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July 25, 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: 11,209

CHEM
How many grams of water and iron must react to produce 543 g of iron oxide, Fe3O4? 3Fe + 4H2O---> Fe3O4 + 4H2
August 3, 2009 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 ...
December 13, 2011 by Anne

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?
May 5, 2010 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)
January 31, 2008 by cambell

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

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
May 24, 2012 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
April 7, 2008 by Sarah

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 ...
February 15, 2009 by Stacey

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?
July 9, 2013 by Anonymous

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 ...
January 13, 2013 by Maggie

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
September 21, 2007 by Jamal

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?
October 3, 2010 by Chris

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
October 18, 2011 by Anonymous

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?
March 5, 2010 by meg

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
June 21, 2012 by Summer

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...
November 16, 2011 by Megan

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 ...
October 13, 2010 by Doris

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?
May 5, 2011 by Loren

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)
March 31, 2012 by Anonymous

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?
March 3, 2010 by tony

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

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
August 4, 2012 by Magaly

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.
April 13, 2013 by kerin

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?
November 18, 2009 by Nathan

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...
October 9, 2013 by Brittney

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
June 26, 2013 by Brittany

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

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 %.
October 3, 2010 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 %
September 6, 2012 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 %
August 30, 2013 by Gabriella

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?
March 18, 2014 by fredrick

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
April 19, 2012 by Rayna

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.
March 4, 2010 by Kerry

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?
October 18, 2012 by Shay

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?
March 28, 2010 by Zak

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?
July 11, 2010 by maleia

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?
May 30, 2013 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
June 15, 2012 by Ashley

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?
December 2, 2009 by Dalton

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
February 21, 2014 by Lee Walkr

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
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)
December 2, 2009 by Dalton

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 ...
February 14, 2013 by Christian

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?
March 23, 2014 by Rodney

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?
June 20, 2013 by c

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...
September 23, 2009 by Monica

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 ...
February 12, 2013 by Allison

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 ...
October 19, 2010 by Jason

Chemistry
How many grams of iron are there in a sample of Fe3O4 which weighs 8.338 g?
September 20, 2010 by Diggs

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
October 6, 2013 by Anonymous

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 ...
March 5, 2014 by steven

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? ...
December 4, 2010 by Austin Jekins

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
February 17, 2011 by hannah

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 ...
March 5, 2014 by steven

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 ...
December 6, 2010 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 ...
December 7, 2010 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 ...
December 8, 2010 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 ...
December 10, 2010 by Josh

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 ...
December 9, 2012 by Marie

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...
February 13, 2013 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...
February 10, 2013 by harish

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
February 17, 2011 by hannah

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?
February 7, 2012 by ASh

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...
February 6, 2008 by mhaidar9108

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...
October 6, 2012 by anonymousokm

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...
February 5, 2008 by mhaidar9108

PLZ ANSWER CHEM QUESTION
a chemist reacted 64 grams of Ru with O2. This reaction produced 160 grams of ruthenium oxide and 4 grams of leftover O2. How much of the reactants would this scientist need to make 320 grams of the product with no leftover O2? Ru + O2 = RuO2 + O2 leftover
November 3, 2011 by Griffinson

AB Chemistry4
4 HCl + MnO2 ==> MnCl2 + 2 H2O + Cl2 How many grams of MnCl2 are formed when 36.0 grams of water are also formed? DO we have to calculate mole mass first?
May 17, 2014 by jody McHale

chem
consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are formed, what is the...
November 14, 2010 by julia

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 ...
February 26, 2009 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?
September 16, 2010 by Noel

chemistry
2Hg+O2=2HgO if 50.0 grams of mercury reacts with 50.0 grams of oxygen gas, how many grams of mercury(ii)oxide are produced?
February 14, 2014 by mom

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)
October 31, 2012 by Boo Boo

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?
October 1, 2011 by Jessica

Chemistry
Kim and Al need to determine the actual mass of lead(II) sulfate in grams that formed when 1250.0mL of 0.0500 M lead(II) nitrate was mixed with 0.2000 kL of 0.0250 M sodium sulfate. When the experiment was completed Kim determined that they had a 67.5% yield. 1)How many grams ...
October 8, 2007 by Fred

Ap chem
If 200 ml of .300 molarity of silver nitrate are mixed with 350 ml of .500 molarity calcium chloride ions how many grams of percipitate are formed? How many moles of each ions are present?
November 6, 2012 by Eman

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?
March 29, 2011 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?
March 29, 2011 by John Goodroe

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
December 4, 2010 by Austin Jekins

Chemistry
If 80.0 grams of methane were reacted with 368 grams of oxygen, how many grams of water would be formed (find limiter first).
April 3, 2011 by Lisa

chemistry
how many grams of ammonia (NH3) will react with 27.8 grams of nitric oxide (NO)? 4NH3 + 6NOd 5N2 + 6H2O
April 11, 2012 by Anonymous

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.
June 1, 2009 by Gweedo8

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.
June 1, 2009 by Gweedo8

Chemistry 130
Will someone help me by letting me know if I did these correct, or if there the correct answers? Thanks! 2 (10). If two moles of hydrogen gas (H2) react in the following equation, how many moles of H2O will be formed? 2H2 + O2 2H2O a. 2 moles b. 4 moles c. 1 mole d. 8 moles...
September 8, 2009 by Jessie

chem
when hydrocarbons are burned in a limited amount of air CO as well as CO2 form. When 0.450 grams of a particular hydrocarbon was burned in air, 0.467 grams of CO, 0.733 grams of CO2, and 0.450 grams of H20 were formed. a. What is the empirical formula? I got C2H3! check? b. ...
August 17, 2012 by skye

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.
November 6, 2009 by Kyle

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.
September 9, 2012 by Poola

chemistry
how many grams of water can be formed when 28.7 grams of CH4 reacts with 45.8 grams of O2
December 16, 2010 by mickey

chemistry
how many grams of water can be formed when 28.7 grams of CH4 reacts with 45.8 grams of O2
December 16, 2010 by mickey

chem
how is the oxide of arsenic worked out when its in its gas state please help im flumuxed Please clarify your question? What do you mean by "worked out? the question states determine the molecular formular of the oxide of arsenic when it is in its gaseous state evidence arsenic...
January 30, 2007 by donald

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 ...
January 29, 2011 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 ...
January 29, 2011 by Jim

Chemistry
2 CH3Cl + Si --> (CH3)2SiCl2 If 170 g of CH3Cl and 143 g of Si are mixed together, what is the maximum amount (in grams) of (CH3)2SiCl2 that can be formed?
November 4, 2012 by Sheree'

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?
May 14, 2012 by Kaelan

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
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
December 6, 2012 by bri

Chemistry
100 grams of glucose is mixed with 500 grams of water. 10 grams of yeast is then added to the mixture. If the reaction goes to completion, what is the mass of ethanol in the final mixture?
April 28, 2011 by William

Inorganic chemistry
One kind of battery used in watches contains mercur(II) oxide. As current flows, the mercury oxide is reduced to mercury. HgO(s) + H2O(l) + 2e^- ==> Hg(l) + 2OH^-(aq) If 2.5x10^-5 amperes flows continuously 1095 days, what mass of Hg(l) is produced? (2.5x10^-5)(1095days)(...
April 14, 2009 by Steve

Chemistry
How many grams of oxygen can be produced by heating 10.0g of mercury (II) oxide? Sulfuric acid is added to 8.10g of magnesium, how many grams of hydrogen are set free? Answered abovd.
March 5, 2007 by Beautiful

Chemistry
When a 1.350g sample of element X is heated in a stream of chlorine gas 6.67g of XCl3 are formed.1.) What(write) is a balance equation for the reaction using 'X' for the element? 2.) Calculate the atomic weight of X. 3.)What mass of X is left unreacted? 4.)When 1.00 grams of X...
December 9, 2010 by Joseph

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