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August 28, 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: 22,102

Physics
A metal sphere has a charge of -6 C. How many excess electrons are there on the sphere? 4x10^-13 10x10^13 4x10^13 10x10^-13 I'm stuck between A or D...
October 19, 2012 by I'm bad at physics

English
I've selected the poem The Casual Ward by Sir Luke Fildes which shows the poverty of the time period due to the industrial revolution. I would like to start off my paper with an introduction to the Industrial Revolution and list the positive and negative effects. Here are some...
June 30, 2008 by Adams

CHEMISTRY
A compound which contains hydrogen, oxygen, carbon only has molar mass of about 85 g/mol. When 0.43 g of the compound is burned in excess of oxyfen, 1.10 g of CO2 and 0.45 g of H2O are formed. Find the molecular formula and the empirical formula of the compound
July 18, 2016 by Clive Lodnyx

Quick chemistry check
Please check each of these mole statements. Correct me if I'm wrong! 1. 59g of hydrochloric acid (HCL)=____moles I got 1.6 moles 2. 4.6 moles of sodium hydroxide (NaOH)=___ grams I got 184 grams 3. 35.0 of sulfuric acid (H2SO4)=__ f.u sulfuric acid I got 2.15x10^25th power ...
February 25, 2015 by Anonymous

Chem
A particular coal contains 2.5% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The sulfur dioxide reacts with calcium oxide to form solid calcium sulfite. If the coal is burned in a power plant that uses 1800 tons of coal per day, ...
September 17, 2012 by Ezra

Chemistry
suppose that you have a n unlimited supply of copper II chloride to react with iron. how manyt moles of copper would be produced by reacting 34.0g of iron with the copperII chloride solution?
December 10, 2008 by Lily

Chemistry
Water will react most completely as an acid with A. SO3^-2 B. H2BO3- C. C6H5O- D. CH3COO- Why isn't the answer A, since H2O + SO3^-2 <-> HSO3- + OH- so H2O and HSO3- are the conjugate acids.
May 4, 2010 by sh

chemistry 105
Consider the following reaction: Li2S(aq)+Co(NO3)2(aq)-->2LiNO3(aq)+CoS(s) What volume of 0.150 M Li2S solution is required to completely react with 125 mL of 0.150 M Co(NO3)2?
October 10, 2011 by julie

Chemistry (balancing eq)
I need to write a formula where PbNa reacts with water. 2PbNa + 2 H20 = 2 NaOh + H2 +Pb It says in the question that lead doesn't react with water, but Na does. Did I write the formula correctly?
October 1, 2013 by Kristine

chemistry pls help me asap
2.08g of metal Y react with 0.96g of oxygen to form a metal oxide.The empirical formula of the metal oxide is Y2O3.What is the relative atomic mass of metal Y.
May 15, 2014 by mandy

Chemistry
What volume (in mL) of a 0.300 M HNO3 solution will completely react with 43.9 mL of a 0.146 M Na2CO3 solution according to this balanced chemical equation? Na2CO3(aq)+2 HNO3(aq)->2 NaNO3(aq)+CO2(g)+H20(l)
November 9, 2015 by Connor Smith

Chemistry
What volume (in mL) of a 0.300 M HNO3 solution will completely react with 43.9 mL of a 0.146 M Na2CO3 solution according to this balanced chemical equation? Na2CO3(aq)+2 HNO3(aq)->2 NaNO3(aq)+CO2(g)+H20(l)
November 9, 2015 by Connor Smith

Chemistry
What volume (in mL) of a 0.300 M HNO3 solution will completely react with 43.9 mL of a 0.146 M Na2CO3 solution according to this balanced chemical equation? Na2CO3(aq)+2 HNO3(aq)->2 NaNO3(aq)+CO2(g)+H20(l)
November 9, 2015 by Connor Smith

Science
Match these with the key terms (1) A form of energy that is always transferred from a warmer substance to a cooler one. (2) device that converts hear to a small amount of electric energy often used in temperature sensors. (3) A Push button barbecue lighter produces a small ...
December 2, 2013 by Aurore

Chemistry
OMG, I did the other fifteen questions of my homework but I'm stuck on these. #1: Which has the higher average kinetic energy, a tub full of 50'C water, or a small cup of 52'C water. Why? Which has more total kinetic energy, the tub or the cup? Why? #2: Lithium, sodium, and ...
September 24, 2008 by W I C K E D

math
Some people believe that calculators have eliminated the need to learn the skills required to perform mathematical operations by hand. State your position on this belief, and then support your position with real-life stories or examples I will be happy to critique your ...
March 4, 2007 by carmen

Science
Hormones and Homeostasis 1) The human endocrine system is made up of which of the following structures? :Vessels. :Receptors. :Glands.*** :Chambers. 2. Which of the following best describes the function of the endocrine system? :It secretes chemical messengers that travel ...
February 27, 2015 by TheLOUDEST_0430

finance
Under normal conditions (70% probability), Financing Plan A will produce $24,000 higher return than Plan B. Under tight money conditions (30% probability), Plan A will produce $40,000 less than Plan B. What is the expected value of return for Plan A over Plan B? $28,800 $4,...
July 24, 2008 by lashay- 3 quesions help me

History
1. What did John C. Calhoun want for the future for the U.S.? 2. What did Frederick Douglass want for the future for the U.S.? 3. How did John C. Calhoun change the U.S.? 4. How did Frederick Douglass change the U.S.? 5. How did John C. Calhoun react to some key events ...
March 12, 2015 by Hailee

chem
AgNO3 + NaCl produces AgCl + NaNo3 how much AgCl is produced when 3.10g of AgNO3 and .600g of NaCl react?
December 8, 2010 by alex

Chemistry
If you react 2.0 g AgNO3 and 2.5 g Na2SO4, what is the percent yield if the actual yield is 1.6 g Ag2SO4? 2AgNO3 + Na2SO4 → Ag2SO4 + 2NaNO3
January 24, 2012 by Ana

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

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
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

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 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
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

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

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

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

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