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April 24, 2014

Search: How many moles of N2 will be consumed when 1.60 moles of H2 react completely in the following equation? N2 + 3H2 --> 2NH3

Number of results: 4,131

chemistry
Initially, there are 33 moles of A and 0 moles of B. How many moles of A and B will be present after the system reaches equilibrium? a) 33 moles A; 0 moles B b) 0 moles A; 33 moles B c) 3 moles A; 30 moles B d) equal amounts of A and B The answer is given as "C" but I dont ...
Wednesday, April 27, 2011 at 9:04pm by Adam

Chemistry
I can not determine the answer for this problem...can someone please help me? Determine the number if moles of MgO that form from the reaction of 4.4 moles of O2 in the following unbalanced reaction: Mg + O2 ----> MgO The balanced equation is: 2Mg + O2 -----> 2MgO a. 1.1...
Thursday, September 10, 2009 at 11:42am by Jessica

Chemistry
Consider the gas-phase equilibrium A ⇌ B. In a series of experiments, different initial amounts of A and B are mixed together, and the mixture in each case is allowed to come to equilibrium. Which one of these experiments would yield values for the amounts of A and B ...
Monday, March 8, 2010 at 9:51pm by Val

Chemistry
3Cu+8HNO3--> 3Cu(NO3)2+ 2NO+4H2O How many moles of HNO3 are required to react with 6 moles of Cu? How many moles of Cu(NO3)2 are produced when 3 moles of Cu react? How many moles of Cu must react to produce 4 moles of NO? If 4 moles of NO are produced, how many moles of H2O...
Thursday, July 24, 2008 at 6:30pm by Andy

chemistry
How many moles of NaOH are in 23.5 mL of a 1.50 M solution? 1. 0.0353 moles 2. 35.26 moles 3. 16.7 moles 4. 0.0235 moles
Tuesday, November 29, 2011 at 3:12am by katie

Chemistry
Consider the gas-phase equilibrium A ⇌ B. In a series of experiments, different initial amounts of A and B are mixed together, and the mixture in each case is allowed to come to equilibrium. Which one of these experiments would yield values for the amounts of A and B ...
Monday, March 8, 2010 at 11:16pm by Val

Chemistry
Given the balanced equation representing a reaction : 2Fe+ 3Cu^2+ --> 2Fe^3+ +3Cu When the iron atoms lose six moles of electrons, how many moles of electrons are gained by the copper ions? (1) 12 moles (2) 2 moles (3) 3 moles (4) 6 moles how would i even start solving a ...
Sunday, February 16, 2014 at 5:16pm by Anonymous

chem.(sci)
___NH3+___O2->N2+H2O (this is not balanced) how many moles of oxygen react with 0.23 moles of NH3? HOW many moles moles of N2 will be produced when reacted with 5 mol of O2?
Thursday, January 24, 2013 at 6:10pm by tyneisha

Chemistry
Determine the # of moles of Al2S3 that can be prepared by the reaction of 0.400 moles of Aluminum with 0.700 moles of Sulfur, and Also find the # of moles of reactant in excess
Saturday, May 7, 2011 at 11:00am by Denise

GK..please check...Chemistry Help Please
Moles of S203^2- = (molarity)(volume): =(0.032400 mol/L)(0.053 litres S203^2-) = 0.03240 moles S203^2- Moles if I2 based on Equation #2: Moles I2 = (1/2)( 0.03240 moles S203^2-) = .00086 moles I2 Moles of ClO^- based on Equation #1: Moles ClO-(aq) = (2/3)(.00086 moles I2) = ....
Wednesday, October 22, 2008 at 9:06pm by Sara

ELAC
Consider equation 3A+B=C+D. You react 4 moles of A with 2 moles of B. Which of the following is true? 1) L.R. is one with higher molar mass 2) A is L.R. because you need 6 moles of A and have only 4 moles 3) B is L.R. because you have fewer moles of B than A 4) B is L.R. ...
Saturday, September 11, 2010 at 5:11pm by Melissa

Chemistry
(0.75 moles Al(NO3)3/L Al(NO3)3) x 0.040 L Al(NO3)3 = ??moles Al(NO3)3 I am unsure how to find the factor to convert moles Al(NO3)3 into moles NO3. i think that if i do the first section, you get .03 moles as your answer for moles of Al(NO3)3, but I am not sure. how can i ...
Tuesday, August 23, 2011 at 5:45pm by M

Chemistry
A few questions...how many grams are in 48.7x10^24? I don't know how to convert atoms to grams. I can do moles to grams or moles to atoms, but not atoms to grams. My other problem is how do you convert moles to moles as in "how many moles of Cu2O are needed to produce 2.3 ...
Monday, April 20, 2009 at 5:35pm by Angeline

chemistry
How many grams of NO2 will be produced when 5.00 moles of NO react? I have 5 moles of NO2 produces 5 moles of NO (1:1ratio) mass (g)=5 moles times 16.02g/mol=80.1g
Tuesday, September 22, 2009 at 1:27am by jo

chemistry
C6H12O6(s) +6CO2(g) +6H2O9g) 1) given 2 moles of glucose and 14 moles of O2, how many moles of CO2 could be produced? 2) which is the limiting reactant ? 3) how many moles of the excess reactant remain?
Sunday, May 23, 2010 at 4:15pm by Mickey

Chemistry
When a mixture of 10 moles of SO2 and 15 moles of O2 was passed over a catalyst, 10 moles of SO3 was formed. how many moles of SO2 and O2 did not enter into combination?
Friday, June 22, 2012 at 11:36am by Simran

science
from the balanced equation 4NH3 +7O2 - 4NO2 + 6H2O. How many grams of oxygen are necessary to produce 4.50 moles of NO2? I think its 11 grams or 22 grams but im not sure. please help!! First the number of moles of O2, molesO2= (4/7) moles NO2 Notice those came from the ...
Sunday, March 18, 2007 at 5:25pm by Britney

chemistry
hi, I have redone this question. Is this right. How many grams of NO2 will be produced when 5.00 moles of NO react? 5 moles of NO2 produces 5 moles of NO (1:1ratio) mass(g) = 5 moles * 46g/mol = 230g
Wednesday, September 23, 2009 at 12:26am by jo

Chemistry
2C2H6+7O2=4CO2+6H2O how many moles of H2O are produced when a mixture of 0.427 moles of O2 and 0.150 moles of C2H6 is burned, iv already found moles of H2O for them separately.
Sunday, March 17, 2013 at 3:21pm by Angela

chemistry
A drop of starch is added to a mixture of 97.30 ml of 0.1096 M I2 and 97.20 ml of 0.1098 M Na2S2O3. I've already calculated the moles of I2 to be 10.66408 moles and the moles of Na2S2O3 to be 10.67256. Will the solution be blue even if their moles aren't the same?
Thursday, February 5, 2009 at 6:38pm by jean

chemistry
GIVEN THE FOLLOWING CHEMICAL EQUATION: 3 +Cu +8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O. 1).HOW MANY MOLES OF Cu(NO3)2 ARE PRODUCED WHEN 3 MOLES OF Cu REACT? 2).HOW MANY MOLES OF Cu MUST REACT TO PRODUCE 4 MOLES OF NO? 3). If 4 moles of NO ARE PRODUCED HOW MANY MOLES OF h2o are also ...
Monday, July 14, 2008 at 6:58pm by Persia

chemistry
For the combustion of ethane, beginning with 2.6 mol of CH3CH3, 2CH3CH3(g) + 7O2(g) → 4CO2(g) + 6H2O(g) a. how many moles of O2 are required to completely consume the CH3CH3? 9.1 moles b. how many moles of CO2 are obtained when the CH3CH3 is completely combusted? 5.2 ...
Monday, February 13, 2012 at 2:10pm by krystal

Chemistry
How do you find the ratio of moles of oxygen to moles of tin? What would be the Empirical formula of tin oxide from the result of ratio? From my calculations I got the moles as: Moles of oxygen = 1.761 x 10^-2 Moles of Tin = 8.944 x 10^-3 Thanks!
Saturday, February 11, 2012 at 4:40pm by Jake

Chemistry
Consider equation 3A+B=C+D. You react 4 moles of A with 2 moles of B. Which of the following is true? 1) Limiting reactant (L.R.) is one with higher molar mass 2) A is L.R. because you need 6 moles of A and have only 4 moles 3) B is L.R. because you have fewer moles of B than ...
Saturday, September 11, 2010 at 5:18pm by Melissa

Chemistry
Calculate the average disappearance of A between t=0 min and t=10 min in units of M/s. 0 min there are .065 moles of A 10 min there are .051 moles of A 20 min there are .042 moles of A 30 min there are .036 moles of A 40 min there are .031 moles of A The total volume is 100.0 ...
Friday, November 13, 2009 at 6:04pm by Anonymous

chemistry
When 1.24g of an organic compound with the formula CxHyOz is burned in excess oxygen, 1.76g of carbon dioxide and 1.08g of water vapor are obtained. What is the empirical formula of the compound? Determine the moles of CO2 in 1.76grams, that will give you the moles of C in the...
Tuesday, August 23, 2005 at 6:22pm by kevin

chem1 WORD PROBLEM!!
6. how many grams are in 4 moles of Be (OH)3? 7.How many atoms are in 4 moles of C6H12O6? 8.how many moles are in 12.04x10 23 to the power molecules of hamburgers? 9. how many molecules are in grams of Helium gas (He2)? hint:convert then moles then moecules
Thursday, December 6, 2012 at 6:51pm by tyneisha

chemistry
Equation- Mg + 2HCl -> MgCl2 + H2 What volume of hydrogen at STP is produced from the reaction of 50.0 g of Mg and the equivalent of 75g of HCl? To get the volume of hydrogen, you need to know how many MOLES of hydrogen are produced. To know this, you need to know how many ...
Sunday, January 28, 2007 at 4:59pm by student

Chemistry
If 8.00 moles of NH3 reacted with 14.0 moles of O2, how many moles of H2O will be produced? 4NH3 (g) + 7O2 (g) --> 4NO2 + 6H2O (g)
Sunday, December 11, 2011 at 8:58pm by Argh

Chemistry
if you add 0.056 moles of HC2H3O2 to 0.064 moles of NH3, how many moles of each are actually neutralized?
Monday, November 7, 2011 at 9:38am by Cheryl

Chem
Calculate the value of Qc for the reaction above if 2.30 moles of NO2, 1.50 moles of NO, and 1.20 moles of O2 are placed in a 3.50 liter container at 30C. Kc = 0.440 at this temperature.
Wednesday, February 5, 2014 at 7:11pm by Raj

Chem II - Equilibrium
For the reaction at 430 degree C, H2 + I2 <=> 2HI Kc = 54.3. Initially 0.714 moles of H2 and 0.984 miles of I2 and 0.886 moles of HI are placed in a 2.40 L vessel. The equilibrium concentration of H2 and I2 are _____. Ok, I tried this by changing the moles to M by ...
Monday, June 16, 2008 at 11:57pm by Ken

CHEM !(MOLE) PLZ HELP!
1.How many grams are in one mole silicon? 2. how many moles are in 128 grams of oxygen gas (O2)? 3.How many molecules are in 2 moles of AIO? 4.How many moles are in 18.06 x 10 to the 23 power? 5. how many moles are in 100 grams of CH4?
Thursday, December 6, 2012 at 6:47pm by tyneisha

chemistry
Calculate the number of grams in each of the following: A)0.5 moles of F2 B)10.25 moles of H2 C)11.3 moles of BaSO4
Sunday, February 13, 2011 at 9:06am by twynna

chemistry
What is the total pressure in a 4.00 L flask at 298 K, that contains 2.6 moles of He, 0.8 moles of Ne, 1.6 moles of O2?
Thursday, March 29, 2012 at 11:12pm by marie

Chemistery
If you have 1.8 moles of magnesium and 3.2 moles of chlorine, what is the product of the reaction. what is the limiting regent? what is the Theoretical yield in grams and moles? show work?
Thursday, March 24, 2011 at 1:12pm by Zahid

chemistry
4 moles CO, 5 moles N2 and 2 moles C2H4 are placed in a 5 liter vessel at 27 degree celsius . the ratio of kinetic energy per molecule of CO2, He and NH3 is
Thursday, May 17, 2012 at 2:04pm by kanika

chemistry
4 moles CO, 5 moles N2 and 2 moles C2H4 are placed in a 5 liter vessel at 27 degree celsius . the ratio of kinetic energy per molecule of CO2, He and NH3 is
Thursday, May 17, 2012 at 2:06pm by kanika

Chemistry
Did I do these right? Can someone let me know if I did them correctly? I had someone help me with the problems but know I want to make sure their the right answers? 1. Methane burns in oxygen according to the following equation: CH4 + 2O2 ----> CO2 + 2H2O What is the mass ...
Tuesday, September 8, 2009 at 4:22pm by Jessie T

chemistry
If 1/2 moles of 02 react with 24 moles of hydrogen, can 2 moles of water be produced?
Wednesday, June 15, 2011 at 5:28pm by Zach

Chemistry (stoichiometry
(This homework question has been removed due to a copyright claim submitted by K12, Inc.) _----------_ [" okay this is what i got and im not sure if i did it right nor do i know if i answered everything the questions wanted so could you help me out please"] _----------_ ANSWER...
Friday, December 17, 2010 at 7:17pm by Samantha

Chemistry
Find the mininum ammount of 5.0 M HNO3 needed to dissolve 2.72 g of Cu (s). I have the balanced equation here: 2NO3-(aq)+8H+(aq)+3Cu(s)-->2NO(g)+4H2)(l)+3Cu2+(aq) Obviously it is a 2 moles NO3- to 3 moles of Cu (s) ratio. I converted grams Cu to moles (0.04280)), then ...
Friday, May 7, 2010 at 9:03pm by Phat Pat

Chemistry
How many mole of H2 will be produced if 0.500 grams of magnesium is reacted with 10.00mL of 2.0 M HCl? I've concluded the answer is 0.02 moles of H2, but I'm doubting myself a lot because I don't understand the aspects of the balanced chemical equation and how that affects the...
Saturday, October 22, 2011 at 8:42pm by Martin

CHEMISTRY
2H2S + 3O2 → 2H2O +2SO2 given the balanced equation, if 4 moles of hydrogen sulfide react: How many moles of oxygen consumed? How many moles of water and sulfur dioxide are produced?
Monday, May 21, 2012 at 11:16pm by Theodore

CHEM! (SCIENCE) NEED HELP
How many moles of water will form if the reaction has 9 moles of Cu? how many moles of NO will form if the reaction has 9 moles of Cu? 3Cu+8HNO3->3Cu(NO3)2+4H2O+2NO
Thursday, January 24, 2013 at 6:06pm by tyneisha

chemistry
if 0.5 moles of H2SO4 combine with 0.2 moles of CaSO4 then how many moles of Ca(OH)2 will be there?
Thursday, July 14, 2011 at 4:44am by richa

chem
Assuming that you have 0.4g of Y(OH)3, calculate the mass of of BaO2 required to react stoichiometrically (1Y:2Ba:3Cu) to produce YBa2Cu3O7. Now calculate the mass of of CuO required to react stoichiometrically (1Y:2Ba:3Cu) to produce YBa2Cu3O7. please help!! .4gY(OH)3> ...
Thursday, October 26, 2006 at 9:20am by mary

Chemistry=MOLES!
I'm having trouble converting moles to grams and finding the mass of molecules. Problems I'm stuck on: What is the mass in grams of .99x10^49 Sodium Chloride Molecules? and How many moles of Cu are in 9.61 grams? and How many moles are in 5.94x10^45 Ne atoms? I just really ...
Tuesday, January 1, 2008 at 1:21pm by Justin

chemistry
The pH of a solution prepared by mixing 45 mL of 0.183 M KOH and 65 mL of 0.145 M HCl is i solved it but my answer is wrong. the right one is 1.97. am i missing a step? moles of HCl left over = (moles of HCl) ( moles of KOH) moles of HCl left over = (0.009425 mol) ( 0....
Tuesday, November 23, 2010 at 4:43pm by ben

chemistry
CoCl3(aq) + K2S(aq) yield Co2S3(s) + KCl(aq) How many moles of KCl would be produced when 0.470 moles of Co2S3 are produced in the above unbalanced reaction? How many moles of K2S would be required to react with 0.940 moles of CoCl3? How many moles of K2S would be required to ...
Friday, November 12, 2010 at 6:29pm by sarah

Chemistry
2NaOH+2Al+2H2O --> 2NaAlO2+3H2 here is the reaction. If i am trying to find the mass of hydrogen produced and i am trying to convert .95 moles Al to moles H, which number from the reaction do I use for H when converting from moles to moles? Do I 6 because that's the number ...
Friday, March 9, 2012 at 2:11am by Erica

chemistry
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 2.46 moles of CO2 react completely? moles
Tuesday, January 20, 2009 at 6:38pm by bob

chemistry
if you have 5 moles of conjugate acid, 2 moles of base, and 2 moles of acid. What is the dissociation constant for his reaction and the temperature is 30 degree celcius?
Thursday, September 16, 2010 at 10:06pm by Josie

Chemistry
0.300 moles of bromine gas (Br2) and 0.500 moles of chlorine gas (Cl2) react to for tribromochlorine (Br3Cl). how many moles of this product will form ?
Sunday, August 11, 2013 at 2:43pm by kate

CHEM
given the general chemical equation, A yields 3C + D , a. how many moles of C can be produced from one mole of A? b. how many moles of D can be produced from four moles of A?
Thursday, April 15, 2010 at 10:55pm by Sienna

Chemistry
Calculate the moles of oxygen gas needed t burn 1.22 moles of ammonia, NH3(g). Find the moles of nitrogen dioxide gas and gaseous water produced.
Sunday, March 20, 2011 at 3:05pm by franci

chemistry
if 7.o moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end?
Tuesday, September 4, 2012 at 7:29pm by Anonymous

Chemistry
To convert the number of moles of H20 to moles of NH3? 1. H=2(1.008)= 2.01 2. 0=1(16.0) = 16.0 Total = 18.01 =# of moles of H20???? then what do I do Am I doing it right so far? thank you!
Saturday, October 1, 2011 at 7:49pm by Connie

Chemistry
what is the molecular formula of a compound that is 54.5% C, 9.09% H, and 36.4% O. with a molecular weight of 176g/mol. A)C8H16O4 B)C4H8O2 C)C7H12O5 D)C9H18O3 Assume you have 100 g of the substance, then you have 54.5g of C, etc. Moles C= 54.5/12=4.54 mol Moles H= Moles O= ...
Wednesday, October 18, 2006 at 5:06pm by Justyna

chem
How many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas? What is the limiting reagent?
Sunday, June 1, 2008 at 8:43pm by Anonymous

Chemistry
How many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas? What is the Limiting Reagent?
Wednesday, March 10, 2010 at 10:10pm by Fred

Chemistry
How many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas? What is the Limiting Reagent?
Wednesday, March 10, 2010 at 10:11pm by Fred

chemistry
Under an O2(g) pressure of 1.00 atm, 30.9 cm3 of O2(g)at 25C dissolves in 1.00 L H2O at 25C. Assuming that the soln volume remains at 1.00L, what is the Molarity of a saturated O2(aq) soln at 25C when partial pressure O2=1 atm? DRBOB222 said to: Convert 30.9 cc O2 at 25C to ...
Wednesday, August 31, 2011 at 11:20am by Holly

chemistry
A gaseous mixture containing 6 moles of oxygen, 8 moles of helium and 6 moles of carbon dioxide in a container under a pressure of 40 atm. Calculate the partial pressure of th3 individual gases.?
Thursday, May 30, 2013 at 12:22am by sagar

Honors Chemistry (stoichiometry)
Can someone check and make sure I'm doing these problems right? Thanks so much!! 1. N2 + 3H2 ==> 2NH3 : How many moles of hydrogen are needed to completely react with two moles of nitrogen? ==> I got 6 moles. 3. Zn + 2HCl ==> ZnCl2 + H2 : How many moles of hydrogen ...
Wednesday, November 4, 2009 at 11:41pm by Emily

Chemistry
What is the solubility of CuCl when it is in a solution of 0.35 M NaCl?(CuCl has Ksp=1.9 x 10^-7) The Ksp is given by Ksp=[Cu+][Cl-] if x=[Cu+] then in our mixture we have x moles l^-1 [Cu+] x moles l^-1 [Cl-] 0.35 moles l^-1 [Cl-] from the NaCl (there is also 0.35 moles l^-1...
Tuesday, April 10, 2007 at 2:42pm by Chrissy

chem
2NO(g) + O2(g) = 2NO2 If there are .02 moles of O2, .04 moles of NO, and .96 moles of 2NO2, calculate Kp if the total pressure is .2 atm.
Sunday, June 1, 2008 at 4:37pm by tina

chemistry
The left side of a balanced chemical equation is shown below: K2Cr2O7 + 4H2SO4 + 3SeO2 If 0.600 moles of K2Cr2O7, 2.800 moles of H2SO4 and 1.500 moles of SeO2 are brought together and allowed to react, then
Friday, October 18, 2013 at 12:20am by Anonymous

Chemistry
Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few questions...how many grams are in 48.7x10^24? I don't know how to convert atoms to grams. I can do moles to grams or moles to atoms, but not atoms to grams. My other problem is how do you convert moles to moles as ...
Monday, April 20, 2009 at 9:05pm by Angeline

Chemistry
Can you convert density to moles? I am given the density of a substance [0.789 g/mL] but I need to know the number of moles for the equation. You cannot convert density to moles, unless you also know the volume and the molecular formula. (density) * Volume = mass = (# of moles...
Thursday, December 28, 2006 at 8:12pm by Alexandria

chemistry
A sample of 690. moles of O2 reacted according to the balanced equation, 4Al+3O2=2Al2O3 after reaction, 163 moles of O2 remained. calculate the moles of Al2O3 formed. Ive tried this problem many times and i keep getting it wrong. please help! thanks
Tuesday, February 19, 2008 at 2:33pm by anonymous

GK..please check...Chemistry Help Please
Sorry not leting me post entire thing on last post..can you please check Thank- YOu # Chemistry Help Please - GK, Wednesday, October 22, 2008 at 11:24am Reaction #1 (properly balanced): 2ClO-(aq) + 4H+(aq) + 6I-(aq) > 3I2 + 2Cl-(aq) + 2H2O Reaction #2 (properly balanced): ...
Wednesday, October 22, 2008 at 9:03pm by Sara

Chemistry
An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024g/mL. Calculate the molality, mole fraction, and molarity of NH4Cl in the solution. I know the formulas needed but I'm not sure where to start. M = moles solute/1 L solution m...
Tuesday, January 24, 2012 at 4:08pm by S

Chemistry
How many moles of aluminum chloride can be produced if you start with 8 moles of aluminum and 9 moles of chlorine?
Tuesday, May 24, 2011 at 3:12pm by Nina

CHemistry
im not sure how u solve these types of problems... How many moles of NaOH are contained in 200ml of a 0.1M of NaOH? How many grams of NaOH are contained in 500ml of a .5M solution of NaOH? <<How many moles of NaOH are contained in 200ml of a 0.1M of NaOH? >> A 0.1 ...
Saturday, April 21, 2007 at 10:21pm by Phil

chemistry
A gaseous mixture containing 5 moles of H2 and 7 moles of Br2 reacts to form HBr. Write a balanced chemical equation. Which reactant is limiting? What is the theoretical yield in moles? What is the theoretical yield for this reaction in grams? How many moles of excess reactant...
Sunday, December 4, 2011 at 5:25pm by Zoe

DrBob222 follow up
Thank you for your reply. The Zn in grams 1.80= .028 moles Zn and Cl in grams 0.90= .025 moles Cl The question was: What is the EXPERIMENTAL empirical formula of zinc chloride? Determine the simplest whole number ratio of moles of zinc used, to moles of chlorine reacted in the...
Monday, October 26, 2009 at 10:07pm by Madison

CHEmistry
The balanced reaction equation for combustion of Mg is: 2 Mg + O2 --> 2 MgO. In the reaction vessel you have 1.0 moles of Mg and 0.30 moles of O2. What is the limiting reactant? How many moles of MgO can you possibley make?
Sunday, October 9, 2011 at 10:07pm by Amanda

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...
Tuesday, September 8, 2009 at 1:27pm by Jessie

CHEMISTRY
for the reaction system H2 + X2 <->2HX Kc = 24.4 at 300 K a system made up fron these components which is at equilibrium contains 0.150 moles of H2 and 0.600 moles of HX in a 3.00 liter. calculate the number of moles of X2 present at equilibrium.
Wednesday, October 26, 2011 at 2:33pm by HELPP

Chemistry
A student mixed 15.0 mL of a solution of 0.0200 M ferric chloride FeCl3, with 25.0 mL of water. Calculate the moles of iron ion, Fe +3 in the resulting solution. (I think this is a Dilution problem, but I wasn't really sure how to start it out. Any help would be greatly ...
Monday, January 23, 2012 at 8:20pm by S

chemistry
What is the limiting reagent for 6HCl + Fe2O3 = 2FeCl3 + 3H2O ? 6HCl has 18.44 moles and Fe2O3 has 2.91 moles. Also how many moles would FeCl3 produce?
Monday, February 25, 2013 at 12:37am by Amber

chemistry
What is the limiting reagent for 6HCl + Fe2O3 = 2FeCl3 + 3H2O ? 6HCl has 18.44 moles and Fe2O3 has 2.91 moles. Also how many moles would FeCl3 produce?
Monday, February 25, 2013 at 12:39am by Amber

Chemistry
Is this correct? What is the experimental empirical formula of zinc chloride? Determine the simplest whole number ratio of moles of zinc used, to moles of chlorine reacted in the zinc chloride that was produced..028 moles of Zinc .025 moles of Cl .025 moles of Cl is smaller ....
Monday, October 26, 2009 at 9:38pm by Madison

chemistry
for the reaction: c3h8+5o2=3co2 +4h2o how many moles of o2 will be produced in the complete combustion of 0.75 moles of c3h8? I think the ans is 2.25 moles of co2, but i am not sure because i still dont think I understand this fully please help
Saturday, October 23, 2010 at 7:15pm by Lillian

Chemistry
Estimate the number of moles of gas (and mass of gas assuming that it is all N2) inside your family car (or a friends if you don't have one). If the amount of gas was compressed at constant temperature to fit inside a coke can what would the pressure inside the coke can be? ...
Friday, May 24, 2013 at 3:47pm by Timoefy

science
At a pressure of 2.00 atm, a sample of air consists of 0.20 moles of nitrogen, 0.65 moles of oxygen and 0.15 moles of argon. What is the partial pressure of the oxygen?
Tuesday, October 30, 2012 at 12:37pm by Mickeykalle

Organic Chemistry
A half-life of a H2O2 solution at a certain condition is 4 weeks. You have a 100 mL of 1.00M H2O2 solution. How many moles of H2O2 will be left in the solution after the following weeks? 04 weeks after: moles 08 weeks after: moles 16 weeks after: moles 20 weeks after: moles
Sunday, July 1, 2012 at 6:56pm by Ashley

Chemistry
Methane gas (carbon tetrahydride) reacts with oxygen by combustion: CH4 + 2O2 -> CO2 + 2H2O a.)How many moles of methane are needed to produce 3.5*10-4 moles of carbon dioxide? b.)How many moles of oxygen are needed to react form the 3.5*10-4 moles of carbon dioxide? c.)How...
Sunday, November 3, 2013 at 7:07pm by Kelsi

chem
how would you find the ratio of moles of copper produced to moles of iron used is the moles of iron used is .067 and the moles of copper produced is .01?
Sunday, April 27, 2008 at 5:16pm by Kayla

sci/chemistry
when 1.87 g of gypsum(hydrated calcium sulfate) was heated to constant mass, it lost 0.39 g of water. What is the formula of gypsum? YOu know it is of the form: CaSO4.XH2O the idea here is to find x. calculate the number of moles of water in .39g. Calculate the number of moles...
Thursday, March 22, 2007 at 3:35am by jas

ap chemistry
The system CO2(g) + H2(g) *) H2O(g) + CO(g) is at equilibrium at some temperature. At equilibrium a 4.00 L vessel contains 1.00 mole CO2, 1.00 mole H2, 2.40 moles H2O, and 2.40 moles CO. How many moles of CO2 must be added to the system to bring the equilibrium CO ...
Wednesday, January 30, 2013 at 6:32pm by cheri

AP Chemistry
The system CO2(g) + H2(g)<->H2O(g) + CO(g) is at equilibrium at some temperature. At equilibrium a 4.00 L vessel contains 1.00 mole CO2, 1.00 mole H2, 2.40 moles H2O, and 2.40 moles CO. How many moles of CO2 must be added to the system to bring the equilibrium CO ...
Monday, December 2, 2013 at 9:18pm by Gabriella

moles to moles
Two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water. How many molecules of water are produced from 2.0 * 10 23 power molecules of oxygen? How many moles of water are produced from 22.5 moles of oxygen In each case, multiply the number ...
Wednesday, January 24, 2007 at 8:32am by iearn

Chemistry
A half-life of a H2O2 solution at a certain condition is 4 weeks. You have a 100 mL of 1.00M H2O2 solution. How many moles of H2O2 will be left in the solution after the following weeks? 04 weeks after: moles 08 weeks after: moles 16 weeks after: moles 20 weeks after: moles
Sunday, July 1, 2012 at 6:57pm by Ashley

chemistry
The first step in the Ostwald process for making nitric acid is the formation of NO as follows; 4HN3 + 5O2 makes 4NO + 6 H2O. According to the equation, 5 moles of NH3 will react stoichiometrically with blank moles of O2 to form blank moles of NO. I can't figure out how to ...
Tuesday, October 19, 2010 at 8:19am by lavonne

Chemistry
CaSO4.2H2O ==> CaSO4 + 2H2O moles CaSO4.2H2O = 15.00 g x (1 mole CaSO4.2H2O/172.172) = 0.08712 moles. moles CaSO4 = same. grams CaSO4 = moles CaSO4 x molar mass CaSO4 = ?? Wait,.. how do I know the moles CaSO4? do I do .08712* CaSO4's gfm?
Monday, November 9, 2009 at 12:09am by c

chemistry
how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions? well normally you go moles=grams/molar mass than M= moles/L but when looking for grams? what do you do........multiple .250 by .100 than divide by the molar mass of ...
Tuesday, December 14, 2010 at 4:17pm by STACY

chemistry
If 5.50 moles of aluminum are reacted with 4.55 moles of copper(II) chloride, how many moles of aluminum chloride are porduced by the limiting reactant?
Monday, February 13, 2012 at 8:52pm by Tara

Analytical Chemistry
I am trying to find moles of IO3 from Cu(IO3)2 10 ml and standardized sodium thiosulfate (Na2S2O3.5H20) .28 M. My calc is: 0.28 Moles Na2S2O3.5H20 * (2 moles of S2O3/1 mole Na2S2O3.5H20)* (2 moles of (IO3)/1 mole Cu(IO3)2= (1.12/.01 L) but that is why to high for (M) what am I...
Monday, October 11, 2010 at 10:12pm by Max

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