Tuesday
May 26, 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: 19,853

general chemistry
the radius of a chlorine atom is 99 pm and its mass is 5.89 X 10^-23 grams what is the density
February 6, 2013 by melissa

Chemistry
If you want to make 75 mL of a 0.015 M solution of B(OH)3 in water, how many grams of B(OH)3 would you need?
February 18, 2013 by Margaret

Science
How many grams of NH3 can be produced if 105g of NH4OH are completey decomposed?
March 12, 2013 by Morgan

Chemistry
How many grams of NH3 can be produced if 105g of NH4OH are completey decomposed?
March 12, 2013 by Morgan

Chemistry
How much energy is required to melt and heat 25 grams of ice at 0ºC to 25ºC?
March 13, 2013 by Sarcasticqueen

chemistry
how many grams of KClO3 will dissolve in 1 liter of water at 50 degree celisus ?
March 17, 2013 by Stephanie Diaz

chemistry
Calculate the solubility of Mn(OH)2 in grams per liter when buffered at each of the following. (a) pH 7.7 (b) pH 9.6 (c) pH 11.3
March 27, 2013 by hannah

chemsitry
you start with 150.0g of pentane and 500.0L of O2. how many grams of H2O will you make?
March 29, 2013 by sonya

10th grade chemistry
How many grams of kno3 can be dissolved in 100g of h2o at 50°c
April 11, 2013 by Kimdrick

chemistry
how many grams of carbon dioxide can be produced when 15.g of oxygen is reacted with 25.g of c2h2
May 6, 2013 by maria

Chemistry
636 grams of Na2CO3(s) are disolved in 3.0 liters of aqueous solution
June 14, 2013 by Jane

math
what is the net weight of 36 items that weigh 36 grams each in pounds or ounces
June 18, 2013 by patricia

chemistry
what is the concentration of a 250 ml solution that contains 44 grams of magnesium fluoride
August 21, 2013 by Emily

chemistry
how many grams of oxygen are required to burn completely 570g of octane?
September 1, 2013 by vaishnavi

Chemistry
What is the density of 3.40 Liters of Hydrochloric acid (HCl) that has a mass of 24.5 grams?
September 10, 2013 by Dawn

chemistry
What mass of nitric acid, in grams, can be made from 113g g of ammonia?
September 18, 2013 by keisha

chemistry -lab
what would be the percent yield if 2.2 grams of aspirin is formed?
October 16, 2013 by madellis

Chemistry
How many grams of NaCl are contained in 500ml of normal saline solution which is 0.85%(w/v).
November 2, 2013 by Adigun

chemistry
3H2+N2=2NH3 if 2.70 g of H2 reacts with jugful of N ,how many grams of NH3 is formed?
February 2, 2014 by Anonymous

chemistry
how many grams of sodium oxalate, Na2C2O4, could be obtained from 213 g of C6H6?
February 10, 2014 by hkgdfjtrth

analytical chemistry
How much NaOH (in grams) would there be in 0.25 litre of a 0.3M solution?
February 15, 2014 by MJ

Chemistry
How do I calculate moles from the given litres and mass of the substance (in grams)?
February 23, 2014 by Anonymous

Chemistry
How do I calculate moles from the given litres and mass of the substance (in grams)?
February 23, 2014 by Anonymous

Chemistry
A solution has 189 grams of HNO3 dissolved in 1000L of water. What is pH?
February 26, 2014 by Emma

chemistry
Calculate the amount of CO2 formed when 50 grams of CaCO3 decomposes?
May 2, 2014 by jill

science
1o grams of caster sugar dissolved in 25 degrees long to does it take.
July 20, 2014 by lisa

Chem
After 450 years how many grams of C-14 will remain from a 100.0 g sample
September 21, 2014 by Anonymous

chemistry
How many grams of HCl are formed from reaction of 3.58g of H2 with 8.90g of Cl2?
October 16, 2014 by R

chemistry
Consider the reaction, 4 NH3 + 5 O2 => 4 NO + 6 H2O How many grams of NO will be made from 10.7 moles of O2?
November 16, 2014 by michelle

Chemistry
What is the mass, in grams, of a pure iron cube that has a volume of 4.30 cm3?
February 2, 2015 by Samantha

chemistry
What would be the mass in grams of one million (1.0*10^6) chromium atoms?
March 18, 2015 by sakura

Chem
What mass of KCl in grams is formed when 2.00lbs of KClO3 is decomposed?
April 12, 2015 by Helen

chemistry
calculate the solubility in grams of KCL3(s) per 100 ml of water
May 10, 2015 by emily

Chemistry
Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide. Sb2S3(s) + 3Fe(s) ==> 2Sb(s) + 3FeS(s) When 15.0g Sb2S3 reacts with an excess of Fe, 9.84g Sb is produced. What is the percent yield of this reaction?
April 5, 2010 by Ken

chem
In an excess of NH3(aq), Cu2+ ion forms a deep blue complex ion, Cu(NH3)42+, which has a formation constant Kf = 5.6 1011. Calculate the Cu2+ concentration in a solution prepared by adding 4.8 10-3 mol of CuSO4 to 0.500 L of 0.32 M NH3.
March 28, 2013 by hannah

lab
Number of moles of oxygen gas produced from the complete catalyzed decomposition of 6.80ml sample of a 3.5% solution. Density of the 3.5% solution of H2O2 is 1.01g/ml Let's find out what you know about this and work from there. Show your calculations to the point that you are ...
September 25, 2006 by Melba

Chem
If you start with 3.500 g of ZnSO4 (Zinc Sulfate) & 7 H2O and heat it for 10+ minutes to remove the water of hydration, what will be the mass of water removed? Hint: Since you know the number of grams of hydrated salt present you then know the number of moles. Once you know ...
February 18, 2007 by Angie

Chemistry
A 51.46 mL sample of an ammonia solution is analyzed by titration with HCl. The reaction is given below. NH3(aq) + H+(aq) NH4+(aq) It took 38.57 mL of 0.0984 M HCl to titrate (react completely with) the ammonia. What is the concentration of the original ammonia solution?
October 28, 2010 by Anonymous

Chemistry
1. What does 'the time taken to reach completion decreases if 20cm^3 of hcl containing 4mol/dm^3' means? How to work out to find the concentration? 2(a)What does concentrated hcl means? (b)What does dilute hcl means? Which will react faster or slower / a or b? Thanks sooooo ...
October 30, 2011 by StuartKess

Chemistry!
a)consider the following reaction: Mg(s)+ 2HCl(aq) --> MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP? b) What is the freezing point of an aqueous solution that boils at 102.1 C?
April 26, 2010 by Justin

Chemistry
A commercial for a well known cleaning powder says that it "shakes out white, then turns blue" what type of reaction os occuring? what compound can one use to produce this effect?
November 3, 2010 by Ash

Chemisry
What is the minimum amount of 5.2M H2SO4 necessary to produce 22.8g of H2 (g) according to the following reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g) (Please be precise and clear)
February 11, 2014 by Tyler Jones

Statistics
a procedure in REGRESSION NALYSIS WHERE PREDICTOR OR INDEPENDENT VARIABLES ARE CODED AS 1 OR 0 (REPRESENTING CATEGORIES) AND CAN BE USED TO PRODUCE ANOVA TABLES UNDER THE GENERAL LINEAR MODEL IS KNOWN AS?
April 5, 2014 by Jo

Statistics
A procedure in regression analysis where Predictor or Independent Variables are coded as 1 or 0 (representing categories) and can be used to produce ANOVA Tables under the General Linear Model is known as…?
April 6, 2014 by C

chemistry
This type of functional group is often sweet smelling and may be used as a fragrance. When it reacts with water it will produce a carboxylic acid and an alcohol. I chose ester but it is wrong
May 10, 2014 by bekah

chem
consider the chemical reaction, 2Al + 3Cl2 -> 2AlCl3. here, 212.7 g of chlorine can produce a maximum of 266.66 g of AlCl3 (molar mass of Al = 26.98 g and Cl = 35.45 g) true or false
October 4, 2014 by bekah

science
To 90.0mL of a solution that contains 0.100M Cr(NO3)2 and 0.490M HNO3 is added 30.0mL of 0.170M K2Cr2O7. The dichromate and chromium(II) ions react to give chromium(III) ions. Write a balanced net ionic equation for the reaction.
December 1, 2012 by it

chemistry
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. After actually running the reaction you determined the percent yield was only 78.5%. How many LITERS of CO2 did you make? (Must put CO2 in answer la
May 30, 2014 by Amy

CHEMISTRY
question 1.Explain why fructose and alpha-hydroxyketose reacts with benediict’s solution. what structural arrangement is necessary for the reaction to occur? question 2. When aldose react with Barfoed reagent what type of organic compound forms. What type of chemical reaction ...
April 25, 2015 by SHALOM

College Economics
Hey can someone tell me how to graph this in excel please. Thanks. Produce a chart in Excel showing TC and TR with Q on the horizontal axis. Have Q go from 0 to 15,000 units. Produce a second chart showing MC and MR with Q again on the horizontal axis. Here is the problem for ...
September 16, 2010 by Alexis

8th-g Science: Need help to check answer!!!
Since I will have a science test next week based on these questions but my teacher won't check all answer with the class. I don't want to make a mistake and study to an incorrect answers. Do you mind to check the answers for me so that I am able to see if I got it correct or ...
March 6, 2014 by Cassidy

science( chem)
For the lab of Determining the % of iron in an iron ore sample The instructions were to: 1) Weigh out btw 0.3-0.4g of iron ore 2) disolve in concent HCl (10ml) and 3ml of 0.25M SnCl2 3) add enough tin so the yellow color disapeared 4) heat until sample decomposes and disolves ...
July 17, 2007 by christina

chemistry
explain how to set up: what mass of iron(III) carbonate would be produced if 545 ml of 0.150 M iron(III) choloride were added to a solution containing excess sodium carbonate. Given reaction of 2FECL3(aq) + 3Na2CO3(aq)---- Fe2(CO3)3 (s) + 6 NaCl (aq) thank you
July 2, 2011 by Jamie

chemistry step by step thank a lot
Al2(s04)3 solution of a molal concentration is present in 1 litre solution of 2.684g/cc. How many moles of bas04 would be precipitated on adding bacl2 in excess? the answer 6M Who helps me step by step for me clearly I am thankful to all tutors
July 11, 2014 by ken

chemistry
The antacid in question (with an active ingredient of Ca(HCO3)2), upon treatment with excess hydrochloric acid, a 0.413 g sample gives 92.85 mL of CO2 at 25.00oC and 1.000 atm. What percentage of the antacid is active ingredient? Assume a perfect system (i.e. the yield is 100%)
November 1, 2014 by kimberly

chemistry
How many mL of 0.3 M HCl(aq) are needed to neutralize a 60 mL solution of 0.15 M Ba(OH)2? THe answer please
May 5, 2008 by mo

social studies
give to reasons why african slaves were needed
September 22, 2008 by djuan

History
Why was an entirely new consitution needed according to Publius?
November 15, 2008 by Catie

algebra- help needed fast
solve the system by addition method 7x^2+y^2=49 7x^2-y^2=49
February 26, 2009 by Anonymous-2

science
how much energy is needed to heat 3kg of aluminium from 21 oC to 50 oC?
September 4, 2009 by Curtis

science
how much force is needed to move a 10000kg airplane at 12.0 m/s
October 28, 2009 by ashley

social studies
why did the people of the south feel that they needed slaves
November 19, 2009 by kyara

Pharmacology
If a drug is changed from oral to IV what dose change is needed?
December 9, 2009 by India

Chemistry
How much energy is needed to melt a 30.5 g ice cube?
February 23, 2010 by Christopher

chemisty
How much energy is needed to melt a 30.5 g ice cube?
February 23, 2010 by Christopher

science mathmatics
Can you calculate the work needed to lift a 20.0-N book 2.0m
February 24, 2010 by Imran

science
what is the salary, range, and amount of schooling needed to be an EMT?
April 6, 2010 by jerson

chemistry
How much heat is needed to raise 300g of Ethanol from 0 C to 20 C?
June 3, 2010 by Person

biology
a substance needed for the proper functioning of the thyroid gland is
June 16, 2010 by Anonymous

math
how many square yards of carpeting are needed for a room that measures 12.5 ft by 18.25 ft
September 6, 2010 by Anonymous

physics
How much force is needed to accelerate a 78kg skier 2m/s/s/
September 14, 2010 by cheyenne

chemistry
How many ML of H2SO4 (20m) are needed to make 500ml of 5M solution?
September 21, 2010 by ad

chemistry
urgent help needed!!! what is .0966 rounded to 2 significant digits? and why?
September 22, 2010 by Ana

chemistry
how many pounds of uranium are needed to make a nuclear bomb
September 29, 2010 by lee

MATH
HOW MANY 1FT TILES ARE NEEDED TO COVER A 15FT BY 25 FT PATIO
January 27, 2011 by CLEO

Physics
How much work is needed to lift a 3 kg mass a distance of 0.75 m?
February 27, 2011 by Lesley

chemistry
what is the mass of CuS04 needed to prepare a 125ml solution of 3.5M?
March 7, 2011 by kjkajkjujo

Chemistry
how much sulfur dioxide is needed to decrease the pH of 1L of water from 9.8 to 8.0?
March 8, 2011 by lisa

Chemistry
How many joules of heat are needed to increase the temperature of 18.4 g of silver from 17.0 to 41.0 °C?
May 26, 2011 by Roxanne

chem
how many mL of a .094 M NaOh are needed to neutralize 21.4 mL of .160 M HCL
June 13, 2011 by sha

alga br e
How many ft of fencing is needed to enclose a square with 33ft sides
July 3, 2011 by Megan

Chemistry
Calculate the heat in calories needed to melt 14.0g of ice at 0C .
September 8, 2011 by Sam

Chemistry Help!!
how many joules of heat are needed to vaporize 50.0 g water at 100.0 C?
October 12, 2011 by Maci

chemistry1
How many mL of 0.200 M NaOH are needed to titrate 20.0 mL of 0.100 M H2SO4?
October 26, 2011 by emma

chemistry
how many kg of chalcopyrite is needed to obtain 500g of pure copper
November 16, 2011 by P

chemistry
what amount of ethanol is needed for combustion reaction for a 20 oz bottle?
December 12, 2011 by Anonymous

science
Ho many millilitres of sucrose is needed to make 25 L of liquering soluton at 20% v/v
January 2, 2012 by tracey

Chemistry
How many milliliters of .100 M HNO3 are needed to neutralize 58.5 mL of .0100 Al(0H)3?
February 17, 2012 by Emily

physics
how much force is needed to accelerate a 1800 kg car 3m/s 2
February 22, 2012 by Orianna

social studies
what did the delegates to the annapoliscovention decide the country needed
March 3, 2012 by hether

chemistry
how much energy is needed to melt 25.4 g of I2 if enthalpy fusion of I2 is 61.7 J/g
March 8, 2012 by Anonymous

Math
How many 20" tiles is needed for a 1200 square feet room
March 30, 2012 by Anthony

chemistry
If 27.3 g of NaNO3 are needed, what volume of a 5.78 % w/v solution will provide this mass?
April 26, 2012 by lisa

chemistry
how much heat is needed to convert 30 g of water at 10 C to 110 C
May 3, 2012 by jason

Health
Help needed Who might be responsible for abuse in clients with dementia?
September 24, 2012 by jessica

math
How many inches of matting are needed to frame an 8 in by 11 in print 38in?
November 7, 2012 by Lance

chemistry
calculate the amount (g) needed to make 25 ml of 0.1 m co(no3)2 6h2o
November 28, 2012 by Anonymous

maths-urgently needed[Differential equations]
solve- dy/dx = 2xy + (y^2/x^2)
February 7, 2013 by Anonymous

maths-urgently needed[Differential equations]
solve- dy/dx = 2xy + (y^2/x^2)
February 7, 2013 by Anonymous

maths-urgently needed
Integrate ( x^2cosx)/(1+sinx)^2 dx with limits from 0 to pi/4
February 17, 2013 by Anonymous

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