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April 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: 19,704

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

maths-urgently needed
integrate 1/x dx w.r.t x answer should be log(x) or ln(x) and why
February 19, 2013 by Anonymous

science
5 mL O.1 M HCL...How much 0.1 M NaOH is needed to neutralize the acid? Thank you
May 13, 2013 by mae

science
where does the energy needed to heat up cold water come from?
May 19, 2013 by sam

chemistry
What volume of 0.140 M HCl is needed to neutralize 2.53g of Mg(OH)_2
September 29, 2013 by Em

ap chem
What volume of 0.140 M HCl is needed to neutralize 2.53g of Mg(OH)
September 29, 2013 by ally

Science
What condition is needed for an experiment to have useful data?
October 17, 2013 by Mark

Science
What condition is needed for an experiment to have useful data
October 17, 2013 by Mark

Science
What condition is needed for an experiment to have useful data?
October 17, 2013 by Mark

Science
What condition is needed for an experiment to have useful data?
October 17, 2013 by Mark

science
How many cups of water are needed for a plant to begin germinating?
November 17, 2013 by Anne

chemistry
how many moles of nitrogen would be needed to make 10.0 ammonia?
December 12, 2013 by Ashley

chemistry
equation for joules needed to increase water temp
January 28, 2014 by David

chemistry
How much naoh and hno3 is needed to make nano3?
May 26, 2014 by John

math
18.75 lbs = 5000 sq ft how much needed to cover 27000 sq ft
September 24, 2014 by taylor

Chemistry
How many mL of 0.5 M HCl(aq) are needed to neutralize a 288 mL solution of 0.25 M NaOH?
January 11, 2015 by Anonymous

maths
One tile is 20 cm long.How many tiles are needed for a 4 m row
January 14, 2015 by Keiyana

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

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

Grammar
Select the paragraph which is correctly punctuated: A) Her medications include Premarin 0.625 mg q.d., Hismanal 10 mg q.d., Enalapril 10 mg q.a.m., 5 mg q.p.m., normal saline nasal spray, as needed, Vancenase nasal spray, Septra one p.o. b.i.d., Afrin 1 spray t.i.d. B) Her ...
December 12, 2012 by Marie

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

calculus
A health club offers memberships at the rate of $300, provided that at least 50 people join. For each member in excess of 50, the membership fee will be reduced by $2 for all members. Due to space limitations, at most 125 memberships will be sold. How many membersips should ...
October 22, 2012 by dino

economics
Two companies, A and B, produce widgets. Each can produce 0, 1, 2, 3, or 4 widgets (they can’t  produce fractions of widgets). Let X be the number of units produced by A, and Y be the number of units produced by B. Given X and Y, widgets will sell at a price equal to $(14-X...
May 5, 2011 by Phil

Thermochemistry
A constant pressure calorimeter having a heat capacity of 60.8 kJ/K is used to measure the energy released from burning a compound in excess oxygen to form CO2(g) and H2O(l). If the enthalpy of combustion of the compound is -2914.0 kJ/mol and the temperature of the calorimeter...
December 4, 2011 by LaurenB

Physics II
The heating element of an electric oven is designed to produce 3.3 kW of heat when connected to a 240-V source. What must be resistance of the element?
February 8, 2008 by Jenny

math
Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.
June 22, 2009 by jessica

math
Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.
June 24, 2009 by sarah

prob
a music teacher wants to determine the music performances of students.a survey of wich group would produce a random sample
June 25, 2009 by Anonymous

chemistry
Calculate the volume ( L ) of the solute C3H8O3 and the mass ( g ) of the solvent H2O that should be added to produce 6050 g of a solution that is 1.17 m C3H8O3.
January 20, 2010 by tea

physics
a force of 20N is exerted on a court for 10 seconds. How long must a 40N force act to produce the same impulse?
March 15, 2010 by Jai

chemistry2
if 160g of Al reacts with O2 to produce 260g of Al2O3.calculate the theoretical yield and the percent yield 4Al+3O2 2Al2 O3
May 5, 2010 by chris

science
The enthalpy of combustion of methanol is -711 kJ/mole. What mass of methanol must be completely burned in oxygen to produce 71.1 kJ of energy?
November 9, 2010 by Anonymous

Nuclear Physics
If humans produce a 10mm wavelengh, what is their frequency? Find the energy emitted from humans off of the wavelength given.
December 9, 2010 by Raam

Physics
Two charges q1 and q2 when separated by a distance r1 = R produce a force F1on each other. If the separation is increased to r2 = 2R, what is the new force F2 in terms of F1?
February 8, 2011 by Alex

chemistry
What is the chemical equation for the reaction of manganese metal with sulfuric acid to produce aqueous manganese (II) sulfate and hydrogen gas
February 24, 2011 by Anonymous

chemistry
How many mL of 0.250 M MgCl2 must be added to 350.0 mL of 0.250 M NaCl to produce a solution in which the concentration of chloride ion is 0.300M Cl-?
August 30, 2011 by Holly

PHYSICS PLZ HELP!!!
What is the minimum number of 70 -Ohms resistors that must be connected in parallel to produce an equivalent resistance of 13 Ohms or less?
May 16, 2011 by mink

science
3x10 power 18 photon of certain light radian are found to produce 1.5 j of energy calculate wavelength of light radiation
June 24, 2011 by raghvendra

physics
how much must a car produce to drive 150 km if an average force of 500 N must be maintained to overcome friction?
April 29, 2012 by Anonymous

SCIENCE
which process does not produce a physical change of state? A) MELTING ICE B) HEATING WATER VAPOUR C) FREEZING WATER D) MY GUESS IS
December 13, 2012 by Taillen

scuence
if known h2 + br2 produce delta h 2hbr totaled 11.2 -72 then to decipher hbr gas into H2 and br2 as much heat is required?
November 18, 2013 by febhie

Physics
Two noises produce sound levels of 70 and 80 dB when acting separately. Find the sound level in dB when the sources act together.
December 6, 2014 by Suzanne

CHEMISTRY
CALCULATE THE MASS OF Na3PO3 PRODUCED AFTER 28.0g OF H3PO3 IS TREATED WITH 42.0g OF NaOH, AND ALSO CALCULATE THE MASS REMAINING OF THE EXCESS REAGENT. H3PO3+ 3NaOH = Na3PO3+ 3H2O
April 19, 2011 by dana

game theory
Two companies, A and B, produce widgets. Each can produce 0, 1, 2, 3, or 4 widgets (they can’t produce fractions of widgets). Let X be the number of units produced by A, and Y be the number of units produced by B. Given X and Y, widgets will sell at a price equal to $(14-X-Y...
May 5, 2011 by Phil

chemistry
A patient with polycythemia vera(excess production of red cells) receives raioactive phosphorus-32. Why would this treatment reduce the production of red blood cells in the bone marrow of the patient?
October 7, 2012 by Boo Boo

chemistry
A 2.33-g sample of a mixture of CaCl2 and Ca(NO3)2 is treated with excess AgNO3(aq). The precipitate is filtered off, dried and weighed. The dried precipitate weighs 3.9 g. What is the percentage by mass of CaCl2 in the original mixture?
October 7, 2012 by Kevin

Chemistry
1.578 g of an unknown hydrocarbon (110.7 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter,Cv, = 5.709 kJ/C and ΔT =7.995 C. Find ΔE for this hydrocarbon in kJ/mol.
March 31, 2015 by JUNDY

Chemistry
Aluminum oxide is formed by reaction of excess oxygen with aluminum. 4 Al(s) + 3 O2(g) -> 2 Al2O3(s) Calculate the mass of aluminum required to form 18.2 kg of aluminum oxide if the reaction has a percent yield of 83.4%.
October 2, 2014 by Cj

chemistry
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3NO2(g) + H2O(`) −! 2HNO3(`) + NO(g) If 745 L of NO2 gas react with water, what volume of NO gas will be produced? As- sume the gases are measured under the same conditions.
February 7, 2012 by Aaron

Chemistry
Air in the vicinity of a local power station contains 8.8x10^-4 gm^-3 SO2. What volume of 0.001moldm^-3 Iodine solution would be required to react with a solution obtained from 200dm^3 of contaminated air? The equation given is SO2 + I2 + 2H2O ==> H2SO4 + 2HI Thanks! :)
January 26, 2013 by Matt

Chemistry
In the SN2 mechanism, considering that the nucleophile attacks at the same time as the leaving group leaves, what would the effect of having a hindered (crowded) reaction center be on the rate of the reaction? Would you expect it to react slower or faster than an unhindered ...
April 14, 2014 by Laura

chemistry
How many milliliter of 0.150 M H2SO4 (sulfuric acid) are required to react with 1.87 g of sodium hydrogen carbonate, NaHCO3, according to the following equation? H2SO4 + 2NaHCO3 --> Na2SO4 + 2H2O + 2CO2 dont understand this am i suppose to change 1.87 into Molarity for ...
July 23, 2011 by Henry

Advanced Accounting
Estimated and Actual Goodwill Passion Company is trying to decide whether or not to acquire Desiree Inc. The following balance sheet for Desiree Inc. provides information about book values. Estimated market values are also listed, based upon Passion Companys appraisals. ...
April 11, 2010 by Tina

English
1. I liked the work very much because I could help orphans who needed love. 2. I liked the work very much because I could help children who had no father and mother. 3. I liked the work very much because I could help orphans who needed care. 4. I liked the work very much ...
October 24, 2010 by rfvv

Chem
The hydrolysis of sucrose into glucose and fructose in acidic water has a rate constant of at 25 degrees C. Assuming the reaction is first order in sucrose, determine the mass of sucrose that is hydrolyzed when 2.60 L of a 0.150 M sucrose solution is allowed to react for 190 ...
February 28, 2010 by Katherine

Biology 101
1. Which of the following statements is incorrect about homologous chromosomes? a. Homologous chromosomes are similar but not identical b. Homologous chromosomes have the same size and function c. Homologous chromosomes contain genes for the same kind of protein products d. ...
October 23, 2013 by Phillip

Chem
With which of the following will the weak acid HCHO2 react? If a reaction occurs, write the balanced molecular equation. If no reaction occurs write the left half of the reaction and use "NR". Do not include physical states in your answers. KOH: NH3:
November 1, 2011 by Colt

Chemistry
write out the balanced equation when Iron(II) sulfate, potassium permanganate, and sulfuric acid react to form Iron (III) sulfate, manganese (II) sulfate, Potassium sulfate, and water.
October 14, 2013 by Jane

Chemistry
A 11.0-mL sample of an unknown H3PO4 solution requires 116mL of 0.140 KOH to completely react with the H3PO4. What was the concentration of the unknown H3PO4 solution (answer in M). H3PO4(aq) + 3KOH(aq) --> 3H2O(l) + K3PO4(aq)
July 23, 2014 by April

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