fe3O4/3*molar mass Fe2O3) = g Fe3O4. Then (g Fe3O4/51.98)*100 = %Fe3O4
Sunday, October 3, 2010 at 9:18pm by DrBob222

Chemistry
in the reaction of aluminium and iron (III) oxide to form iron and aluminium oxide, H-850 kJ. how many grams of aluminium oxide are formed when 350 kJ are released? 2Al(s) + Fe2O3 -- Fe(s) + Al2O3(s) H=-850 kJ
Thursday, May 24, 2012 at 4:15am by Fiona

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
Monday, April 7, 2008 at 2:12pm by Sarah

chemistry
The factor (2*molar mass Fe3O4/3*molar mass Fe2O3) is called the chemical factor. It isn't taught in schools anymore (a mistake I think) because it can be arrived at through another procedure. The entire process is this. 4Fe3O4 + 2O2 ==> 6Fe2O3 + O2 12.5g Fe2O3 x (4 mols ...
Thursday, September 5, 2013 at 7:50pm by DrBob222

Ap Chemistry
Convert 36.1 g Fe2O3 to g Fe3O4. 36.1 x (2*molar mass Fe3O4/3*molar mass Fe2O3) = ? g Fe3O4. % Fe3O4 = (g Fe3O4/60.67)*100 = ?
Thursday, September 6, 2012 at 1:14pm by DrBob222

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?
Tuesday, July 9, 2013 at 4:12am by Anonymous

Chemistry
Aluminum cookware is reffered ti as "anodized aluminum". The anodizing process puts a layer of aluminum oxide on the aluminum, protecting it from corrosion. Consider the reaction of 10.00 grams of aluminum with 10.00 grams of oxygen to form aluminum oxide. What is the formula ...
Sunday, February 15, 2009 at 4:01pm by Stacey

Chemistry-Equations
Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts completely with oxygen?
Friday, March 5, 2010 at 11:27am by meg

Chem 2
If we burn a strip of magnesium in air, there will be two main products, magnesium oxide and magnesium nitride. If we then treat that mixture with water, the nitride ion is converted to ammonia. After boiling away the water and ammonia, we would be left with only magnesium ...
Sunday, January 13, 2013 at 12:48pm by Maggie

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
Tuesday, October 18, 2011 at 8:25pm by Anonymous

Chemistry
Suppose you tried to combine 42 grams of magnesium with 45 grams of oxygen. Which of the two substances would be left after the reaction? How much magnesium oxide will be formed?
Sunday, October 3, 2010 at 11:39pm by Chris

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...
Wednesday, November 16, 2011 at 8:58pm by Megan

chemistry,again
Convert 255 g Fe3O4 to mols. mols = grams/molar mass. Using the balanced equation, convert mols Fe3O4 to mols Fe2O3. Convert mols Fe2O3 to grams.
Monday, April 7, 2008 at 2:12pm by DrBob222

Chemistry
Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts completely with oxygen? a. 12.0g b. 23.9g c. 47.8g d. 95.6g
Thursday, June 21, 2012 at 11:09am by Summer

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
Friday, September 21, 2007 at 1:27pm by Jamal

Chemistry
A 4.5 g piece of magnesium ribbon undergoes combustion in air to produce a mixture of two ionic solids, MgO and Mg3N2. Water is added to this mixture. It reacts with the magnesium oxide to form 9.97 g of magnesium hydroxide. Assume all reactions go to completion. A) write a ...
Wednesday, October 13, 2010 at 1:04am by Doris

AP Chemistry
Amount of Iron in sample: n[Fe] = 3 m[Fe3O4]/w[Fe3O4] Amount of Iron in assay: n[Fe] = 2 m[Fe2O3]/w[Fe2O3] The amount of iron is conserved, so: m[Fe3O4] = (2/3) m[Fe2O3] w[Fe3O4] / w[Fe2O3] Substitute: m[Fe2O3] = 26g w[Fe2O3] = 159.6887 0.0002 g/mol w[Fe3O4] = 231.5333 0....
Friday, August 30, 2013 at 7:31pm by Graham

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)
Saturday, March 31, 2012 at 8:45pm by Anonymous

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?
Thursday, May 5, 2011 at 10:41am by Loren

chemistry
In the following reaction, how many grams of ferrous sulfide (FeS) will produce 0.56 grams of iron (III) oxide (Fe2O3)? 4FeS + 7O2d 2Fe2O3 + 4SO2 The molar mass of ferrous sulfide is 87.92 grams and that of iron (III) oxide is 159.7 grams.
Saturday, April 13, 2013 at 2:58am by kerin

science
what will be the law of conversion of a) 65 grams 70 grams b) magnesium + oxygen = magnesium oxide 45 grams ? grams 80 grams c) sodium hydroxide + hydrochoride acid 40 grams 36.5 grams sodium chloride + water ? grams 18 grams
Saturday, August 4, 2012 at 12:35pm by Magaly

chemistry
given; how many grams of fe2o3 can be converted to fe3o4 by 14 grams of co?
Tuesday, March 20, 2012 at 2:33am by Anonymous

Chemistry
In the following reaction, how many grams of ferrous sulfide will produce 0.56 grams of iron oxide? 4FeS+7O2->2Fe2O3+4SO2 The molar mass of ferrous sulfide is 87.92 grams and that of iron oxide is 159.7
Wednesday, June 26, 2013 at 11:49am by Brittany

chemistry
Suppose you tried to combine 42 grams of magnesium with 42 grams of oxygen. Which of the two substances would have some left after the reaction and how much magnesium oxide would be formed?
Wednesday, March 3, 2010 at 7:18pm by tony

chemistry
Calculate the theoretical yield of the precipitate formed when a solution containing 1.02 grams of lithium phosphate is mixed with a solution containing 2.72 grams of strontium nitrate
Thursday, April 19, 2012 at 11:55am by Rayna

General Chemistry
From your description, I think you have formed red lead oxide (Pb3O4), The oxide ion is present in the ppt.
Monday, October 8, 2012 at 11:36pm by DrBob222

CHEM
You have the balanced equation. 1. Convert 543 g Fe3O4 to moles. Moles = grams/molar mass. 2. Using the coefficients in the balanced equation, convert moles Fe3O4 to moles of what you want (moles Fe). 3. Now convert moles Fe to grams. grams = moles x molar mass.
Monday, August 3, 2009 at 9:28pm by DrBob222

chemistry
You have the balanced equation. moles MnO4^- = M x L Using the coefficients in the balanced equation, convert moles MnO4^- to moles Fe. Now convert moles Fe to grams Fe. g = moles x molar mass. %Fe = (mass Fe/mass sample)*100 = ?? Convert mass Fe to mass Fe3O4. (I assume that ...
Sunday, April 4, 2010 at 5:06am by DrBob222

Chem Electron Config
A 10.0-g sample of C2H5OH is burned completely in air. How many molecules of H2O are formed? 3.921023 *How many grams are formed?* did anyone figure out how to get the grams of H2O formed?
Thursday, October 18, 2012 at 3:59pm by Shay

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?
Thursday, August 30, 2012 at 10:18pm by Nick

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?
Wednesday, November 18, 2009 at 7:13pm by Nathan

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 %.
Sunday, October 3, 2010 at 9:18pm by Anonymous

Chemistry
When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed? a) Write a balanced chemical equation for the above reaction. b) Show by unit conversion (show conversion factors, ie. 2 g H20 x 1 mole H2O/18 g H2O x ...... x ...... = answer
Friday, June 15, 2012 at 1:12pm by Ashley

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?
Thursday, May 30, 2013 at 5:52pm by Anonymous

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 %
Thursday, September 6, 2012 at 1:14pm by Karen

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 %
Friday, August 30, 2013 at 9:32pm by Gabriella

AP Chemistry
Given: m{sample} = 40.93g m{Fe2O3} = 30.7g w{Fe2O3} = 159.6887 0.0002 g/mol w{Fe3O4} = 231.5333 0.0003 g/mol And the stoichiometry: 3 m{Fe3O4}/w{Fe3O4} = 2 m{Fe2O3}/w{Fe2O3} The percentage of magnetite in the sample is: m{Fe3O4} / m{sample} = (2/3) m{Fe2O3} w{Fe3O4} / (w{...
Friday, August 30, 2013 at 9:32pm by Graham

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?
Sunday, March 28, 2010 at 10:09pm by Zak

Chem - oxides
When an element is burnt in excess oxygen, is the oxide formed always: 1. a crystalline solid 2. greater in mass than the element 3. soluble in water 4. white in color alright, i know that most oxides are not soluble in water other than group 1 elements and calcium and barium...
Wednesday, September 23, 2009 at 2:14am by Monica

chem
18.1g of ammonia and 90.4g of copper(II) oxide are used in the reaction 2NH3+3CuO=N2+3Cu+3H3O.What is the limiting reactant? How many grams of nitrogen will be formed?
Tuesday, March 18, 2014 at 12:26pm by fredrick

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?
Wednesday, December 2, 2009 at 7:56pm by Dalton

chemistry
J. J. Berzelius collected the following data for three reactions: Reaction 1 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur Reaction 2 11.56 grams of lead sulfide were formed when 10.0 grams of lead reacted with 3.00...
Wednesday, October 9, 2013 at 2:08pm by Brittney

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? hydrochloric acid (aq) + iron(III) oxide (s)--> water (l) + iron(III) chloride (aq)
Wednesday, December 2, 2009 at 7:58pm by Dalton

chemistry
in an attempt to establish the formula of an oxide of nitrogen , a known volume of the pure gas was mixed with hydrogen and passed over a catalyst at a suitable temperature. 100% conversion of the oxide to ammonia and water was shown to have taken place. NxHy gives xNH3 + YH20...
Wednesday, February 13, 2013 at 5:09am by harish

chemistry
in an attempt to establish the formula of an oxide of nitrogen , a known volume of the pure gas was mixed with hydrogen and passed over a catalyst at a suitable temperature. 100% conversion of the oxide to ammonia and water was shown to have taken place. NxHy gives xNH3 + YH20...
Sunday, February 10, 2013 at 1:21am by harish

chemistry
A piece of magnesium weighing 48 grams is burned in air n 80 gram of magnesium oxide is formed. what mass of oxygen combined with the magnesium is in the reaction?
Sunday, March 23, 2014 at 10:26am by Rodney

CHEMISTRY
how many grams of copper (II) Chloride are formed in the double replascement reaction of 1.1 g copper (II) oxide and excess hydrochloric acid?
Sunday, July 11, 2010 at 10:05pm by maleia

chemistry Emergency TEST
1.How many moles of sodium oxide are produced when3.9 moles of sodium combine with excess oxygen. 2. Sodium chloride decomposes into elemental sodium and elemental chlorine.How many grams of chlorine will be produced if 39.4 grams of sodium chloride decomposes 3.If 6.7 moles ...
Thursday, February 14, 2013 at 10:50pm by Christian

Chemistry
determine the amount of water formed in 4NH3 + 5O2 4NO + 6H2O if 10 g of Oxygen is mixed with 10g nitrigen trihydride in grams
Friday, February 21, 2014 at 10:43am by Lee Walkr

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?
Thursday, June 20, 2013 at 11:04pm by c

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? ...
Saturday, December 4, 2010 at 4:31pm by Austin Jekins

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 ...
Tuesday, October 19, 2010 at 12:04pm by Jason

chemistry
Suppose a solution containing 3.50 g of Na3PO4 is mixed with an excess of Ba(NO3)2. How many grams of Ba(PO4)2 can be formed.
Thursday, March 4, 2010 at 4:58pm by Kerry

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
Thursday, February 17, 2011 at 4:53pm by hannah

Chemistry
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium ...
Monday, December 6, 2010 at 11:27pm by Josh

Chemistry
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium ...
Tuesday, December 7, 2010 at 1:09pm by Josh

Chemistry
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium ...
Wednesday, December 8, 2010 at 11:14am by Josh

Chemistry
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium ...
Friday, December 10, 2010 at 2:19pm by Josh

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
Thursday, February 17, 2011 at 8:29pm by hannah

chemistry
Suppose 13.8 g Na and 21.6 g of water are mixed. What is the theoretical yield in grams of hydrogen from this mixture. what is the % yield if 0.500 g of H2 is formed
Sunday, October 6, 2013 at 11:05pm by Anonymous

chemistry
A sample being given as a laboratory unknown is a mixture of calcium carbonate and magnesium carbonate. Both substances decompose to form calcium oxide and magnesium oxide, respectively, when heated at a high temperature for a prolonged period. An unknown sample weighing 5.424...
Saturday, October 6, 2012 at 4:58pm by anonymousokm

chemistry
Probably Fe2O3, iron(III) oxide. Rust is formed with oxygen from the air and moisture and usually is referred to in texts as hydrated iron(III) oxide.
Saturday, September 13, 2008 at 7:28pm by DrBob222

chemistry
How many grams of mercury are formed from 47.0 of HgO? How many grams of oxygen are formed from 47.0 of HgO? How many grams of HgO would you need to obtain 34.1 of O2?
Tuesday, February 7, 2012 at 3:14pm by ASh

Chemistry Help!
If 100 grams of KClO3 are heated to form KCl and O2 according to the equation KClO3 KCl + O2 (Hint: You need to balance the equation) a. How many moles of KClO3 reacted? b. How many moles of KCl are formed? c. How many grams of KCl are formed? d. how many moles of O2 are ...
Tuesday, February 12, 2013 at 2:24pm by Allison

Stiochiometry
Equation 2Mg+O2= 2MgO Lab data: Magnesium ribbon= .04 grams Magnesium Oxide= .09 2. Using the initial mass of magnesium, calculate the moles of oxygen and then moles of magnesium oxide produced. What is the mole ratio of the reactants? 3. Calculate the mass of magnesium oxide ...
Thursday, February 26, 2009 at 6:45pm by Emily

science
Ammonia gas can be prepared by the reaction of a metal oxide such as calcium oxide with ammonium chloride. CaO(s) + 2 NH4Cl(s) 2 NH3(g) + H2O(g) + CaCl2(s) If 199 g of CaO and 300. g of NH4Cl are mixed, what mass of NH3can be produced?
Thursday, September 16, 2010 at 7:16pm by Noel

Chemistry
How many grams of iron are there in a sample of Fe3O4 which weighs 8.338 g?
Monday, September 20, 2010 at 9:26pm by Diggs

Chemistry
Most of these problems, where only one reactant is given, is a simple stoichiometry problem. Print out these instructions and memorize them. 1. Write the equation and balance it. 2. Convert grams of iron oxide to moles. moles = grams/molar mass 3. Using the coefficients in the...
Sunday, March 28, 2010 at 6:16pm by DrBob222

College Chemistry
how many moles of glucose colud be formed from the complete reaction of the 200 grams of C02? how many grams of glucose will be formed?
Thursday, October 7, 2010 at 7:38am by alima

Chemistry
mols Fe3O4 = grams/molar mass Convert mols Fe3O4 to mols CO2. g CO2 = mols x molar mass
Tuesday, July 9, 2013 at 4:12am by DrBob222

Science
Try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=how+is+an+oxide+ion+formed Sra
Friday, December 3, 2010 at 1:52am by SraJMcGin

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 ...
Sunday, December 9, 2012 at 2:10pm by Marie

Chemistry
Aluminum metal and Iron(III) oxide react to give aluminum and iron metal. What is the maximum amount of Iron that can be obtained from a reaction mixture containing 2.5 grams of aluminum and 9.5 grams of Iron(III) oxide? What mass of excess reactant remains?
Saturday, October 1, 2011 at 8:57pm by Jessica

Chemistry Problem!
Work it backwards. You want to end up with 150 mg Fe2O3. How much Fe(OH)3 must you have? 150 mg Fe2O3 x [2*molar mass Fe(OH)3/molar mass Fe2O3] = ? mg Fe(OH)3 What must be the mass Fe3O4? ?mg Fe(OH)3 x [2*molar mass Fe3O4/3*molar mass Fe2O3] = ? mg Fe3O4. Since that mg Fe3O4 ...
Monday, January 16, 2012 at 5:48pm by DrBob222

college chemistry
Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
Wednesday, March 5, 2014 at 5:13pm by steven

Chemistry
If 3.00 mol of calcium carbonate is heated to produce calcium oxide and carbon dioxide, how many grams of calcium oxide are produced?
Tuesday, March 29, 2011 at 2:08pm by John Goodroe

Chemistry
If 3.00 mol of calcium carbonate is heated to produce calcium oxide and carbon dioxide, how many grams of calcium oxide are produced?
Tuesday, March 29, 2011 at 2:11pm by John Goodroe

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...
Wednesday, February 6, 2008 at 12:41am by mhaidar9108

chemistry
Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
Wednesday, March 5, 2014 at 5:12pm by steven

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...
Tuesday, February 5, 2008 at 11:23pm by mhaidar9108

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...
Thursday, January 31, 2008 at 8:13pm by Theodore

Chemistry
Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work: 4CaCO3+Al2(SiO3)3->CaO(s)+4CO2(g)+Al2O3+3CaSio3 I ...
Saturday, January 29, 2011 at 3:26pm by Jim

Chemistry
Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work: 4CaCO3+Al2(SiO3)3->CaO(s)+4CO2(g)+Al2O3+3CaSio3 I ...
Saturday, January 29, 2011 at 5:20pm by Jim

Chemistry
Iron(III) oxide is formed when iron combines with oxygen in the air. What is the mole ration of Fe used and the mole of Iron(iii) oxide produced? 4Fe(s) + 3O2(g) > 2Fe2O3(s) a - 3:2 b - 4:3 c - 4:2 d - 3:4 Can someone help?
Monday, May 14, 2012 at 9:47pm by Kaelan

chemistry
How many moles are in 15 grams of Lithium oxide? I got 5.0205 mol Lithium oxide but I just wanted to see if anyone else got this.
Sunday, September 9, 2012 at 12:39am by Poola

chemistry
how many grams of water can be formed when 28.7 grams of CH4 reacts with 45.8 grams of O2
Thursday, December 16, 2010 at 8:23pm by mickey

chemistry
how many grams of water can be formed when 28.7 grams of CH4 reacts with 45.8 grams of O2
Thursday, December 16, 2010 at 8:25pm by mickey

Chemistry Electrolytes
What is the total number of ions formed when 2.00 grams of calcium chloride are dissolved in 100 grams of water. (Ignore any ions formed by the water). Note, this is a bit of a trick question. Read the problem carefully.
Monday, June 1, 2009 at 6:54pm by Gweedo8

Chemistry
Have you considered writing the balanced equation? CaCO3>>CaO + O2 for each mole of calcium oxide, you need that number of moles of calcium carbonate. a. how many moles of calcium oxide it 50 grams? b. for that number of moles of calcium carbonate, how many grams is that?
Sunday, June 2, 2013 at 7:51pm by bobpursley

Chemistry 101 Electrolytes
What is the total number of ions formed when 2.00 grams of calcium chloride are dissolved in 100 grams of water. (Ignore any ions formed by the water). Note, this is a bit of a trick question. Read the problem carefully.
Monday, June 1, 2009 at 5:22pm by Gweedo8

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