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December 18, 2014

Search: stoichiometry

Number of results: 252

Chemistry- Stoichiometry
"Why must a chemical reaction be balanced before it can be used in stoichiometry?" I mean, I get it, that the equation will be off if it doesn't start out balanced, but, why? How do I phrase that?
September 27, 2007 by Shelby

stoichiometry problems
Hey I hve problems with calculate stoichiometry problems and next week I have a test about it can someone help me out and give me a site where everything is written step by step ....thank u guys :) I REALLY NEED HELP NO JOKING
November 12, 2010 by Tarkan

Stoichiometry
I am taking an online chemistry class and I do not at all understand how on earth how to do stoichiometry. I just dont get it, its not that I dont know how to do the math, but figuring out how to ger the information. PLEASE HELP!! When 11.7 grams of iron and 212.7 grams of ...
July 10, 2008 by Kesiah

11th grade
how do you do STOICHIOMETRY?
February 8, 2010 by kewan

Chemistry
What is the stoichiometry of elements in c2h6
February 15, 2012 by Bay

Stoichiometry Test
What is the percentage of oxygen in____? Mg(OH)2
February 12, 2009 by Cool Dom

Chemistry
How many types of stoichiometry are there? Can you list them? Thanks I appreciate it!
January 14, 2013 by Kayla

stoichiometry
what is the mole ratio of oxygen to water
May 7, 2013 by jojo

stoichiometry
determine the number of moles in 4.50g of MgCl2?
April 22, 2012 by kim

Chemistry
Why is it important to identify the limiting reactant in stoichiometry?
March 5, 2013 by Kristie

stoichiometry
how many grams of water are produced when 2.50 moles of oxygen are used?
May 8, 2008 by holli

stoichiometry
if 3.00 moles of water are produced, how many grams of oxygen must be consumed?
May 8, 2008 by holli

Stoichiometry
How much 6M HCl and NaHCO3 are required to make 1 quart of CO2?
June 1, 2011 by Piehead

chemistry
The subject is stoichiometry. How many moles of NH3 can be produced from 12.0mol of H2 and excess N2?
September 14, 2013 by BeeBee

Chem.
What is the overall stoichiometry for the reaction between iodide and peroxydisulfate ions?
February 13, 2014 by Kay.

stoichiometry problem
how many grams of oxygen gas are needed to react with 5.7 moles of phosphorus
June 7, 2010 by mimi

CHEMISTRY
may i please get some notes on stoichiometry because i dont seem to be getting anything.
September 1, 2011 by elizabeth

scientist
what are some background information for the stoichiometry lab involving hcl and naco3
November 8, 2011 by scientist

Chemistry/Stoichiometry
How many liters of H2 are needed to produce 2.00g of NH3? N2+3N2 ---> 2NH3
January 10, 2012 by Marianna

Stoichiometry
if you have 66.6g NH3, how many grams of F2 are required for a complete reaction? please show work!!!!!
February 7, 2010 by Tristan

stoichiometry problems
How many grams of NaCl with a molar mass of 58.44 would be needed to make 2.5 L of 0.00500 solution?
November 23, 2008 by Cindy

Stoichiometry Problem?
How many Milliters of 18.0M H2SO4 are required to react with 250mL of 2.50 M Al(OH)3 if the products are aluminum sulfate and water?
March 29, 2009 by Anonymous

Gas Stoichiometry
What mass of ammonia is produced when 3.08 L of nitrogen (at STP) react completely in the following equation?
May 6, 2013 by Jenny

Stoichiometry Test
Thanks Damon i got a couple more lolz 2.Determine the formula mass of (NH4)2C4H4O6
February 12, 2009 by Cool Dom

Chem - Stoichiometry
How many grams of sodium carbonate is required for a complete reaction with 1.00g of calcium chloride dihydrate? Help!
October 17, 2009 by Erin

Chem - Stoichiometry
How many grams of sodium carbonate is required for a complete reaction with 1.00g of calcium chloride dihydrate? Help!
October 18, 2009 by Erin

Stoichiometry
How man liters of hydrogen should have been collected by reacting .045 grams of magnesium?
March 1, 2011 by Sonia

Chemistry
Acid Question!? An unusual category of acids known as superacids, which are defined as any acid stronger than 100% sulfuric acid, can be prepared by seemingly simple reactions similar to the one below. In this example, the reaction of anhydrous HF with SbF5 produces the ...
March 30, 2007 by Anonymous

stoichiometry
How many grams of Nitric oxide are required to produce 145g of nitrogen in this reaction: Al2O3(s)+6NO(g)---->5N2(g)+6H2o(l)
November 17, 2011 by mandy

Chemistry
How many grams of carbon dioxide are produced if you react 200g of benzaldehyde reacr with 32g of oxygen? its stoichiometry, i have no idea how to do this...
January 12, 2010 by Jason

chemistry
in stoichiometry, after you have balanced the formula, how do you know which substance is the one you use to convert all 4 times to get the wanted reults
March 16, 2011 by "anonymous"

Chemistry: Stoichiometry
calculate the number of oxygen needed to oxidize 12.5grams of glucose (C6H12O6) into carbon dioxide and water. (Combustion reaction)
April 14, 2011 by Opo

Chemistry: Stoichiometry
calculate the number of oxygen needed to oxidize 12.5grams of glucose (C6H12O6) into carbon dioxide and water. (Combustion reaction)
April 14, 2011 by Opo

Chemistry
When 320.62 grams of Bi2O3 react with excess of C, how many moles of Bi form? I know I need to use stoichiometry, but I can't quite seem to get the correct balanced equation.
June 30, 2011 by Brooke

stoichiometry
What mass of nitrogen monoxide can be made by the reaction of 8.00 g ammonia and 17.0 g oxygen? correct answer is 12.8 0.1 (g) I keep getting 14.1 g and that the limiting reagent is NH3 What am I doing wrong?
March 1, 2012 by Rose Bud

Chemistry
I need help with Stoichiometry Mapping and solving using the "line bar" method Cl2P4(s)+6Cl2(g) --> 4PCl3(g) How many mL of PCl3 can be produced by the reaction of so g of Cl2(g)
March 8, 2012 by Help!

Stoichiometry
What mass of NO2 is formed when NO reacts with 384 g of 02? Please be VERY descriptive. I've been out of school and I'm expected to take a test tomorrow on this.
May 23, 2012 by Rebecca

Chemistry
How many grams of CS2(g) can be prepared by heating 12.9 moles of S2(g) with excess carbon in a 7.00 L reaction vessel held at 900 K until equilibrium is attained? Stoichiometry is 1 to 1
February 21, 2013 by Moni

Stoichiometry Test
THIS TEST IS DUE IN 15 MINS AND I JUST NEED HELP ON HOW TO DO IT LIKE THE STEPS FOR THEM ??
February 12, 2009 by Cool Dom

chemistry
answers to latenite labs chemistry lab#9 stoichiometry by loss of CO2
January 19, 2012 by Anonymous

Chemistry
why is it important that the equations be balanced when performing mass-mass stoichiometry problems?
March 18, 2013 by Lindt

stoichiometry
If 3.00 moles of water are produced, how many moles of oxygen must be consumed?
May 8, 2008 by holli

stoichiometry
if you have 0.25 moles of carbon monoxide how many grams would you have?
May 8, 2008 by holli

Stoichiometry
6 NaOH + 2 Al ---> 2 Na3AlO3 + 3 H2 How many moles of NaOH are required to produce 3 g of hydrogen?
March 22, 2009 by Ivan

chemistry-stoichiometry
how many grams of chlorine can be liberated from the decomposition of 64.0g of AuCl3 by this reaction 2 AuCl3----> 2 Au + 3cl2
May 19, 2008 by lori

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

Stoichiometry Problems
How many grams of phosphorus can be obtained from the decomposition pf 45kg of POCL3. 2 POCL3 --(> 2P + 3Cl2 + O2
February 27, 2011 by Ray

stoichiometry
How many moles of hydrogen are needed to completely react with 2.0 moles of nitrogen? N2 + 3H2 -- 2 NH3
March 29, 2011 by gail

Chem
How do you determine the rate of reaction of a substance using stoichiometry and the average volume of the reaction on mixture?
February 16, 2014 by Anonymous

stoichiometry
if you have 3 moles of salt, how many grams would you have?
May 8, 2008 by holli

Stoichiometry
if 3.5 mol TiCl4 reacts with 4.5 mol O2, which is the limiting reactant?
March 27, 2011 by Kathy

chemistry
Why do you need to use amount in moles to solve stoichiometry problems? Why cant you just convert from mass to mass?
June 2, 2010 by rob

chemistry-stoichiometry
If 5 moles of ammonia is produced in the reaction N2 + 3 H2 2 NH3, the number of hydrogen moles consumed is ____?
December 14, 2011 by caity

Chemistry-Stoichiometry
what is the limiting reactant if 0.10 moles Fe and 0.16 moles O2 react according to the reaction 4Fe +3O2 -> 2Fe2O3?
October 19, 2013 by Barbara

chem/stoichiometry
What volume of oxygen gas is produced when 17.5 grams of KBrO3 decomposes? and the equation is KBrO3==>KBr+30 HELP ME PLZ
March 16, 2008 by kevin

stoichiometry
How many liters of H2 are required to react completely with 5.7 liters of O2?
February 4, 2013 by shannon

Chem-Gas Stoichiometry
N2+3H2->2NH3 What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia? (assume constant temp. and pressure.)
May 5, 2008 by Alex

Stoichiometry
If 0.500 g of sulfur dioxide from pollutants reacts with excess water and oxygen found in the air, what mass of sulfuric acid can be produced? 2H2O(l)+O2(g)+2SO2(g)= 2H2SO4(aq)
April 19, 2011 by YV

Stoichiometry
If 0.500 g of sulfur dioxide from pollutants reacts with excess water and oxygen found in the air, what mass of sulfuric acid can be produced? 2H2O(l)+O2(g)+2SO2(g)= 2H2SO4(aq)
April 19, 2011 by YV

STOICHIOMETRY
2Al + 3CuSO4 ! Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess CuSO4?
November 4, 2010 by MAGGIE

chem
How do I calculate the rate of a reaction of a substance using the slope of the lines and stoichiometry of the reactions in moles/sec. I also know that the molarity of that substance.
February 13, 2014 by rachel

Chemistry-Stoichiometry
A 1.146g mixture of the solid salts NaS)4 and PB(NO3)2 forms an aqueous solution with the precipitation of PbSO4. How would I write the molecular form of the equation for the reaction?
March 1, 2012 by Edward

Chemistry (Stoichiometry)
Two students react 15.50g of Lead (II) nitrate with 3.81g of sodium chloride. Predict the mass of the excess reactant left over when the reaction is complete.
May 8, 2012 by Josh

chemistry
hello i'm doing a redox stoichiometry lab having to do with titration 6H +5H2O2 + 2MnO4 -- 5O2 + 2Mn2+ + 8H2O Why is H2O2 the source of O2 product in this titration?
March 22, 2012 by Jo

Science
Can somebody help me with this stoichiometry problem? The human body requires energy that comes from metabolizing sucrose, C12H22O11, given 268.8L of oxygen, how many liters of carbon dioxide (at STP) are produced?
May 26, 2011 by Colleena

chemistry, stoichiometry
Consider the Balanced Chemical Equation 2N2+6H20-->4NH3+3O2 How many moles would be needed to react fully with 0.225 moles of N2?
April 30, 2013 by Katie

Stoichiometry Test
4.A compund is found to have(by mass)48.38% carbon,8.12% hydrogen and the rest oxygen.(What % is missing to make the sum 100 %?) That is,figure % oxygen.What is its empirical formula?
February 12, 2009 by Cool Dom

stoichiometry
if 5.00g magnesium is combined with 10.0 g of chlorine, show by calculation which substance is the limiting reactant and calculate the theoretical yield of magnesium chloride for the reaction. Someone PLEASE HELP ME!!!!
September 11, 2009 by Laura

chemistry/stiochiometry
could someone please answer my chemistry/stoichiometry questions below both "anonymous one just chemistry on todays date
March 16, 2011 by "anonymous"

chemistry
how do I write this equatio out and is it stoichiometry problem. Find the mass of sodium hydroxide needed to neutralize enough nitric acid to create 2.0 gram of sodium nitrate?
November 30, 2010 by Tosha

chemistry- stoichiometry problems
Mg+2 NaF-> MgF2+2 Na If you start with 5.5 grams of lithium chloride, how many grams of calcium chloride will be produced?
April 22, 2009 by anon

Chemistry
Please help with these 2 stoichiometry questions. How many grams of NH3 can be produced from 3.98 mol of N2? How many grams of H2 are needed to produce 10.41g of NH3?
September 27, 2010 by Sarene

Stoichiometry
Find the limiting reactant for the initial quantities of reactants 2k(s) + Cl2(g)--> 2KCl(s) 1.8 mol K; 1 mol Cl2 I'm lost
October 4, 2011 by Monique

Stoichiometry
Find the limiting reactant for the initial quantities of reactants 2k(s) + Cl2(g)--> 2KCl(s) 1.8 mol K; 1 mol Cl2 I'm lost
October 4, 2011 by Monique

Stoichiometry
How many grams of oxygen are required to completely burn 85.6 grams of methane (CH4)? CH4 + O2 → H2O + CO2
November 14, 2012 by Mike

chemistry!
[blank] mL of 6.0 M H2SO4 are needed to prepare 300 mL of 1.0 M H2SO4 solution. 50 mL x M = mL x M (works for dilution problems but not for all stoichiometry problems.)
April 29, 2007 by Emi

chemistry- stoichiometry problems
C2H4+3 O2->2 co2+2 H2O If you start wit 45 grams of C2H4 how many grams of carbon dioxide will be produced?
April 22, 2009 by anon

Stoichiometry
[Volume-Volume].How many liters of HF gas will be produced when 30.0 liters of hydrogen reacts ? Equation:h2+f2--->2HF i need help
March 30, 2009 by Dom

Chemistry
Why did you need to know the density of the bleach solution? Why didn't you measure the density of h2o2 solution as well? Stoichiometry lab problem
October 28, 2012 by HELP PLEASE

Stoichiometry
So I have this question it reads Consider the generic chemical reaction How many moles of B are required to completely react with 2A + 3B ==> 3C 1. 6 mol of A 2. 2 mol of A I won't put them all just guide me in the right direction please
October 5, 2011 by Monique

Honor Stoichiometry
2AgNO3 + BaCl2 ==> 2AgCl + Ba(NO3)2 How many grams of silver chloride are produced from 5 g of silver nitrate reacting with an excess of barium chloride?
March 23, 2011 by Brit

Chem.. stoichiometry
How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is: C + H2O → CO + H2 Is this equation balanced?
May 3, 2013 by Jenna Woodruff

applying stoichiometry
nitrogen + hydrogen----------> ammonia How many grams of ammonia can produced from 3.47 moles of hydrogen?
February 5, 2012 by danielle

Chemistry (Stoichiometry)
what mass of so2 is produced from the reaction between 31.5g of s8 and 8.65g of o2? I know how to find the limiting reagents and all but I need a little help knowing how to find the mass of the product.
May 3, 2010 by Jill

Stoichiometry
A gas mixture at 27 C and 750 torr contains acetone vapor with 70% saturation. Calculate the temperature to which the gas must be cooled, at constant pressure to condense 40% of the acetone.
October 10, 2012 by Annie

Chemistry
What volume of carbon monoxide gas (at STP) is needed when 1.35 Moles of oxygen gas react completely in the following equation. 2CO + O2 > 2CO2 please show your work I'm having trouble with Gas Stoichiometry.
April 16, 2012 by Randy

Stoichiometry
In the decomposition of 2.5 moles of Chromium Hydroxide how many moles of water are produced? Please be VERY descriptive on how to do this. I've been out of school a very long time and am expected to take a test on it tomorrow.
May 23, 2012 by Rebecca

Solution Stoichiometry
If 75.0 mL of an AgNO3 solution reacts with enough Cu to produce .25g Ag by single displacement, what is the molarity of the initial AgNO3 solution if Cu(NO3)2 is the other product?
March 29, 2009 by Anonymous

chemistry
I cannot figure out how to work this stoichiometry problem with the given equation: Mg+2HCl-->MgCl2+H2 What volume of hydrogen is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl What do you not understand about it? It is a limiting reagent problem...
February 5, 2007 by Carter

CHEMISTRY STOICHIOMETRY!!!!!!!!
AN an antacid tablet contains 0.1g of magnesium hydrocarbonate, what nass of stomach acid, HCL, will it neutralise? Wine is made by the fermentation of the sugar in grapes. Surose-> Ethanol+Carbondioxide. Whta massof ethanol can be obtained from 6.00kg of sucrose?
November 10, 2007 by akan

Dr. Bob?/chemistry help
i have a final tomorrow and im allowed to have notes. however i lost my notes on stoichiometry. can someone give me a site that will help with balancing equations, performing calculations: mol, g, liters/gas and reagent/% yields?
June 9, 2009 by Chris

applying stoichiometry
10.0 g aluminum reacts with 66.5g bromine to form 65.0g aluminum bromide. determine the limiting reactant and calculate the theoretical and percent yield. once the reaction has occured as completely as possible, what mass of the excess reactant is left?
February 5, 2012 by danielle

Chemistry
I am working on a redox stoichiometry lab. I need to calculate the moles NaBO3*4H2O. Mass=1.0133g in 100mL solution In my experiment I used 9.98mL and titrated in with KMnO4. I'm really confused about how to calculate the moles. Thanks for any help!!!!
March 17, 2012 by Sheena

chem stoichiometry
Acetylene(C2H2) burns in oxygen to form carbon monoxide and water. How many liters of oxygen(at STP) are needed to burn 25.0 L of acetylene (at STP)?
April 14, 2012 by linda

Chemistry
Im's So confused about stoichiometry. My question is this use stoichiometric calculations to predict the mass of solid product fromed in the reaction from the knwon mass of sodium hydrogen carbonate used. Balenced equation: 4NaHCO3 = 4Na + 2H2O + 4CO + 3O2
November 1, 2008 by Lindsay

stoichiometry
What mass of solid aluminum hydroxide can be produced when 50.0 mL of 0.200 M aluminum nitrate is added to 200.0 mL of 0.100M potassium hydroxide?
February 26, 2008 by omar

chemistry (science)
What volume of methanol is formed if 2.8610^11 of methane at standard atmospheric pressure and 25 degree celcius is oxidized to methanol? The density of CH3OH is 0.791g/mol . Assume that the oxidation of methane to methanol occurs in a 1:1 stoichiometry.
February 15, 2010 by beeni

Chemistry
Why do we need to use amount in moles to solve stoichiometry problems? Why can't I just convert from mass to mass? I'm not sure how to answer. I think I know the answer and just can't formulate it into words.
March 4, 2010 by Ana

chemistry!
i lost my notes for Stoichiometry and have a final tomorrow. ASAP would be appreciated. im trying to find a site that can help me with balancing word equations calculations:mol,g,liters-gas and determining limiting reagent and % yields. please please please help me.
June 9, 2009 by chris

chemistry
Stoichiometry 0.083grams of lead nitrate, Pb(NO3)2, in solutions mixed with 0.300g of sodium iodide in solution. This results in the formation of a yellow precipitate of lead iodide. Calculate the weight of the precipitate.
September 18, 2009 by Anonymous

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