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July 23, 2016

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: 21,998

Chemistry
If I react a phosphorus ylide with trans-cinnamaldehyde, what would the ratio of trans-trans to cis-trans isomer would I likely get?
March 30, 2012 by Sam

chemistry
Why is it important that the sequence of addition of reagents be followed? What could possibly go wrong when this is not followed? Reagents added: 1st: Fe3+ solution 2nd: 2.00 mL 10% NH2OH-HCl (hydroxylamine hydrochloride) 3rd: excess 0.20% 1,10-phenanthroline 4th: 1.00 mL ...
September 15, 2007 by smiley

chemistry
Why is it important that the sequence of addition of reagents be followed? What could possibly go wrong when this is not followed? Reagents added: 1st: Fe3+ solution 2nd: 2.00 mL 10% NH2OH-HCl (hydroxylamine hydrochloride) 3rd: excess 0.20% 1,10-phenanthroline 4th: 1.00 mL ...
September 15, 2007 by smiley

Chemistry
Sulfur (3.26 g) is burned in a constant volume calorimeter with excess O2(g). The temperature increases from 21.25C to 28.22C. The bomb has a heat capacity of 923 J/K, and the calorimeter contains 815 g of water. Calculate ΔU per mole of SO2 formed, for the following ...
October 19, 2010 by Noelle

physics
An oil drop is stationary within an electric field of 490 V/m that is set up between two parallel plates. If the volume of the oil drop is 4 X 10 (-19) m3, how many excess electrons does it carry? (I'll give ya'll just one hint: the fundamental unit of charge e = 1.6 X 10 (-19...
June 29, 2012 by ALICIA

Chemistry
The percent is confusing me, can you please help me set this equation up. How much heat is liberated when 5.00 kg of coal is burned if the coal is 96.2% carbon by mass and the other materials in the coal do not react? (delta)H comb of carbon is -394kJ/mol thank you
August 3, 2015 by Syd

Music
Ok, so this question isn't exactly for school, but i needed help for it, and thought you guys might be able to help me out. Ok, so i am rewriting/rewording lyrics to the song 'Come back to Texas' by Bowling for Soup. (Search the song on Youtube if it will help.) Im rewriting ...
December 1, 2008 by Twila

Chemistry 3
How is it possible for me to tell which of these solutes will produce an acidic solution when dissolved in water? LiOH CH3CO2K H2SO3 KOH NaOH NH4NO3 NaOH NaOH can't be the only one... Molecules that produce OH^- when dissolved in water will be basic. Examples:LiOH, KOH, NaOH, ...
May 24, 2007 by Lindsay

chemistry
thermochemistry chem conceptual. i just want to check my understanding of this Say you got this: 1)A + b=c A=4.0 grams and -91.8kj evolve How do you find change of H ? I guess you convert A to grams and then shove it under the evolved heat ? ie. change of H= -91.8kj/2 mol= 2)...
August 7, 2009 by Jim_R

Chemistry
In fertilizer manufacturing the cimpounds below are mixed together to form a composite fertilizer. My question is: Is there a reaction between SOLID ammonium phosphate, potassium chloride, ammonium nitrate, and superphosphate? (or any combination? or will they react if all are...
March 8, 2012 by Namie

stoiciometry (chemistry)
calculate the theoretical yield of Cu when 53.2g Cu2S react with oxygen. (balanced equation is CU2S+02>2Cu+S02) Please help me figure this homework out. I just dnt get how to get the theoretical yeild. I want to know to be able to do the rest right. Thanks much!
April 15, 2013 by lila

chemistry
A particular brand of toothpaste claims to contain 0.24 wt% sodium fluoride. What mass in grams of fluoride ion would be present in the average amount of toothpaste used to brush one's teeth, about two grams? Now this is a weight percent concentration question, I know that. wt...
May 7, 2015 by frank

chemistry
OKOK I know that I have posted this question but I just don't understand the last part. 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25C. Calculate the Pb2+ and IO3- concentrations when the mixture comes ...
May 16, 2007 by mel

calculus
Find the resultant vector. 1) A force of 35 grams and 45 grams applied at right angles. 57.009 g at 52 with respect to the 35 kg force 2) Velocities of 400 mph due north and 500 mph due east. 640.31 mph at 51 with respect to the 400 mph force 3) Displacements of 90 meters ...
October 5, 2015 by sasha

Chemistry
2MnO4-(aq) +5 H2O2 (aq) + 6H+(aq) -> 5 O2(g) + 2 (Mn2+(aq) = 8H2O (l) If a 25.00 ml sample of hydro peroxide required 25.25 ml of .353 M KMNo4 solution to react with all the hydrogen perozide what was the molarity of the hydrogen peroxide solution?
June 7, 2011 by Vinny

chem 121
Iron and oxide react to form iron(lll) oxide: 4Fe(s) + 3O2(g)+ 2FeO2(s) Determine the limiting reactant in each of the following mixtures of reactants: 2.0 moles of Fe and 6.0 moles of O2
November 18, 2011 by claire

Chemistry
I could use some help please. Ammmonia, NH3, can be made by reacting Nitrogen with Hydrogen. N2+3H2=2NH3 How many moles of NH3 can be made if 7.5 moles of H2 react eith enough N2? Thank-you in advance for any help
March 18, 2013 by Sara

Chemistry Need Help
Given the chemical equation, Cl2 + F2 2ClF, how many moles of ClF are produced in the reaction, if 1.50 moles Cl2 are made to react with 1.75 moles F2 ? I got the answer 3.50 moles but it was wrong. Can anyone help me please.
February 27, 2015 by Matthew

chemistry
At a certain temperature, the equilibrium constant, K, for this reaction is 53.3. H2(g)+I2(g)->2HI(g) At this temperature, the reactants were placed in a container to react. If the partial pressures of H2 and I2 were each 0.300 bar initially, what is the partial pressure of...
March 12, 2015 by kelsey

chem
CaCo3 reacts with aq HCl to give CaCl2+CO2. What mass of CaCo3 is required to react completely with 50cm^3 of 0.60M HCl. Calculate volume of CO2 produced at STP.
September 29, 2015 by sharon

Math
If a community clinic invested $3,000 in excess cash today, what would be the value of its investment at the end of three years: a. at a 12 percent rate compounded semiannually? B. at a 12 percent rate compounded quarterly?
August 2, 2013 by April

Physics(work and energy)
A cannon ball is fired so that it hits the wall at the top of a 10m tower.If the energy needed to destroy the wall is 49000 F and the mass of the cannon ball is 10 k, the minimum initial velocity of the cannon ball required to break the tower wall is A 100 m/s b 200 m/s c 300 ...
May 20, 2012 by TOM

science
how to convert grams andmeters and stuff like that?
September 12, 2007 by bob

Chem Urgent!
What is the number of grams for 1 mol lead?
February 20, 2008 by Lisa

Chemistry
What is the mass in grams of 1.02X10^24 molecules of NaCl?
March 11, 2008 by J

Chemistry
How many grams of KCl can you dissolve in 50. g of water at 70 degrees C?
May 5, 2008 by Kate

Science
How many liters is 480.725134 grams of water?
September 7, 2008 by codie

Chemistry 2 Ap
Thats CaCo3 is equal to 1.838 grams. **sorry!
September 10, 2008 by jecce.

7th grade
what is 2.56 grams equals _____ miligrams
September 30, 2008 by NIck

Chemistry
how many grams does 0.500 moles of CuBr weigh?
December 8, 2008 by temi

chemistry
how many grams are in 5.66 mol of CaCO3? (the three is the subscript)
December 10, 2008 by STEPHANIE

chemistry
How do I change the molecular weight(58) of NaCl to grams?
January 5, 2009 by Iedane

Chemistry
How do you determine the number of atoms in 28.7 grams of gold (Au)
February 19, 2009 by Kristina

science
if I have 0.0899 g/L what would it be for grams per mL?
April 2, 2009 by Anonymous

chemistry
if I have 0.0899 g/L what would it be for grams per mL?
April 2, 2009 by kayla

chemistry
How many grams of Na2CO3 can be produced from 2.715 g NaHCO3?
October 17, 2009 by Rose

chemistry
How many grams of Na2CO3 can be produced from 2.715 g NaHCO3?
October 17, 2009 by Rose

chemisty
how many grams of KCL are there in 1200 ml of a 2% KCI solution
January 6, 2010 by shon

chimistry
how many grams of CaCl2 are produced from 3.24 mol Cl2
February 18, 2010 by josue

Chemistry
what mass of 12% solution can be produced from 60 grams of sugar?
April 18, 2010 by Deb

math
what combination of seven coins totals 27 grams?
April 21, 2010 by dalton

chemistry
how many molecules are in 35 grams of C2H60 (ethyl alcohol(?
March 2, 2011 by Anonymous

chemistry
how much will be produced from 45.0 grams of nitrogen gas?
May 20, 2010 by cassie

Chemistry
How many grams of Ni(OH)2 are produced from the reaction of 30.0 mL of 1.75 M NaOH solution?
May 24, 2010 by Lynn

chemistry
how many grams are in a 438mL of a 0.650M Na2SO4 solution
May 28, 2010 by Anonymous

chem
how can i figure out how to calculate molecules to grams ?
June 10, 2010 by ngugi

Chemistry
How many grams of sodium hydroxide are dissolved in 0.02 of a 3.0 m solution?
July 13, 2010 by Sam

Chemistry
How many grams of sodium hydroxide are dissolved in 0.02 of a 3.0 m solution?
July 13, 2010 by Sam

chemistry
How many grams of Al2(SO4)3 are there in 600 ml of (1.50)M solution
July 21, 2010 by Anonymous

chemistry
Pb w/D of 11.35g/ml. Pb(lead)3.45cc ?weight in grams
August 31, 2010 by kar

chemistry
How many grams of copper are contained in 253g of CuSO4
September 9, 2010 by Keren

sentences
write sentence using the word grams
September 9, 2010 by marlene

chemistry
if there is 2 grams of hydrogen and 1.75 was left over how many was used up
September 10, 2010 by rueben

Chemistry
Solve Calculate the grams of carbon of 77.7 g of propane?
September 24, 2010 by Corshaney

Chemistry
What is the number of grams of Hydrogen in 5.45 x 10^22 molecules NH3?
October 9, 2010 by Daniel

Chemistry
calculate the grams of sodium in 17.606 g of Na2CO3
October 22, 2010 by HELP

Chemistry
the mass in grams of 125 ion atoms
October 30, 2010 by Debbie

chemistry
How much iron can be recovered from 25.0 grams of FeO?
November 11, 2010 by Zach

Rodriguez
How many grams of CO2 will be produced when 29.0g of C3 H8 reacts with extra O2?
November 19, 2010 by Jessica

physcience
determine the mass in grams 1.3mol of silver,Ag
December 2, 2010 by diamond

Chemistry
If 30.0 g of H2 were used, how many grams of NH3 would be made?
December 11, 2010 by Stephanie

chemistry
Convert 50.4 grams of calcium bromide to molecules?
January 5, 2011 by anonymous

science
how many grams of product can be made from 1 mol of ethanol
January 16, 2011 by noone

chemistry
What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???
January 26, 2011 by Kim

chemistry
What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???
January 26, 2011 by Kim

math
250mg is equal to what percent of a gram or grams
February 1, 2011 by todd

chemistry
4. How would you convert 9.0 grams of water to moles?
April 18, 2011 by Anonymous

chemistry
how many grams of NH3 are in 250 ml of a 20% (w/v) ammonia solution
April 25, 2011 by alex

Chemistry
How many grams of bromine can be obtained by the decomposition of 92.0 of MgBr2?
April 27, 2011 by Mel

Chemistry
How many grams of H2SO4 are contained in 4.5L of .30 N sulfuric acid?
May 9, 2011 by Josh

sciencs
what is denser, 1 grams of gold or 1 kilograms of copper? why?
July 25, 2011 by chloe

Chemistry
How many moles of H atoms are there in 33.4282 grams of C2H4Cl2?
July 29, 2011 by Brooke

Chemistry
How many grams does 0.500 moles of CuBr weigh?
September 23, 2011 by Jeanette

chemistry
how many grams of CaO can form if 82.o g of CaCO3 decomposed
October 2, 2011 by avm

chemistry
How many grams of na cl are required to make 500ml of a 0.65 percent w/v
December 5, 2011 by devin

chemistry
if 2.2g of h2 and 1.25g of n2 are present, how many grams of nh3 will be produced
December 8, 2011 by adam

chemistry
Calculate the number of moles in 35.7 grams of Na3PO3
January 21, 2012 by Megan

Chemistry
How many grams of CO2 are formed when 32 g of O2 reacts with 23 g of C2H5OH?
January 29, 2012 by Bob

chemistry
how many grams are contained in 500.g of a 25% solution of H2SO4?
February 13, 2012 by jessica

Chemistry
If 84 g of CO2 were produced, how many grams of butanol were burned?
April 25, 2012 by Kali

Chemistry
How many chloride ions are present in 21.0 grams of CaCl2?
May 9, 2012 by Anonymous

Chemistry
What massof iron is contained in 86.6 grams if FeSO4?
June 12, 2012 by Andre

Science
What is the volume of 19 grams of flourine gas at stp?
July 12, 2012 by Molly

chemistry
At 25 degrees celsius, what is the mass in grams of 2.5L of mercury?
September 2, 2012 by sean

chem
what is the mass in grams of the following 6.78 mol of NaI
October 11, 2012 by Gloria

Chemistry
0.3 grams NaOH dissolved in 2.5litres. How many moles?
October 27, 2012 by Adrian

Chemistry
a sample of silver chromate has a mass of 78.6 grams?
January 28, 2013 by david

science
how much oxygen does a mass of 10 grams contain
February 13, 2013 by johnnie

Chemistry
How many grams of sulfuric acid is in 25.0 g of 8.00 % H2SO4 solution?
February 15, 2013 by m

Chemistry
How many grams of carbon are in 4.301023 molecules of (C3H5)2S?
March 3, 2013 by Hannah

chemistery
How many grams of (NH4)2S2O3 were in the fertilizer sample
March 20, 2013 by dug

chemistry
How many grams are in 4.00mol of sodium chloride (\rm NaCl)
March 24, 2013 by Dee

Chemistry
How many grams of co2 are in 3.92 times 10 to the 24th molecules
April 11, 2013 by Shaun

chem com
How many moles is 158.5 grams of CaCl2
April 17, 2013 by Ali

Chemistry
Calculate the number of atoms in 46.0 grams of Calcium 9(Ca)
October 10, 2013 by Jaret

chemistry
How many grams of carbon dioxide are produced from 48.8 g of C4H10?
October 17, 2013 by alexis

physics
what is the terminal velocity of 5 m particle with a density of 8.90 grams/cm^3
October 26, 2013 by Jane

Chemistry
what is the mass in grams of one molecule of water?
March 19, 2014 by Katie

CHEMISTRY
What is the mass in grams of one Mole of water?
March 19, 2014 by Katie

Physical Science
How many grams would occupy 12cm^3?
September 7, 2014 by Molly

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