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December 5, 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: 22,690

Chemistry
A reaction was run where lead nitrate and potassium iodide were mixed. The resulting precipitate only gave a 78.1% yield. If the actual yield was 25.0grams, how many grams of lead nitrate were used? This is what I have so far: Potassium Iodide= KI = 166.0028g/mol lead nitrate...
June 10, 2009 by Aparicio

chemistry
I post this question two time before but the degree sign is wrong so I post this one with everything corrected for the final time. Thank upon who answer this question on the other 2 same question before. Calculate the final temperature that results from mixing 245 grams of ...
November 14, 2016 by cao

chemistry
Based on the balanced equation 2Ba + O2 → 2BaO calculate the number of BaO formula units formed when 142 Ba atoms and 73 O2 molecules react?
February 12, 2010 by eng

chemistry
What volume of 0.123 M K3PO4 is required to react with 60 mL of 0.862 M MgCl2 according to the equation 2K3PO4+3MgCl2--> Mg3(PO4)2+6KCl Answer in units of mL.
March 10, 2010 by Steven

chemistry
What volume of 0.174M Na3PO4 solution is necessary to completely react with 89.1mL of 0.106M CuCl2? 2Na3PO4(aq) + 3CuCl2(aq) produces Cu3(PO4)2(s)+ 6NaCl(aq)
October 9, 2010 by Anonymous

chemistry
What volume (in Liters) of oxygen must react to form 17.0L of carbon dioxide according to the following balanced equation: 2CO(g) + O2(g) --> 2CO2(g) is this correct C G02 2
October 16, 2010 by amber

College Chem
Based on the balanced equation 4Na + O2 → 2Na2O calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2 molecules react? Thanks.
April 15, 2012 by Lance

College Chem
Based on the balanced equation 4Na + O2 → 2Na2O calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2 molecules react? Thanks.
April 15, 2012 by Lance

Chemistry
2CO(g) + O2(g) 2CO2(g) Go = -511.6 kJ and So = -173.1 J/K at 314 K and 1 atm. The maximum amount of work that could be done by this reaction when 2.43 moles of CO(g) react at standard conditions at this temperature is__________ kJ. how?!
April 26, 2012 by Bryan

AP Chemistry
What volume of 0.596M K3PO4 is required to react with 29 mL of 0.864 M MgCl2 according to the equation 2K3PO4 + 3MgCl2 -> Mg3(PO4)2 + 6KCl Answer in units of mL
October 21, 2012 by Tara

chemistery
What is the molar concentration of a solution of sulfuric acid, H2SO4, if 4.64 mL react completely with 0.644 g of NaOH which was dissolved in 200 mL of water? Hint given in feedback
October 7, 2014 by johny

chemistry
Can aluminum (Al) react with K2SO4 by single replacement to yield products? Using the activity series chart, I know that K is more reactive than Al so does that mean that a reaction will occur or not?
April 27, 2015 by Ally

Chemestry
Calculate the volume of a 0.225 M solution of potassium hydroxide,KOH,required to react with 0.215g of acctic acid,CH,COOH=KCH,COO+H2O.
March 4, 2016 by C'm mulerk

chemistry
Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen gas must react to give 41.0 mL of NH3? 3H2(g)+N2(g)→2NH3(g)
July 20, 2016 by Maria

Science
I am figuring out how much KCL will dissolve in 50 grams of water at sixty degrees, based on a graph. According to the graph, 45 grams of KCL can dissolve at 60 degrees. So I subtracted 45 from 50, and got five. The thing is my book said the answer should be between somewhere ...
March 12, 2009 by Aurora

Safety
Do other countries have individuals who played a significant role in starting safety prgrams in their countries? NEED REFERENCES Thanks! sometimes but not very much umm I need a better answer than that Thank you for using the Jiskha Homework Help Forum again. Didn't you find ...
April 9, 2007 by Ashley

algebra
Suppose a sample of Cesium-137 with initial mass of 200 grams decays to a mass of 160 grams voer the course of 10 years. Find the half-life of Cesium-137 (Round to the nearest year) How much Cesium-137 is left in the sample after 60 years? Round to the nearest tenth of a gram.
July 30, 2011 by Melanie

Chemistry
Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is: C2H2(g) + 2H2(g) === C2H6(g) Given the following, what is the Kp for the reaction? C2H2(g): 209.2 ΔG˚f (kJ/mol) H2(g): 0 ΔG˚f (kJ/mol) C2H6(g): -32.89...
March 31, 2013 by Ezra

English
1. We need 2 cups of flour. 2. We need 40 grams of butter. 3. We need 100 grams of sugar. (Are they all grammatical?) 4. We meet 9:00 am on April 3. 5. We meet at 9:00 a.m., April 3. 6. We meet on April 3 at 9:00 a.m. 7. We meet April 3, 9:00 a.m. (Which one is grammatical? ...
April 25, 2012 by rfvv

Chemistry
Calculate the theoretical yield of MnO3 when 2.0 moles of Mn react with 2.0 moles O2. Write a balanced equation for the reation.
March 17, 2008 by AR

Managerial Economics
How would you react to a sales manager’s announcement that he or she has in place a marketing program to maximize sales?
August 29, 2010 by Anonymous

Chemistry
(1) What is the percentage oxygen in 4grams of caco3. (2) What mass of Oxygen is require to react completely with 16grams of hydrogen.
March 21, 2011 by Fabian

Chemistry
Consider the following generic chemical equation 2A + 4B ¨ 3C What is the limiting reactant when 3 moles of A and 4 moles of B are allowed to react?
October 10, 2011 by Anonymous

chemistry/ stioichiometry
Cu2S + O2- 2Cu +SO2 when 10.2 mol Cu2S react with oxygen, how many moles of Cu are formed? path?
April 9, 2012 by rachell

chemistry/ stioichiometry
Cu2S + O2- 2Cu +SO2 when 10.2 mol Cu2S react with oxygen, how many moles of Cu are formed? path?
April 9, 2012 by rachell

port charlotte high
2Nacl +2HCL = 2NaCl + H2 what mass of sodium is required to react with 8.45g of HCl
February 25, 2013 by john

chemistry
In a measurment 0.1M Kmno4 is used.determine the volume of solution required to react with 0.158M Na2s2o3 required?
March 14, 2013 by Abhishek Bhargav

Chemistry
X^2+ + 2e- -> X(s) E=1.73V Y^2+ + 2e- -> Y(s) E=0.40v Which pair of species would react under standard conditions? X^2+ and Y^2+ X and Y^2+ X and Y X^2+ and Y Would it be X and Y because the E is positive?
March 31, 2013 by Anon

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

Science
If 50% if reactant is converted to product in first order in 25 minutes.how much of it would react in 100 minutes?
August 8, 2016 by Kinetics

chemistry
A sample of one liquid has a mass of 60 grams and a volume of 50 centimeters cubed; a sample of a second liquid has a mass of 30 grams and a volume of 40 centimeters cubed. They are put in a container and mixed. Can you determine what the mass and the volume of the mixture is?
October 12, 2012 by Ann

chemistry
What volume (mL) of sulfur dioxide can be produced by the complete reaction of 3.82 g of calcium sulfite with excess HCl, when the final SO2 pressure is 827 torr at 44 degrees celsius?
August 6, 2009 by Bryan

chemistry
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex
November 3, 2009 by Anonymous

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

Chemistry
What volume (in ml) of carbon dioxide will form if 19.3 ml of O2 are reacted acccording to the following balanced equation: 2CO(g) + O2(g) --> 2CO2(g) Assume an excess of CO and that all are at the same temperature and pressure.
October 17, 2011 by Sven

chemistry
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex.
November 16, 2011 by Anonymous

chem
In an experiment 4.0 g of ferrous ammonium sulphate, FeSO4.(NH4)2SO4.6H2O, is used. Since the oxalate in in excess, calculate the theoretical yield of the iron complex?
November 16, 2011 by Anonymous

cheistry
Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid and potassium hydroxide are combined. Assume excess base.
November 17, 2011 by savannah

physical science
Plan,design and conduct investigation to find out whether the amount of gas produced will depend on the increase on the concentration of HCl when it reacts with an excess Zn
April 6, 2013 by kamogelo

Chemistry
Consider the reaction 2D2(g)+O2(g)→2D2O(l) What is the mass of heavy water, D2O(l), produced when 7.65g of O2(g) reacts with excess D2(g)? Express your answer with the appropriate units.
April 14, 2015 by Brittany

chemistry
2.00g of carbonate reacts with excess hydrobromic acid. Use this balanced equation to fond the theoretical yield. Na2Co3 + 2HBr = CO2 + H2O + 2NaBr
August 16, 2016 by jane

chemistry
CH4+2O2-->CO2+2H2O If 22.75g of carbon dioxide is obtained when 9g of methane is burned in excess oxygen, what is the percent yield? Show work too please
November 26, 2016 by help pls

HCT
The data shown below shows the amount in dollars spent on groceries in one day by 30 people. 204 210 227 218 254 256 238 242 253 227 251 243 233 251 241 237 247 211 222 231 218 212 217 227 209 260 230 228 242 200 1 mark a. Is it a continuous or a discrete data? b. Fill in the ...
March 7, 2012 by abeer

Chemistry
I'm really confused on this question so if someone could show the steps and how to get the answer, that would be great. I understand that you would use delta T=Kbm, but don't know how to use the equation to find the answer. Thanks!! Calculate the boiling point of a solution ...
June 4, 2014 by Serena

Chemistry
Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. It contains only C, H, and O. Combustion of 19.81 mg terephthalic acid produces 41.98 mg CO2 and 6.45 mg H2O. If 0.262 mol of terephthalic acid has a mass of 43.5 g, determine ...
April 25, 2010 by sean P.

Chemistry balancing equations
Translate each of the following reactions into complete balanced chemical equations using international symbols & include states of matter at SATP. Assume pure states of matter unless otherwise indicated. I really need help with this stuff please. 1. The reaction of magnesium ...
December 2, 2011 by Fizzylicous

chemsitry
You have been provided 100mL of a 1000ug/ml barium standard what volume of this standard must be diluted into 50mL of ID water to produce a 30 ug/ml standard ? if you given a full 100mL of the same standard provied calculate the amount of standard and final volume required to ...
January 31, 2010 by Samah

Chemistry
is there an equation to find mass percent....if know concentration and and final and initial volume of a titration lab? there isnt one then how do you find mass percent? M x L = mols of titrant. From the equation, convert to mols of unknown. Mols of unknown x molar mass = ...
May 7, 2007 by Natalie

AP Chemistry
An unknown compound contains only the three elements C,H, and O. A pure sample of the compound is analyzed and found to be 65.60 percent C and 9.44 percent H by mass. a.)Determine the empirical formula of the compound. b.)A solution of 1.570 grams of the compound in 16.08 ...
January 5, 2009 by some kid

chemistry
The thermal decomposition of calcium carbonate produces 2 by-products, c02 and calcium oxide. calculate the volume of the co2 produced at STP from the decomposition of 231 grams of caco3. i know the equation i need to use is V=nrt/p but am i supposed to convert the grams to ...
February 18, 2010 by Katherine

chemistry
In the lab, 20.0 g of sodium hydroxide is added to a beaker giving it a total mass of 128.4 g. Sulfuric acid is added until all of the sodium hydroxide reacts. After heating, the total mass of the beaker and the dry compound is 142.3 g. Caculate the percent yeild. 2NaOH + ...
June 13, 2007 by jill

Chemistry
You are preparing 500 mL of a 0.300 M acetate buffer at pH 4.60 using only sodium acetate, 3.00 M HCl, 3.00 M NaOH, and water. Calculate the quantities needed for each of the following steps in the buffer preparation. 1. Add sodium acetate to ~400 mL of water in a large beaker...
February 28, 2012 by Unknown

Chemistry: Dr. Bob, can you check my work?
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq) 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 712 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total volume...
November 15, 2012 by Zachary

science
A force of 20 N gives an object an acceleration of 5m/s^2. (a) What force would be needed to give the same object an acceleration of 1m/s^2? (b) What force be needed to give it an acceleration of 10m/s^2?
February 22, 2013 by jake

Chem
Ores are analyzed by dissolving some of the ore and then performing an analysis of a metal (expressed in grams); usually the concentration of the metal is expressed as % of the amount of the ore (in grams) dissolved. An ore containing V was dissolved and then titrated with ...
April 7, 2013 by Mariam

algebra
The mass of Neptune is about 1.03x10^23 metric tons. The mass of the sun is about 1.998x10^27 metris tons. About how many times the mass of Neptune is the mass of the sun? Round to the nearest thousandth, if needed use scientific notation. Use the multiplication symbol in the ...
September 1, 2010 by Jackie

algebra
The mass of Neptune is about 1.03x10^23 metric tons. The mass of the sun is about 1.998x10^27 metris tons. About how many times the mass of Neptune is the mass of the sun? Round to the nearest thousandth, if needed use scientific notation. Use the multiplication symbol in the ...
September 2, 2010 by jackie

Statistics
The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. Show your work. a. Highest 10 percent; b. Highest 50 percent; c. highest 5 percent; d...
September 8, 2010 by Shon

physics10
A sled of mass 51 kg is pulled along snow-covered, flat ground. The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10. (a) What does the sled weigh? (b) What force will be needed to start the sled moving? (c) What force is needed to keep the ...
December 11, 2011 by Hannah

chemistry COMPOUNDS?
A compound contains 60.0 grams carbon and 12.0 grams hydrogen 1) what is the percent of carbon in compound? 2) what is the percent of hydrogen in the compound?
January 19, 2009 by Gianna

Chemistry
Problem 1: If I have 100 grams of CO2, how many MOLES of CO2 do I have? Problem 2: How many molecules of CO2 are there in this 100 grams?
September 7, 2011 by Meeka

Chemisry
Write a balanced equation using the correct formulas and include conditions (s,l,g or aq) for each of the following reactions. 1)Carbon monoxide gas reacts oxygen gas to produce carbon dioxide gas. Express your answer as a chemical equation. Identify all of the phases in your ...
November 14, 2010 by TMV

Physics
A spring with k = 54 N/cm is initially stretched 1 cm from its equilibrium length. (a) How much more energy is needed to further stretch the spring to 2 cm beyond its equilibrium length? (b) From this new position, how much energy is needed to compress the spring to 2 cm ...
June 2, 2012 by Kelly

chemistry
A sample of a hydrate of CuSO4 with a mass of 250 grams was heated until all the water was removed. The sample was then weighed and found to have a mass of 160 grams. What is the formula for the hydrate? CuSO4 * 10 H2O CuSO4 * 7 H2O CuSO4 * 5 H2O CuSO4 * 2 H2O CuSO4 * H2O
December 27, 2010 by cam

Biology
In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g). A student performed a cross between a plant that produced green melons and a plant that produced yellow melons. When the student observed the next ...
April 2, 2016 by Stephanie

physical science
a force of 20 N gives an object an acceleration of 5 m/s2. (a)What force would be needed to give the same object an acceleration of 1 m/s2. (b) what force would be needed to give an accelerattion of 10 m/s2 ?
September 14, 2012 by tracey

Chemistry PLEASE HELP!!
Procedure: 1. Calculate the mass of iron(II) ammonium sulfate hexahydrate, Fe(NH©þ)©ü(SO©þ)©ü*6H©üO (MW = 392.14) required to make 100 mL of solution that is 0.2M in Fe©÷⁺ ions. You will be asked to show your calculation in the Assignment. 2. Take a 100 mL ...
April 14, 2012 by Betsey

Biology
When you consume more food than you require the mitochondria in the liver are involved in forming triglycerides from the excess. Why is storage of triglycerides important?
February 18, 2009 by Lindsay

Chemistry
Calculate the mass of each product formed when 43.82g of diborane (B2H6) reacts with excess water: B2H6(g) + H2O(l)--> H3BO3(s) + H2(g)
September 27, 2009 by TeeJay

Chemistry
Calculate the mass of each product formed when 43.82g of diborane (B2H6) reacts with excess water: B2H6(g) + H2O(l)--> H3BO3(s) + H2(g)
September 29, 2009 by TeeJay

Chemistry
An excess of zinc is added to 125 mL of 0.100 M HCl solution, What mass of zinc chloride is formed? Zn + 2HCl ----> ZnCl2 + H2
April 29, 2010 by Ana

Chemistry
Calculate the heat released when 1.61 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
October 2, 2010 by Trinh

chemistry
Calculate the heat released when 3.10 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride. 1 kJ
October 6, 2010 by mylles

chemistry
Calculate the heat released when 3.10 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride
October 6, 2010 by Tits magee

chemistry
if 25.o g of Al are reacted with an excess of amount of Cl, what is the maximum amount of aluminum chloride that can be produced using the following reaction. 2 Al + 3 Cl2 - 2 AlCl3
February 15, 2011 by yoda

chemistry
calculate the mass of silver chloride and dihydrogen monosulfide formed when 85.6g of silver sulfide reacts with excess hydrochloric acid.
March 17, 2011 by araceli

Chemistry
2Na + 2H2O = 2NaOH + H2 Calculat the moles and volume of hydrogen produced when 0.2 moles of sodium reacts with excess water.
May 29, 2011 by Noah

Chemistry
When 0.340 mol of butane, C4H10, are burned with excess oxygen giving CO2 and H2O, how many moles of oxygen are consumed?
September 9, 2011 by Aha

Science
How many milliliters of water at 20.0 °C are formed in the combustion of 25.0 g of a methanol–propanol mixture that is 62.5% methanol by mass? Assume there is an excess of oxygen available.
March 22, 2012 by Bob

chemistryy
The reaction between 34.0 g of NH3 and excess oxygen gas produces 45.9 g of NO gas and some water. Determine the percent yield.
May 18, 2012 by bri

chemistryy
The reaction between 34.0 g of NH3 and excess oxygen gas produces 45.9 g of NO gas and some water. Determine the percent yield.
May 18, 2012 by bri

chemistry
What mass of lead (II)chloride would precipitate if a solution containing 8,28 g of lead (II) ions(Pb2+) reacts with excess HCl?
January 24, 2013 by maria

Physical science
To investigate whether the amount of heat produced will depend on an increase on the concentration of HCL when HCL reacts with an excess Zn
April 20, 2013 by Miss p

science
2.750 g of copper(II) oxide, CuO2, was reduced by heating at high pressure with excess hydrogen to yield 2.196 g of copper Cu.
September 15, 2014 by anthony young

chemistry
3NO2(g) + H2O(l) → 2HNO3(l) + NO(g) How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and excess water?
November 5, 2015 by beverly

chemistry
Topic: Iodometry 1. The importance of precipitating the Cu2+ ions using NH3 and redissolving it with acetic acid 2. What are other means of detecting endpoint in iodometry aside from adding starch indicator 1. A pH that is too low leads to excessive oxidation of iodide ion to ...
July 29, 2007 by smiley

Math
Which of the following would require finding the area? A. Determining the number of sugar cubes in a box B. Determining the amount of paper needed to cover a bulletin board C. Determining the length of trim needed to go around the edge of a bulletin board D. Determining the ...
January 30, 2012 by Andrew

chemistry
how do i produce sulfuric acid at home
April 15, 2008 by Anonymous

Science- Chemistry
What does NaHco3 + HCl produce?
October 28, 2008 by Laura

Science
Ferns produce male gametes in what?
November 11, 2008 by Rachel

Science
What are some species that produce asexually? Thanks -MC
December 12, 2008 by mysterychicken

math
What would the cube root of 6a^2 produce?
January 4, 2009 by Anonymous

physics
how do green plants produce food
December 13, 2009 by fatima

science
what differences produce a variety of ecosystems?
April 25, 2010 by gerard

astronomy
What does supernova produce, helium or carbon?
April 29, 2010 by Anonymous

astronomy
What does supernova produce, helium or carbon?
April 29, 2010 by Anonymous

physics
What length pendulum will produce a period of 1.0s?
November 14, 2010 by hannah

Lotto 5/90 maths
37 69 72 14 8 - 86 40 22 6 24 what number will this game produce
April 12, 2011 by Sunny

Math
why might Pa^t and Pe^rt not produce the same answer? Thank You
February 12, 2012 by WaShu

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