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September 2, 2015

Search: 12. How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7 g Fe?

Number of results: 20,134

chem
a mean = 0.5, and the standard deviation is 1.84*10^-3 ( gassian statistic apply). How many replicated if the standard error of the mean is not excess 0.001%. Please help, thank you so much
April 22, 2011 by lyn

AP Chemistry
In the reaction below, 23 g of H2S with excess O2 produced 9 g of sulfur. ? H2S + ? O2 → ? S + ? H2O . What is the percent yield of sulfur? Answer in units of %
September 13, 2011 by Tina

AP Chemistry
In the reaction below, 16 g of H2S with excess O2 produced 8 g of sulfur. ? H2S + ? O2 → ? S + ? H2O . What is the percent yield of sulfur? Answer in units of %
September 19, 2012 by CJ

community umuokpu
if 50cm3 of co2 were put in 40cm3 of Oz. Determine the gas that would be in excess and calculate the volume of the gas that would be used
February 9, 2013 by Tessy

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

science help plzzz
1. Which of the following statements best defines tides? (1 point) when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours the rise of ocean water that occurs 12 times a day a giant wave that can be extremely ...
January 17, 2014 by josh

Social Studies
what do you mean by weniers? If you were dropped in the Mediterranean and you have to learn how to survive by yourself, how would you store excess food? Dried foods do well in that area, and dried fruits are very common.
November 15, 2006 by Crystal

chemistry
How much ammonia is produced if 1.80 m3 of hydrogen reacts with 0.5m3 of nitrogen? Also state which reagent is in excess and by how much? Question is related to the Haber process. Please can anyone answer this for me by 02 July 2010. Thanx
June 30, 2010 by Anonymous

Chemistery
How much heat is contained in 4 liter of liquid methanol (CH3OH) when it is completely combusted (excess oxygen) to form carbon dioxide and water. the density of metanol is 0.7918 g/ml. (CH3OH = -638)
October 31, 2010 by Laura

Ap chem
When .4000 g of CH4 is burned in excess oxygen in a bomb calorimeter that has a heat capacity of 324, the temperature increases 6.795 degrees celsius. How much energy is released? (in kJ/mol CH4)
October 20, 2011 by Hannah

Chemistry
Consider the following reaction. CH4(g) + 2 O2(g) CO2(g) + 2 H2O(l) H = -891 kJ Calculate the enthalpy change for each of the following cases. 1.00 103 L methane gas at 719 torr and 26C is burned in excess oxygen.
November 13, 2011 by Bill

Thermochemistry
The standard enthalpy of formation of n-octane is -249.95 kJ/mol. Compute the amount of heat liberated when 5.24 g of n-octane is burned completely with excess oxygen to form carbon dioxide and liquid water.
December 4, 2011 by LaurenB

Chemistry
a 9.85 g sample of an unknown metal M is burned in the presence of excess oxygen, producing the oxide M2O3 (s) and liberating 57.8kJ of heat at constant pressure. What is the identity of the metal? 4M(s) + 3O2(g) yields 2M2O3(s)
November 4, 2012 by Kelly

Chemistry
The combustion of ethane (C2H6) produces carbon dioxide and steam: 2C2H6+702 yields 4CO2 +6H2O How many moles of CO2 are produced when 5.30 mol of ethane are burned in an excess of oxygen?
September 22, 2013 by Mary

math
1.64g of a mixture of cac03 and mhco3 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for neutralization. Calculate the percentage of cac03 and mgc03 in the sample Who helps me
December 21, 2013 by Fai

chemistry
the reaction of 7.10g carbon with excess O2 yields 12.25g of CO2. what is the percent yield of this reaction? I have tried everything and looked through all of my notes and nothing is working for stiochiometry
October 6, 2014 by Heather

Chemistry
An excess of zinc metal is added to 50.0 mL of a 0.100 M AgNO3 solution in a constant-pressure calorimeter. Assuming that the density of the solution is the same as for water, calculate the mass of the solution.
June 30, 2010 by Haley

chemistry
Using Table 9.4, calculate an approximate enthalpy (in kJ) for the reaction of 1.02 g gaseous methanol (CH3OH) in excess molecular oxygen to form gaseous carbon dioxide and gaseous water.
November 5, 2014 by john

Statistics
Consumption of alcoholic beverages by young women of drinking age has been increasing in the United Kingdom, the United States, and Europe (The Wall Street Journal, February 15, 2006). Data (annual consumption in liters) consistent with the findings reported in The Wall Street...
December 16, 2014 by Jackie

Pre-Calculus
A rectangular garden with an area of 250 square meters is to be located next to a building and fenced on three sides, with the building acting as a fence on the fourth side. Let x be the length of the side parallel to the building. 1. Find T(x), the total amount of the fence ...
January 18, 2008 by Courtney

Chemistry
I need to write a hypothesis for a limiting reactant and excess reactant lab. Not sure what to write?
November 11, 2009 by anonymous

Chemistry
given 65g of Zn and 65g of HCl, what is the limiting reactant and reactant in excess in Zn + 2HCl- ZnCl2 + H2
November 1, 2010 by Irene

physics
A negatively charged balloon has 4.5 C of charge. How many excess electrons are on this balloon? Answer in units of electrons
February 26, 2012 by ivan

chemistry
If 80.0 g of bromine is added to 40.0 g of sodium, a) what is the limiting reactant? b) what is the excess mass of the reactant? c) what is the mass of product?
January 23, 2015 by stacey

English
Which clause in this sentence is used as an adjective? When Beowulf arrived, the Danes welcomed him, for they desperately needed someone who could stop Grendel. A. When Beowulf arrived B. the Danes welcomed him C. they desperately needed someone D. who could stop Grendel D ??
April 19, 2015 by Sarah

Chemistry
Given the following chemical equation: 3 Cu + 8 HNO3 = 3 Cu(NO3)2 + NO + 4 H2O. How many moles of HNO3 are required to react with 6 moles of Cu?
July 14, 2008 by Persia

simple chem
what are the highly reactive elements the ones that react with electricity, noble gasses and the less reactive elements
May 31, 2008 by amie

chemistry
how much CO2 can be produced if 100 g glucose is allowed to react with 100 g O2? which is the limiting reactant, oxygen pr glucose?
April 5, 2010 by rachel

Chemistry
2 SO2 + O2 --> 2 SO3 What happens to the total volume when 3L of SO2 react with 2L of O2 to form the max. amount of SO3 possible?
August 18, 2010 by Renate

chemistry
3 MgCl2(aq) + 2 Na3PO4(aq) ==> Mg3(PO4)2(s) + 6 NaCl(aq) How many milliliters of 0.0800 M Na3PO4(aq) will react with 0.060 mol of MgCl2(aq)?
February 28, 2013 by Acrabatisca

econ
In France each unit of labour can produce 3 bottles of wine or 2 shirts. In Portugal each unit of labour can produce 2 bottles of wine or 1 shirt. Which country has a comparative advantage in producing wine? It would seem that France has the advantage. No its Portugal. The ...
May 22, 2007 by Ash

Chem
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 3.27 moles of CO2 react completely?
April 13, 2015 by Alli

ms.sue
so when the assingment asks me about listing characterism of orientalism it refers to who are the arabs and muslims as you describe the following.Arabs are loosely defined as anyone who speaks Arabic or is descended from an Arabic-speaking family. Most (but not all) Arabs ...
November 2, 2006 by minemine

Chemistry
A 20ml of a 1M KOH solution is used to react with sulphuric acid, what is the number of mols of KOH used?
August 16, 2010 by Cassy

Chemistyr
BaCl2(aq) + K2CrO4(aq) BaCrO4(s) + 2 KCl(aq) How many milliliters of 0.1200 M K2CrO4(aq) will react with 0.045 mol of BaCl2(aq)?
February 23, 2011 by Anonymous

Chemistyr
BaCl2(aq) + K2CrO4(aq) BaCrO4(s) + 2 KCl(aq) How many milliliters of 0.1200 M K2CrO4(aq) will react with 0.045 mol of BaCl2(aq)?
February 23, 2011 by Anonymous

chemistry
How much aluminum nitrate can be found when 12 g of aluminum react with lead(II) nitrate? Answer in units of mol
January 22, 2012 by lynn

Chemistry
How to set up to solve the equation 2 KCLO^3 ---> 2KCL + 3O^2 HOW MANY MOLES OF O^2 CAN BE PRODUCED BY LETTING 12.00 MOLES OF KCLO^3 REACT?
March 6, 2012 by Crystal

chemistry
Identify the limiting reactant and determine the mass of the excess reactant remaining when 7.00 g of chlorine gas reacts with 5.00 g of potassium to form potassium chloride.
December 11, 2009 by Rafael Alvarez

chemistry
When NH3 is prepared from 28 g of N2 and excess H2, the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30 g is produced. What is the percent yield?
July 23, 2010 by Anonymous

chemistry
According to the following reaction, how many moles of Fe(OH)2 can form from 175.0 mL of 0.227 M LiOH solution? Assume that there is excess FeCl2. FeCl2(aq) + 2 LiOH(aq) → Fe(OH)2(s) + 2 LiCl(aq)
April 17, 2011 by yr

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
May 7, 2011 by Denise

community umuokpu. Chemistry
if 50cm3 of co3 were put in 40cm3 of O2. Determine the gas that would be in excess and calculate the volume of gas that would be unused
February 9, 2013 by Tessy

Chemistry
Calculate how much acetylene (C2H2) can be produced from 358 g of H2O and an excess of CaC2 if the percent yield for this reaction is 94.5%. CaC2 + 2H2O -> C2H2 + Ca(OH)2
November 25, 2014 by Amanda

physics
A negatively charged balloon has 4.5 μC of charge. How many excess electrons are on this bal- loon? The elemental charge is 1.6 10−19 C. Answer in units of electrons.
March 2, 2015 by Anonymous

Math
1. If one wishes to accumulate a Php 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate Php 50,000 in 15 years 3. Suppose that a particular ...
September 9, 2014 by Isabelle

Math
1. If one wishes to accumulate a Php 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate Php 50,000 in 15 years 3. Suppose that a particular ...
November 3, 2014 by Brianne

CHEMISTRY- PLEASE HELP:)!
Pure lauric acid is melted and the freezing point is determined to be 43 degrees celsius. A solution is made by dissolving .50 grams of paradicholrobenzene into 3.00 grams of lauric acid. Determine the molality of this solution. I got 1.1m. which is right. But then it says the...
April 16, 2008 by Miley

chemistry
A student is working on a research project. The instructions in the book on how to prepare Ni(NH3)6Cl2 say that the percent yield in this preparation is 75.5 %. If the limiting reagent for the preparation is NiCl26H2O, and the student needs 50.0 grams of the Ni(NH3)6Cl2 ...
March 8, 2014 by jody

Chem.
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to form isopentyl acetate (C7H14O2), a fragrant substance with the odor of bananas. CH3COOH + C5H12O -> C7H14O2 + H2O If the yield for the reaction is 45%, how many grams of the product are formed when 3.58 g of ...
October 31, 2010 by Dave

Math
A certain recipe requires 6 2/7 cups of flour and 7 2/9 cups of sugar. A) if 6/5 of the recipe is to be made, how much sugar is needed? Write your answer as a proper or improper fraction: B) if the above ingredients are required for one batch, find the amount of flour needed ...
August 1, 2015 by Karen

biology
If an atom of sulfur (atomic number 16) were allowed to react with atoms of hydrogen (atomic number 1), which of the molecules below would be formed? a.S-H b.H-S-H c.H-S-H | H d.H | H-S-H | H e.H=S=H
December 11, 2008 by Emma

gr12 chem
Both propane and propene react with bromine. State two ways in which these two hydrocarbons can be distinguished in their reaction with bromine
February 5, 2010 by haley

Chemistry
Br2 + 5F2 --> 2BrF5 How many molecules Br2 react with 1.11 x 10^20 molecules F2? I got 2.21 x 10^47 but I feel that's too big and is most likely wrong. Can someone help me?
March 4, 2010 by Ana

chemistry
How many milliliters of 0.205 M NH3 solution will exactly react with 50.0 mL of 0.150 M H2SO4 solution? 2NH3(aq) + H2SO4(aq) → (NH4)2SO4(aq)
October 29, 2010 by bryce

Chemistry
If you react 55g of hydrazine and 55g of oxygen gas, what is the maximum moles of nitrogen dioxide gas that can be made and what is the limiting reagent?
March 1, 2011 by Melanie

Chemistry
In the following reaction, how many liters of oxygen will react with 124.5 liters of propane (C3H8), at STP? C3H8 + 5O2= 3CO2 + 4H2O
September 14, 2011 by Anonymous

chemistry
Given the following reaction: TiCl4 + O2→ TiO2 + Cl2 If 51.44 g TiCl4 react with 82.32 g O2 complete a mass balance table for this reaction.
November 17, 2011 by mary

chemistry
3 Cl2 + 6 KOH go toKClO3 + 5 KCl + 3 H2O How many moles of potassium chlorate form when 2 moles of potassium hydroxide react completely?
November 24, 2012 by linda

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?
January 24, 2013 by tyneisha

Chemistry
A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. What mass of precipitate forms in this reaction?
February 23, 2013 by Eagertolearn

Chemistry
You are given 21.0 mL of a 5.00% solution of NaOH. The solution has a density of 1.02 g/mL. What volume of 0.0895M H2SO4 will you need to completely and exactly react (neutralize) the NaOH?
October 22, 2014 by Kelly

Chemistry
Consider the following chemical equation. Cl2(g) + O2(g) → Cl2O3(g) Assuming all gases are at the same temperature and pressure, how many milliliters of oxygen gas must react to give 3.50 L of Cl2O3?
December 5, 2010 by Kalen

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

chemistry
I need to convert a word problem that I was given into a balanced chemical equation and cannot figure out how i was type it. The problem is: Nitrogen and hydrogen gases react at extreme temperatures and pressures. Any help?
January 8, 2012 by Zoe

Chemistry
Given the following unbalanced equation C4H10 (g) + O2 (g) → CO2 (g) + H2O (l) What mass of water forms if 6.5 L of C4 H10 (g) measured at STP is allowed to react with 32.0 L of O2 (g)measured at 27C and 1.68 atm pressure? Would it be 26.1 (g)
May 2, 2013 by Kim

Chemistry (Check)
i have to fill in the blanks In an ionic compound the charges of the Blank and Blank must balance to produce an electrically Blank Substance. Is it Cation, Anion, then Netural for the last blank And what about this one i don't know. Metallic atoms tend to lose valebce ...
November 15, 2006 by Bryan

Chemistry 1110
If 3 L of hydrogen and 1.5 L of oxygen at STP react to yield water how many moles of water are formed? What gas volume does the water have at a temperature of 100degrees C and 1 atm pressure?
March 13, 2012 by Trina

Intermediate college algebra
Beer cans are right circular cylinders. My algebraic ale and logarithmic lager cans, from snide brewery, have dimensional units called brewskis. The have a volume (in cubic brewskis) equal to the solution of the number of grams of radium 226 remaining after 4860 years when the...
December 12, 2012 by Jen

Intermediate college algebra
Beer cans are right circular cylinders. My algebraic ale and logarithmic lager cans, from snide brewery, have dimensional units called brewskis. The have a volume (in cubic brewskis) equal to the solution of the number of grams of radium 226 remaining after 4860 years when the...
December 13, 2012 by Jen

Chem
Given this reaction: Pb(NO3)2 + 2 KCl --> PbCl2 + 2KNO a. How many milliliters of 2.00 M Pb(NO3)2 will react with 50.0 mL of 1.50 M KCl
March 31, 2011 by stephanie

AED / ASAP PLEASE
150 words needed for How can English language arts teachers create a literacy-rich environment in their classrooms? How can these teachers overcome obstacles to literacy or resistance on the part of students? 150 needed for this Language arts contains both receptive (listening...
November 3, 2008 by troyer0269

physics
just a couple more questions 1.) The power needed to accelerate a projectile from rest to is launch speed v in a time t is 43.0 W. How much power is needed to accelerate the same projectile from rest to launch speed of 2v in a time of 1/2t? 2.)A ball is fixed to the end of a ...
October 20, 2010 by jo

physics
just a couple more questions 1.) The power needed to accelerate a projectile from rest to is launch speed v in a time t is 43.0 W. How much power is needed to accelerate the same projectile from rest to launch speed of 2v in a time of 1/2t? 2.)A ball is fixed to the end of a ...
October 20, 2010 by jo

physics
just a couple more questions 1.) The power needed to accelerate a projectile from rest to is launch speed v in a time t is 43.0 W. How much power is needed to accelerate the same projectile from rest to launch speed of 2v in a time of 1/2t? 2.)A ball is fixed to the end of a ...
October 21, 2010 by jo

Chem Problem
I originally asked you the first question and I got the answer 7.7 but theres other parts to the problem but Im not sure what to do In the preparation of a mustard solution, an individual package of mustard was emptied into a beaker and the mass was determined to be 3.809 ...
October 10, 2012 by Kelli

Chem Problem
I originally asked you the first question and I got the answer 7.7 but theres other parts to the problem but Im not sure what to do In the preparation of a mustard solution, an individual package of mustard was emptied into a beaker and the mass was determined to be 3.809 ...
October 10, 2012 by Kelli

physics
Find the threshold energy that the incident neutron must have to produce the reaction 1 n 0 + 4 He 2---> 2 H 1 + 3 H 1 For this, like the 1 n 0<--- it is supposed to be written like 1 on the top 0 on the bottom next to n. like the atomic number of neutron and the other ...
February 16, 2007 by jaimie

chemistry
Consider the following balanced reaction. What mass (in g) of CO2 can be formed from 743 mg of O2? Assume that there is excess C3H7SH present. C3H7SH (l) + 6 O2 (g) ---> 3 CO2 (g) + SO2 (g) + 4 H20 (g)
March 1, 2010 by candace

AP Chemistry
a 5.15g sample of a hydrocarbon is burned in oxygen, producing 15.6g of carbon dioxide and 8.45g of water. Assuming an excess of oxygen, what is the empirical formula of the hydrocarbon?
September 13, 2011 by Ariday

chemistry
A compound of Fe and Cl is soluble in water. An excess of AgNO3 was added tp precipitate the Cl- as AgCl. if a 1.540g sample of the compund gave 4.082g AgCl, What is the formula of the compound?
November 19, 2012 by evelyn

Chemistry
15. 120 g of sulfuric acid are added to 230.0 g of barium peroxide. Which reactant is in excess and by how much? How much barium sulfate is precipitated in this reaction???? HELP please
December 13, 2012 by John

difficult chemistry
Calculate the molarity of thiosulfate solution if 0.400mg of Kl03 required 100ml of the thiosulfate solution provided that excess kl and hcl were added. Who helps me
January 12, 2013 by Fai

Chemistry
how many moles of sodium oxide are produced when 3.9 moles of of sodium combine with excess oxygen
January 29, 2013 by Chris

Chemistry
suppose you added 26.0 ml of 0.01 M NaOH to the solution, what is the molarity of excess NaOH in the mixture? what is the ph of this solution?
November 19, 2014 by Mollie

biology
How do melosis and sexual reproduction (fertilization) produce offspring that differ genetically from the parents?
June 30, 2008 by chosen

Physical science
Devices that use semiconducters to produce electricity from solar energy are called?
January 16, 2008 by Jordan

physics
does a ball moving at a constant speed around a circular track produce acceleration?
March 9, 2008 by Jason

biology
What process releases energy from food to do work,produce ATP and heatin cells?
June 4, 2008 by chris

physical science
Which acid reacts with KOH to produce the salt KCI? Thank you very much.
January 4, 2009 by Lisa

algebra
How do you complete the square by filling in the two blanks so as to produce a true equation. x^2 - 12x + ---- = (x - -----)^2
April 25, 2010 by dan

chemistry
what mass of potassium hydroxide is required to produce 2.00L of a solution mthat has a pOH of 4.5?
May 8, 2010 by judi

social studies
A _______ uses metal plates and a conducting solution to produce current
June 1, 2010 by nerd nada

science
what volume of benzene ( C6H6 d=0.88g/ml molar mass = 78.11) is required to produce 1.5*10^3 kj of heat
June 30, 2010 by na

Health
1. The use of chemical fertilizers and pesticides to produce food is sustainable. A. True B. False
August 5, 2010 by Christopher

physics
does each of the two lenses used in a microscope produce a magnification of the object being viewed?
October 17, 2010 by andy

chemistry
Determine the weight of Calcium Carbonate decomposed to produce 4 liters of Carbon Dioxide.
March 12, 2011 by Patrick

bio270
In an electrocardiograph a wave of sustained depolarization moving towards a negative electrode will produce:
October 16, 2011 by m

biology
does the human ovum produce any chaemotactic hormones or sugars to attract sperm cells?
February 6, 2012 by ramannachowdary

Chem 1A
Help please! How many moles of NaOH must be added to 1.0 L of 3.0 M HC2H3O2 to produce a solution buffered at each pH? 1) pH= 3.78 2) PH= 6.52
March 15, 2012 by Mackenzie

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