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November 29, 2014

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: 18,664

meth
how many equal line segments are needed to make a row of 25 triangles
October 29, 2012 by Anonymous

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

chemistry
calculate the mass of naso4 needed to prepare of 0.5L of 0.15M of solution
November 14, 2012 by elissa

English
the rest of the vocab from November 12 please needed right now
December 12, 2012 by Maliha

Math
How many fencing materials will be needed if the measurements of the sides of the lot to be fenced are 37.5m and 24.8m?
January 16, 2013 by Anonymous

Math
How many fencing materials will be needed if the measurements of the sides of the lot to be fenced are 37.5m and 24.8m?
January 16, 2013 by Anonymous

fin/370
What information is needed in order to prepare a cash budget
January 17, 2013 by Anonymous

Maths
They were 336 people at a concert.if 2/3 were childre,how many chairs were needed for the adults?
February 12, 2013 by Siphosethu

Math
steps needed to solve one step mixed number g+9 3/4=15 1/2
March 15, 2013 by kalob Barnes

Chemistry
calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2
March 24, 2013 by Ale

Chemistry
calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2
March 24, 2013 by Ale

math
How many balls of clay and straws are needed to make a hexagonal pyramid?
March 25, 2013 by Victoria

chemistry
How many mL of 0.100M HCl are needed to neutralize 49.0mL of 0.104M Ba(OH)2 solution?
April 19, 2013 by Rochele

america government
precedent, while not absolute constraint on the courts,is needed
July 9, 2013 by Anonymous

Chemistry 12
Calculate the mass of K2CRO4 needed to make 3.00 L of a 0.0200 M solution.
October 8, 2013 by Riann

chemistry
What mass of oxygen is needed for the complete combustion of 5.0010−3g of methane?
October 14, 2013 by kristy

Math
Form 1 1/2 circles using only 1/4s. How many 1/4 pieces are needed to make 1 1/2?
October 27, 2013 by Sandy

Science
How much force is needed to make a 60 kg object accelerate at a rate of 2.0 m/s^2?
October 29, 2013 by AshKay

chem school
calculate the volume of 2.04 m al l oh 3 needed to neutralize 22.0 ml of 880m h2so4
June 24, 2014 by Ali

chemistry
How many milliliters of NO2 at 25.2 C and 738 torr are needed to form 16.1 g of HNO3?
July 4, 2014 by kelly

Chemistry
What mass KCl is needed to precipitate AgCl from 15.0 mL of .200 M AgNO3
October 20, 2014 by Skye

chemistry
how many milliliters of10.0m Hc(aq) are needed to prepare 890.0 ml of 1.00m Hcl(aq)
November 2, 2014 by lisa

English
Posted by rfvv on Tuesday, August 30, 2011 at 7:35pm. Posted by rfvv on Tuesday, August 30, 2011 at 2:04am. 1. The eighth square on the second row needed 256 spoons of rice, which amounted to a bowl. 2. The eighth square on the second row needed 256 spoons of rice, and it ...
September 1, 2011 by rfvv

chemistry
A catalyst alters the rate of a reaction by a. changing the products in the reaction. b. increasing the activation for the reaction. c. always providing a surface on which the molecules react. d. providing an alternate pathway for the reaction. e. increasing the concentrations...
February 24, 2012 by bob

Chemistry
When sulfuric acid reacts with ammonia solution an ammonium salt and water are produced. Calculate the volume of 3mol/dm3 of acid required to react exactly with 25ml of a 2.5mol/dm3 of ammonia solution.
June 5, 2012 by Jeconiah

Chemistry
C2H6(g) + O2(g) CO2(g) + H2O(g) (a) Consider the unbalanced equation above. What is the maximum mass of CO2 that can be produced when 21.0 g of C2H6 and 38.5 g O2 react? (b) If 24.7 g of carbon dioxide is actually produced by the reaction in part (a), what is the percent yield...
October 7, 2013 by Connor

History
Why did the institution of slavery develop in Africa? a. Africa had too many people b. Slaves were valued as goods to be sold and traded c. European traders introduced slavery to West Africa d. Africa had an excess of land and a shortage of labor A
February 20, 2009 by Bella

Algebra 2
Income tax for some states is computed by taking 3% of the excess income over $3,000 plus 1% of the first $3,000. How much tax is charged on a income of $2,000?
January 24, 2007 by Bryan

chemistry
Naturally occuring chlorine gas has 3 isotopes 35cl-35cl, 35cl-37cl , 37cl-37cl a) mass of one molecule in terms of amu. b) mass of one molecule in terms of grams. c) mass of one mole in terms of grams. d) Naturally occuring Cl has 75% 35cl and 25% 37cl, calculate the mass of ...
September 6, 2010 by Jake

chemistry
Naturally occuring chlorine gas has 3 isotopes 35cl-35cl, 35cl-37cl , 37cl-37cl a) mass of one molecule in terms of amu. b) mass of one molecule in terms of grams. c) mass of one mole in terms of grams. d) Naturally occuring Cl has 75% 35cl and 25% 37cl, calculate the mass of ...
September 6, 2010 by Jake

math
1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for neutralization. Calculate the percentage of cac03 and mgc03 in the sample The answer 52.02% mgc03 caco 47.98% Bob helps me step by step Thank you
December 8, 2013 by Fai

Physics
Both drawings show the same square, each of which has a side of length L=0.75 m. An observer O is stationed at one corner of each square. Two loudspeakers are locate at corners of the square, as in either drawing 1 or drawing 2. The speakers produce the same single-frequency ...
July 9, 2013 by Vivien

chemistry
The first step in the Ostwald process for making nitric acid is the formation of NO as follows; 4HN3 + 5O2 makes 4NO + 6 H2O. According to the equation, 5 moles of NH3 will react stoichiometrically with blank moles of O2 to form blank moles of NO. I can't figure out how to ...
October 19, 2010 by lavonne

Computer
How do you solve this algorithm problem? Suppose that you are given a sequence of n elements to sort. The input sequence consists of n/k subsequences, each containing k elements. The elements in a given subsequence are all smaller than the elements in the succeeding ...
October 8, 2013 by Jeremy

chem
Hint: Remember that reactions happen in moles. So figure out the moles that reacted then use the molarity formula to continue solving the problem. What volume of 0.699 M K3PO4 is required to react with 68 mL of 0.661 MMgCl2 accord- ing to the equation 2K3PO4 + 3MgCl2 ! Mg3(PO4...
September 5, 2012 by John

Social Studies
how would voters most likely react if political leaders raised taxes by 50% ? A. they would not make any changes in their behavior. B. They would demand more public goods and services. C. They would stop voting in elections. D. They would not re-elect the leaders. i think A.
September 11, 2014 by chris w

Socials
Imagine that you are a factory owner in eighteenth-century britain. Write a letter from an employer's point of view to a friend explaining why you think child labour is important to the economy and why it is undesirable to improve working conditions. Dear....... Child labour ...
November 29, 2009 by Sara

Chemistry
Rolaids once ran a national advertising campaign in which it claimed that Rolaids consumes 47times its own weight of excess stomach acid. Can this be true. (Assume that stomach acid is .100M HCl and that its density is 1g/ml. I have no idea how to go about this problem could ...
April 1, 2010 by Anonymous

computer
The following RAM chips are specified by the number of words times the number of bits per word. For each, specify: a. The number of address lines needed for each memory chip b. The number of data lines needed for each memory chip c. The number of bytes that can be stored in ...
March 26, 2011 by bode

chemistry
Iron reacts with chlorine to form iron(iii)chloride. A)How many chlorines react with 1.86g of iron? B)What mass of iron(iii)chloride is produced?
October 23, 2013 by Ava

chemistry
H2(g) + Cl2(g) HCl(g) Consider the unbalanced equation above. 3.95 L of H2 and 1.00 L of Cl2 are reacted under the same conditions of temperature and pressure. (a) How many liters of HCl will be produced? (b) How many liters of reactant are in excess? i found part a to be 2.00...
October 20, 2014 by olivia

Science ~conversions~
On my physics home work i have a question that puts the weight in grams, and i need to find the acceleration. I know that the formula is F=ma, and Force is in newtons, mass is in kg and acceleration is in m/s^2. but can you still find the acceleration by using grams with out ...
December 5, 2012 by Maggie

chemistry
*The Nernst Equation and pH* Sulfuric acid is a very strong acid that can act as an oxidizing agent at high concentrations (low pH). Under standard conditions, sulfuric acid has a low reduction potential, SO4^2-(aq) + 4H^+(aq) + 2e^- <=> SO2(g) + 2H2O(l),.....+0.20V ...
March 31, 2010 by Sarah

Chemistry
This question was posted: At 22 C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the compound at 22 C? I have found my [OH-] concentration (3.63x10^-4) but I am looking ...
July 8, 2012 by jen

Physics
In a Milliken type experiment, two horizontal parallel plates are 1.0 cm apart. A sphere of mass 2.2 x 10^(-13) kg remains stationary when the potential difference between the plates is 350V with the upper plate is negative. How much excess or deficit of electrons does the ...
July 23, 2012 by KnowsNothing

science
can someone edit my lab report please? Here it is Purpose: The purpose of this experiment was to distinguish six substances observing how they react in fluids and to identify them by their properties. My hypothesis by the end of this experiment, I will discover what the ...
September 20, 2006 by the shadow

Chemistry - Science
A fuel cell designed to react grain alcohol with oxygen has the following net reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) The maximum work that 1 mol of alcohol can yield by this process is 1320 kJ. What is the theoretical maximum voltage this cell can achieve?
May 3, 2014 by Ana

Chemistry
Silver ion reacts with excess CN- to form a colorless complex ion,Ag(CN)2 , which has a formation constant Kf = 3.0*10^20 . Calculate the concentration of [Ag] in a solution prepared by mixing equal volumes of 1.810−3m NaNO3 and 0.20M NaCN. When I did the problem which ...
April 7, 2011 by Kris

math
The Wyndsor Glass Co produces high quality windows and glass doors. It has three plants. Plant 1 makes aluminum frames Plant 2 makes wood frames Plant 3 makes glass and assembles the products The company wants to introduce 2 new products: 8 ft glass door with aluminum ...
November 23, 2008 by ra

math
The Wyndsor Glass Co produces high quality windows and glass doors. It has three plants. Plant 1 makes aluminum frames Plant 2 makes wood frames Plant 3 makes glass and assembles the products The company wants to introduce 2 new products: 8 ft glass door with aluminum ...
November 23, 2008 by ra

chemistry
How many grams of C6H12O6 need to be dissolved in 350g of water vto have a solution which freezes at -2.50 degrees celcius? delta T = Kf*m You know Kf, m = molality = mols/kg and mols = grams/molar mass, delta T is 2.50. Solve for grams. Post your work if you get stuck. what ...
May 31, 2007 by jessica

physics please help
The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 10-4 m2. A compressional force in excess of 6.90 104 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. (b) What is the strain that exists under a maximum-stress ...
November 14, 2010 by dan

Chemistry
Na₂CO₃ (s) + 2HCL (ag) → 2NaCl (ag) + CO₂ + H₂O (l) If 4.25g of sodium carbonate is reacted completely with excess hydrochloric acid as 3M HCl, how many mL of HCl would be consumed? Note: Assume 3M HCl contains 3.00 moles of HCl per liter of ...
April 30, 2012 by Shelby

chemistry
The balanced equation is shown below. 2 HCl(aq) +CaCO3(s)=CaCl2(aq) +H2O(l) +CO2(g) 2.00 dm3 of a 3.00 M hydrochloric acid solution is added to the kettle (this is an excess). During the reaction 1.20 dm3 of CO2 is produced (assume 250C and 1 atmosphere) How many moles of CO2 ...
October 27, 2014 by Abaoaqu

chemistry
How many milliliters of glycerol, C3H8O3(d=1.26g/mL), must be added per kilogram of water to produce a solution with 4.85 mol % C3H8O3? Kinda lost -.-;
February 21, 2010 by david

PHYSICS
A 29.4 cm long solenoid 1.10 cm in diameter is to produce a field of 0.360 T at its center. How much current should the solenoid carry if it has 1000 turns of the wire?
April 3, 2010 by JOSE

math similiar figures
The pyramid above has a base of 48 square inches and a height of 17 inches. Which set of dimensions would produce a similar figure?
March 29, 2011 by Anonymous

Chemistry Help!!
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for this reaction.
October 11, 2011 by Maci

statistics
True or false? Every random sample of the same size from a given population will produce exactly the same confidence interval for μ.
February 18, 2012 by jr

physics
Suppose a cars brakes can produce an acceleration of -7m/s^2. If the car is traveling at an initial speed of 28m/s, what is the minimum distance necessary to stop the car?
July 7, 2012 by james

physics
a new brand of solar panel generates 500 watts of electrical energy. how much energy would it produce after 24 years."
October 31, 2012 by Alex Reynolds

chemistry
_A2(SO3)3+_NaOH->_Na2SO3+_Al(OH)3 if you start with 389.4 g of Al2(SO3)3 and you produce 212.4 g of Na2SO3, what is your percent yield for this reaction?
November 10, 2012 by kelly

physics
A solenoid of radius 2.30 cm has 380 turns and a length of 15.0 cm. (a) Find its inductance. (b) Find the rate at which current must change through it to produce an emf of 76.0 V
November 12, 2012 by Anonymous

Biology
12. A main difference between fungi and plants is that fungi a. have cell walls. b. produce spores. c. cannot make food. d. all of the above.
January 8, 2013 by Please&ThankYou

science
which rna basr sequence wod produce the amino acid sequence : Valine Proline Alinine a.GCGCGUUG B. GUGCCUGCG C. GUUCCCACU D. GCUCUUGCU
March 11, 2013 by mary

science
5.0g of magnesium metal reacted with 1000cm3 of 4.5M HCl solution to produce hydrogen gas. Calculate the amount of HCl left after the reaction
June 29, 2013 by samuel

Chemistry
At 10C zinc reacts with 2.0M sulphuric acid to produce 17 mL hydrogen gas in 20 s a) what is the rate of this reaction? b)What volume of hydrogen might be produced in 20 s at 30C?
July 11, 2013 by Tash

Math
If a gas water heater was able to produce 25000 btu/hr, how long would it take to heat 30 gal of water from 70f to 140f
January 29, 2014 by Shannon nault

science
The primary color of pigments ANSWER ARE Are the same as the secondary color of light Combine in equal amount to produce black All of above Thank You
April 9, 2014 by snow

Physics
How far from a converging lens with a focal length of 15 cm should an object be placed to produce a real image which is half the size of the object? How do you solve this? Thanks!
August 3, 2014 by Xander

physics
a boy stands at a distance of 168m from a high wall . he produce a sound and haers after 1 second.calculate the speed f sound in air
September 14, 2014 by jenny

PRINCIPLES OF PROGRAMMING LOGIC
HOW CAN I DRAW A FLOWCHART THAT WILL PRODUCE THE FOLLOWING OUTPUT REPORT, ITEM, PRICE, QUANTITY AND SUBTOTAL USING MAINLINE LOGIC?
November 20, 2014 by NTHABELENG

chemistry
1-Dinitrogen tetroxide (N2O4) dissociates according to the equation: N2O4 ⇌ 2NO2 An equilibrium reaction mixture at 25 C was found to have the partial pressure of N2O4 as 72 kPa whilst the partial pressure of nitrogen dioxide (NO2) was 29 kPa. Calculate Kp for the ...
July 27, 2014 by John

chemistry
1.00 g zinc and 0.80 g sulfur are allowed to react all the zinc is used up 1.50 g of zinc sulfide is formed and some unreacted sulfur remains what is the mass of unreacted sulfur
February 3, 2013 by tony

health insurance
Suppose as a worker your health insurance currently allows you to buy whatever prescription drugs you wish for $2. Then in contract negotiations, it is changed to $10 for generic and $20 for brand name drugs. How would you react and economic analysis would you predict?
May 6, 2009 by John

Chemistry
1) what mass of oxygen will react with 2.64g of magnesium? 2Mg + O2 -> MgO I was going to do 2.64g * (1/2) from the equation but im not sure. Do I have to add a 2 in front of the MgO? 2) How many moles of sodium ions are present in 2.50 L of 0.300 M Na3PO4? I know M=moles/L...
December 4, 2011 by Hannah

PHYSICS
A physical pendulum consists of a disc of radius R and mass m fixed at the end of a rod of mass m and length l . (a) Find the period of the pendulum for small angles of oscillation. Express your answer in terms of m, R, l and acceleration due to gravity g as needed (enter m ...
November 6, 2013 by Anonymous

PHYSICS
A physical pendulum consists of a disc of radius R and mass m fixed at the end of a rod of mass m and length l . (a) Find the period of the pendulum for small angles of oscillation. Express your answer in terms of m, R, l and acceleration due to gravity g as needed (enter m ...
November 8, 2013 by Anonymous

history
Why did the institution of slavery develop in Africa? a. Africa had too many people b. Slaves were valued as goods to be sold and traded c. European traders introduced slavery to West Africa d. Africa had an excess of land and a shortage of labor i know its not A . its either ...
February 22, 2009 by Bella

chemistry
Excess florine, F2(g) reacts at 150 degrees celius with bromine, Br2(g) to give the compound BrF(n). If 423 mL of Br2 at 150 Degrees and 748mmHg produced $.20 g BrF(n), what is it? describe the bonding in the molecule, using valence bond theory.
April 8, 2010 by Emily

physical chemistry
1000 ml of oxygen at ntp passed through siemens ozoniser when the resulting volume was 888 ml at ntp .quantity of ozonised oxygen is passed through excess of potassium iodide solution calculate weight of iodine liberated?
April 13, 2013 by Anonymous

chemistry
So I did an experiment at school in which we had to form 2.00 grams of precipitate by mixing 2 hydrated compounds. So for the products, obviously one of it is water, and the other 2 products are compounds, one of which, is insoluble. So when I measured the amount of ...
September 15, 2013 by K

physics
A 68 student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down. With each jump, he accelerates to a speed of 3.4 before leaving the ground.
November 28, 2011 by ekaterina

Chemistry
What volume of 3.0M Na2SO4 must be added to 25ml of 1.0M BaCl2 to produce 5.0g of BaSO4? The answer is 7.1ml but I don't get it very well. I thought I could use mole ratio of the balanced equation, but it did not work. Thanks a lot!
September 19, 2008 by Andrew

Chemistry
If a hydrate of the formula MCl * xH2O decomposes when heated to produce HCL, what change would you expect to occur when a piece of litmus paper is held in the path of the vapor released?
October 14, 2008 by Chloe

Genetics
Phenylketonuria is a metabolic disease of humans that results from an autosomal recessive gene. If the frequency of phenylketonurics in the population is 9/10,000, what is the probability that two normal individuals will produce a diseased child?
November 13, 2008 by Keira

History
not sure how did England's preoccupation with its civil war affect the colonies? they were forced to support the king they were left alone they developed ties to France they started to produce manufactured goods ?
February 21, 2009 by Bella

Chemistry
calculate the concentration of sodium benzoate that must be present in a 2.0M solution of benzoic acid (C6H5COOH) to produce a pH of 4.00. THIS IS THE ONLY INFORMATION GIVEN. I CANNOT FIND Kb ANY WHERE IN MY TEXT NOR DOES IT GIVE US A VOLUME. CAN ANYONE HELP?
May 27, 2010 by Lucinda

Biology
What is the name given to the types of organisms that exclusively use aerobic cellular respiration to break down glucuse to produce ATP for energy? Provide three specific examples
August 31, 2010 by Bill

physics
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.80 . At 30.0 after blastoff, the engines suddenly fail, which means that the force they produce instantly stops.
October 5, 2011 by mandy

chemistry
find the average molar mass of polyethylene when 4.40 g of the polymer is dissolved in benzene to produce 200.0 mL of solution and the osmotic pressure is found to be7.60 torr ant 25 celcious Degree.
April 2, 2012 by Anonymous

Psychology
Electroconvulsive therapy may produce immediate relief from depression, but: A. may result in schizophrenia. B. can also change the hemisphericity of the brain. C. is not a long-term improvement. D. should not be used more than once. B
August 8, 2013 by Angela

Psychology
lectroconvulsive therapy may produce immediate relief from depression, but: A. may result in schizophrenia. B. can also change the hemisphericity of the brain. C. is not a long-term improvement. D. should not be used more than once. B
August 9, 2013 by Angela

Chemistry URGENT
I need help balancing a equation for the combustion of cellulose in oxygen to produce carbon dioxide and water vapor. C6H10O5 = 6CO +5H2O I know this is not correct but I don't know what else to do to get this to balance. Thanking you in advance.
March 27, 2014 by linda

Health
In addition to causing hallucinations, some hallucinogens also produce ________. A. Rapid, intense emotional swings B. Promiscuity in women C. Animalistic behavior D. All of the above My guess is A.
August 18, 2014 by Scarlett

Social Studies
Which of the following reasons made Oglethorpe recruit the Highland Scots? A. their clan colors B. The were good soldiers and fighters C. The knew how to produce silk D. They brought stronger cattle with them Is it C?
September 22, 2014 by Amber

Chemistry
20.When black gunpowder explodes, potassium nitrate, carbon, and sulfur react with each other to form nitrogen, carbon dioxide, and potassium sulfide. If thee original mixture contains 50.0 g of potassium nitrate, what is the total volume of the gases produced in the reaction...
May 15, 2008 by Ali

Chemistry
if i place C6H14 and KI in a test tube, then some metal salt (MNO3) is added... If the M+ reacts with and oxidizes the I, What color is c6h14? I think its purple.. but im not sure why it would be that color .. :S .. care to explain please ? and if it doesnt react .. what color...
March 29, 2011 by emily

Chemistry
How many grams of calcium carbonate are consumed per 500 g of sulfur (IV) oxide? in what reaction?
May 30, 2007 by LaShanda

Human Biology
I have a value of energy for a meal in kJ. How do I convert this into grams please?
January 10, 2008 by Sarah

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