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July 23, 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: 21,998

Physics
A major-league pitcher can throw a baseball in excess of 48.3 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 15.3 m away from the point of release?
April 12, 2012 by Nana

Physics
A major-league pitcher can throw a baseball in excess of 46.6 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 16.3 m away from the point of release?
September 11, 2012 by Jack

physics
A major league pitcher can throw a baseball in excess of 40.8 m/s. if a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 15.4 m away from the point of release?
September 18, 2012 by Anonymous

Physics 1
A major-league pitcher can throw a baseball in excess of 40.6 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 19.8 m away from the point of release?
September 18, 2012 by Anonymous

history
3. Among members of George Washington's cabinet, __________ had a pessimistic view of human nature and a dread of democratic excess. A. Hamilton B. Adams C. Jefferson D. Marshall
January 30, 2013 by shaun

physics
A major-league pitcher can throw a baseball in excess of 46.2 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 18.9 m away from the point of release?
October 14, 2013 by butcha

physics
A major-league pitcher can throw a baseball in excess of 46.2 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 18.9 m away from the point of release?
October 15, 2013 by butcha

chemistry
When you add 0.320 g of sodium metal to an excess of hydrochloric acid, you find that 3330 J of heat are produced. What is the enthalpy of the reaction as written below? 2Na(s) + 2HCl(aq) --> 2NaCl(aq) +H2(g
March 9, 2015 by Catherine

chemistry
When you add 0.567 g of sodium metal to an excess of hydrochloric acid, you find that 5890 J of heat are produced. What is the enthalpy of the reaction as written below? 2Na(s)+2HCl(aq)=2NaCl(aq)+H2(g)
April 13, 2016 by lex

physics
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F⃗ = −C1rv⃗ , where C1 is a constant. At time t = 0, a small ball of mass m is projected into a liquid so that it initially has...
October 14, 2013 by Anonymous

physics
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F⃗ = −C1rv⃗ , where C1 is a constant. At time t = 0, a small ball of mass m is projected into a liquid so that it initially has...
October 14, 2013 by Anonymous

physics
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F⃗ = −C1rv⃗ , where C1 is a constant. At time t = 0, a small ball of mass m is projected into a liquid so that it initially has...
October 14, 2013 by Anonymous

Chemistry
Hello! I am having a little difficulty answering these two questions on my homework, I was wondering if anyone could please help me out! Thank you! 1) Consider the following balanced chemical equation for the neutralization reaction of calcium hydroxide with hydrochloric acid ...
November 30, 2013 by T.C.

math
how can i make the Protein content equal the same %. what did i do wrong? Breakfast: Flour protein Fat content = 2 grams 1 gram contains fat of 9 calories 2 grams contain fat of 9 x 2 = 18 calories Total quantity = 162 calories Fat content = (18/162) x 100 = 11.11% Protein ...
July 28, 2011 by tamika

Chemistry (check)
using the equation 2H+O--->2HO,______ of hydrogen will react with 6 mol of oxygen. Would "12 Mol" be rigt to fill in the blank? yes thanks!!
January 18, 2007 by Briana

Chemistry
10% of a sample reacts in 25 s. If the reaction follows first order kinetics, how long would it take for half the sample to react?
May 3, 2010 by mandy

chemistry
why will chlorine react in a water that is very clear but chemical has iron content?which turns it brownish.and what is the fastest why to remedy the water?
June 16, 2010 by florence

chemical equilibrium
if the pressure of n2/h2 in aclosed apparatus is 100 atm and 20 percent of the mixture then react ,the pressure at the same temperature would be
August 15, 2010 by bharat

3rd grade science
All living things respond in certain ways to ______ in their environment. A.. Changes B.. Respond C.. React
August 18, 2010 by mary

Chemistry
"How many moles of oxygen are required to react completely with 5 mol C(8)H(18)?" 2C(8)H(18) + 25O(2) => 16CO(2) + 18 H(2)O In the question, how do I know if "oxygen" means the molecule O(2) or the element O?
September 21, 2010 by Gray

chemistry
consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction ?
December 4, 2010 by obi

Chemistry
What is the maximum mass of the lower molar mass product that can be formed when 71.0 g of solid barium bromide and 44.5 g chlorine gas react?
April 10, 2011 by Robbie

Orgo
1. Calculate the number of moles of cyclohexanol used in the following reaction: 10.5 mL of cyclohexanol and 9mL of H2SO4 react to form cyclohexene
April 26, 2011 by Nicole

chemistry
Refer to the following unbalanced equation: C6H14 + O2 CO2 + H2O What mass of oxygen (O2) is required to react completely with 10.8 g of C6H14
November 7, 2011 by Anonymous

chemistry
help me find which reactant is the limiting reactant when 74 g NaOH and 44 g CO2 are allowed to react when the equation is (2NaOH+1CO2=Na2CO3+1H2O)
April 9, 2012 by corey

Chemistry
CH4(g) + 2O2(g) = CO2(g) + 2H20(g). What volume of O2 is required to react with 2.0 mol CH4 at 50 degrees Celsius and .500 atm?
February 18, 2013 by Maria

History
Helium doesn't react with any other substance. Is it accurate to say that helium has no chemical properties? Explain. Please help because I'm not sure of the answer. Thank you.
September 13, 2013 by Sarah

Science
Helium doesn't react with any other substance. Is it accurate to say that helium has no chemical properties? Explain. Please help because I'm not sure of the answer. Thank you.
September 13, 2013 by Sarah

Chemistry
What is the maximum mass of the lower molar mass product that can be formed when 83.0 g of solid barium bromide and 20.5 g chlorine gas react?
October 7, 2013 by Connor

chem
What volume of carbon dioxide gas (at STP) is produced when 1.01 moles of oxygen gas react completely? 2CO + O2 -> 2CO2
November 10, 2013 by Dakota

chem+ help!
When 80.0 grams of a certain metal at 90.0 C was mixed with 100.0 grams of water at 30.0 C, the final equilibrium temperature of the mixture was 36.0 C. What is the specific heat (J/gC) of the metal? I suppose I would use this formula: q= mct m= mass(g) q= enthalpy change...
January 23, 2007 by bon

Chemistry
Fool's gold is not gold at all but only lead IV sulfide. If you have 751.0 grams of lead how many grams of fool's gold can you make? Ans: Pb+2S->PbS2 Given * (1/amu of given) * (mol of find/mol of given) * (amu of find/1mol)
November 18, 2012 by Maria

math
james brought a few hamsters. for each day after the first day of the week, the hamsters at 20 grams of food than the previous day. the hamsters grew fast, finishing 1260 grams of food in the first week. how much food did the hamsters eat on the first day?
March 31, 2013 by shohanur

math
james brought a few hamsters. for each day after the first day of the week, the hamsters at 20 grams of food than the previous day. the hamsters grew fast, finishing 1260 grams of food in the first week. how much food did the hamsters eat on the first day?
March 31, 2013 by shohanur

chemistry (drbob222)
[Ni(NH3)m(H2O)p]^2+ + mHCl ->mCl- + pH2O + Ni^2+ + mNH4^+ excess HCl + OH- -> H2O A .185 g sample of nickel salt was dissolved in 30.00 mL of 0.1013 N HCl. The excess HCl required 6.30 mL of 0.1262 N NaOH to reach the end point. Calculate the weight of the salt that ...
October 4, 2009 by Anonymous

Chemistry
Write the balanced net ionic equations for the reactions of the halogens with copper metal. The halogens are oxidizing agents and the copper metal is a reducing agent. a) Bromine (Br2)+copper metal (Cu) b) Iodine (I2) + copper metal (Cu) Based on your observations and ...
April 16, 2014 by Caroline

statistics
a study found 37% of a new technique resulted in pregnancy and in that technique 25% resulted in multiple births what is the probabilty that the new technique produced a pregnacy and multiple births what is probability that a random selected pregnancy did not produce multiple ...
June 6, 2013 by jane

Inorganic chemistry
One kind of battery used in watches contains mercur(II) oxide. As current flows, the mercury oxide is reduced to mercury. HgO(s) + H2O(l) + 2e^- ==> Hg(l) + 2OH^-(aq) If 2.5x10^-5 amperes flows continuously 1095 days, what mass of Hg(l) is produced? (2.5x10^-5)(1095days)(...
April 14, 2009 by Steve

Physics
Two Balls of masses mA = 45 grams and mB = 65 grams are suspended as follows: both Balls are hanging by a 30 cm string and are vertically parallel to each other. The lighter ball is pulled away to a 66 degree angle with the vertical and is released, hitting the larger mass. a...
April 9, 2013 by Enzo

chemistry
URGENT!! You wish to prepare 1 L of a 0.02 M potassium iodate solution. You require that the final concentration be within 1% of 0.02 M and that the concentration must be known accurately to the fourth decimal place. How would you prepare this solution? Specify the glassware ...
October 11, 2010 by Martin

Physics
an 88kg cardboard box is being pulled along a level floor. the coefficient of static friction between the box and the floor is 0.23, and the sliding friction is 0.12. What is the weight of the box? What force is needed to start the box moving? What force is needed to keep the ...
October 29, 2012 by Zach

Algebra
Use this proportionality: A correlation V square 2/3 How much more material is needed to manufacture an industrial plastic container with twice the volume of a similar container? A manufacturer of plastic containers prices its product by the amount of plastic used to make the ...
November 26, 2011 by John

Math 11u
A Computer company has been selling 1200 computer games per week at $18 each. Data indicates that for each $1 price increases, there will be a loss of 40 sales per week. It costs $10 to produce each game. Let x represent the number of $1 price increases. a)state the revenue ...
July 17, 2010 by Kerry

Chemistry_DRBob222
Hello Dear I hope everything gorse very well. I did not get any respond from you. I render my solution to the problem over CO2 aq. + H2O ...> H2CO3 how much PH can be put at for the above-equation under P = 3600 psi, T= 190 oF, 0.208 liters fresh-H2O as we know, 1.45 grams ...
April 19, 2014 by Ramtin

Chemistry
2Fe2O3 -> 4Fe+3O2 changeHrxn= +824.2 KJ The decomposition of 57.0 g of Fe2O3 results in The release of 23500 KJ of heat The absorption of 147 KJ of heat The absorption of 23500 KJ of heat The absorption of 294 KJ of heat The release of 294 KJ of heat The release of 147 KJ ...
October 9, 2012 by Anonymous

Calculus
The police department must determine a safe speed limit on a bridge so that the flow rate of cars is at a maximum per unit time. The greater the speed limit, the farther apart the cars must be expected to be in order to allow for a safe stopping distance. The total distance ...
November 9, 2012 by Max

volume stoichiometry
Determine the volume of oxygen that is needed at STP to completely react with 5.63 g of potassium. 4K + O2 yields 2H2O I don't buy the equation. If K is reacting with oxygen, then the equation is 4K + O2 ==> 2K2O Actually, I think it forms K2O2. Do you have any information ...
March 19, 2007 by shelley

Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in the tank and the ...
April 18, 2011 by Lindsey

Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in the tank and the ...
April 19, 2011 by Lindsey

physics opinion
A common pickup for an electric guitar consists of a coil of wire around a permanent magnet. The permanent magnet induces magnetism in the nearby guitar string. When the string is plucked, it oscillates above the coil, thereby changing the magnetic field that passes through ...
May 16, 2012 by Alice

Economics
As a manager of a financial planning business you have two financial planners, Phil and Francis. In an hour, Phil can produce either one financial statement or answer 8 phone calls, while Francis can either produce 4 financial statements or answer 10 phone calls. Does either ...
February 11, 2010 by Quinn

Chem Help!
I really need help for my homework on how to write the balanced equation for the following reactions. 1) Sodium reacts with iron(lll)oxide to produce sodium oxide and iron. Type of reaction: Balanced Equation: 2) Hydrogen bromide forms from hydrogen and bromine. Type of ...
April 8, 2008 by Lisa

Chemistry
Calculate the molecular mass of the nonionic solutes. 8.02 grams of solute in 861 grams of water lower the freezing point to -0.430 celsius. the freezing point of H2O is lowered 1.86 celsius per mole of solute. the boiling point of H2O is raised 0.512 celsius per mole of solute.
November 22, 2010 by Jose Reyes

Social Studies (Check, Please!) (Ms. Sue)
1. How did the Lend-Lease Act help the Allied war effort? A: The Lend-Lease enabled the United States to lend or lease more than $40 billion in weapons, vehicles, and other supplies to those involved in the Allied war effort. 2. What government policies helped American ...
January 2, 2016 by Victoria

chemistry lab
determine the amount of solute needed to make 100ml aqueous solution of NaCl and MgCl2 that will cause a 10 degree change in freezing point. Determine the amounts of solute needed to make 100ml aqueous of AlCl3 and ethanol that will cause a 10 degree change in boiling point.
February 7, 2011 by shaknocka

Physics
A sled mass of 40 kg is pulled along a snow covered surface. The coefficient of static friction is 0.40 and the coefficient of sliding friction is 0.25 a) what force is needed to start the sled moving? b)what force is needed to start to keep the sled moving at a constant speed...
May 6, 2015 by Sarah

Physics
A sled mass of 40 kg is pulled along a snow covered surface. The coefficient of static friction is 0.40 and the coefficient of sliding friction is 0.25 a) what force is needed to start the sled moving? b)what force is needed to start to keep the sled moving at a constant speed...
May 6, 2015 by Sarah

biology
which of these crosses will only produce heterozygous offspring? a. aa x aa b. Aa x Aa c. AA x Aa d. Aa x aa e. AA x aa
March 13, 2008 by sophon

Chemistry
What molarity of NaOH would produce a pH of 10? And how do you calculate it?
April 16, 2008 by Ashley

Science
How many oranges will one orange seed produce?
March 2, 2009 by Debbie

chemistry
when 50 g of H2S reacts with 50 g of O2, how much SO2 will it produce?
December 13, 2010 by John

science
what changes in an atom produce an atomic spectrum?
June 9, 2011 by harold

chemistry
15 GREM OF C6H12O6 WILL PRODUCE HOW MUCH CO2?
June 12, 2011 by salu

chemistry
If 50.0 g of Ba(CN)2 reacts to produce 12.9 g of HCN, what is the percent yield?
January 21, 2012 by David

biology
Show that germinatingseeds produce heat energy.
January 20, 2013 by Anonymous

MATH
WHICH BENCHMARK FRACTION COULD YOU USE TO ESTIMATE THE PRODUCE OF 36 X 11/16?
March 24, 2013 by ALEXIS

need help biology
3 factors the could produce bias in an experiment
October 18, 2013 by loli

biology need help
3 factors the could produce bias in an experiment
October 19, 2013 by loli

Science
What do angiosperms produce in order to protect their seeds?
February 11, 2015 by Anonymous

chemistry
How many kilocalories are required to produce 1.83mol of aluminum?
March 9, 2015 by dakota

science
how would you produce a pure sample of hexane
April 27, 2016 by Denanda

Chemistry
How many ethane will be burnt to produce 0.1moles of steam.
May 3, 2016 by Gravity

math
A sack of sand measures 21 kilograms and 714 grams,and a sack of yard clippings measures 7 kilograms and 192 grams. How much more does the sack of sand measure than the sack of yard clippings?
November 10, 2011 by Sanaya

Math
I forget how to do these type of word problems. Assume you working on the house pictured below. The length of the house is 50 feet, the width is 30 feet, and from the ground to the gable (the height of the rectangle) is 10 feet. The height of the triangular prism on top is 6.5...
September 26, 2012 by Alisa

pharma medicine
you are combining 50ml of a 20%sol,150ml of a 15% sol.,and 200ml of a 35% sol.what is the final % concentration of the mixed sol. how many total grams are is the final sol? Grams total= .2*50 + .15*.15 + 200*.35 This is making a big assumption: that the density of the ...
December 2, 2006 by rimple

chemistry
A student is performing an experiment to find the density of water. She obtains a 100ml beaker, which weighs 53.257 grams, and she fills it with 60 mL of water. The temperature of the water is 25.5 degrees celsius (room temperature). Again the student takes the weight of the ...
February 16, 2015 by Samantha

Physics
Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees Celsius. What is the...
March 1, 2011 by Amanda

Physics
Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees Celsius. What is the...
March 2, 2011 by A

Physics
Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees Celsius. What is the...
March 2, 2011 by A

Physics
Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees Celsius. What is the...
March 2, 2011 by A

Physics
Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees Celsius. What is the...
March 2, 2011 by A

Chemistry
Questions: 1. In each test tube, a precipitate formed upon DROPWISE addition of the second reagent (steps 5 and 6). What are these precipitates? (a) First test tube with HgCl : (b) Second test tube with SnCl : 2. In each test tube, which reagent was limiting and which was ...
April 7, 2012 by Maranda

Chemistry
Ok so reviewing my notes I also got 11,326.6 as the volume in ml. The density of water he wanted us to use was (0.9975) and I went from 1 gal of H2O = 3.785 liters = 3785 grams then multiplied by 3 giving me 11,355g H2O. The only other step I could come up with was using the ...
September 25, 2012 by Holly

Physics
How many excess electrons does an object with a total charge of -1.0 x 10exp-9C have on it? This is approximately the amount of charge involved in commonly encountered static electricity.
May 10, 2010 by Nina

chemistry!!! /10th grade
How many molecules of hydrogen are produced if 13.05 g of Zn reacts with excess hydrochloric acid equation Zn plus HCL equals ZnCl2 plus H2?
May 31, 2010 by meme

Chemistry
Please help solve; 2Al +3Cl2 --> 2AlCl3 You are give 31.0g Al and 36.0g of Cl2. If you had excess chlorine, how many moles of of aluminum chloride could be produced from 31.0 g of aluminum?
September 28, 2010 by Jeremy

english
recommending the purchase of excess equipment to use up your allocated funds before the end of the fiscal year so that your budget won't be cut next year.
February 13, 2011 by minnie

physics
A 0.10 g plastic bead is charged by the addition of 1.0 x 1010 excess electrons. What electric field (strength and direction) will cause the bead to hang suspended in the air?
July 21, 2011 by Jessika

10th grade chemistry
If an excess of nitrogen gas reacts with 25.0 L of hydrogen gas, according to the reaction below, how many L of ammonia will be produced? N2(g) + 3H2(g) ---> 2NH3(g)
May 29, 2012 by skyler

general chemistry
A 1.24g sample of a hydrocarbon, when completely burned in excess of O2(g), yields 4.04g CO2 and 1.24g H20. Determine the empirical formula.
February 6, 2013 by StressedStudent

physical sciences
to find out whether the amount of heat(gas)produced will depend on an increase on the concetration of HCL when HCL reacts with an excess Zn
June 4, 2013 by esmah

physical sciences
to find out whether the amount of heat(gas) produced will depend on an increase on the concetration of HCL when HCL reacts with an excess Zn
June 4, 2013 by esmah

Chemistry
The reaction between 32.0g of CH4 and excess oxygen gas produces 75.9 of CO2 gas and some water. Determine the percent yield? Plss help :((
March 12, 2014 by juju

personal finance
PSI, a financial services consultant, estimates that over _____ million U.S. households have a net worth in excess of $1 million. A. 4 B. 5 C. 10 D. 20 D ?
April 3, 2015 by Ciara

chemistry
7.20 moles of C3H8 are burned in a room with excess oxygen gas. How many moles of carbon dioxide are released into the atmosphere during this process ?
January 25, 2016 by Boberto

physics
A capacitor has a capacitance of 7.28uF. What amount of excess charge must be placed on each of its plates to make the potential difference between the plates equal to 25.0V?
January 26, 2016 by van

chem
The heat of combustion of methane is 213 kcal/mol. How many kcal of energy are released when 22.5 moles of CH4 burns in an excess of oxygen gas?
March 11, 2016 by banana

Chemistry
Can someone tell me what product is formed when - acetylene and oxygen react 3-methylbutyne reacts with hydrogen chloroethane reacts with hydroxide ions
June 8, 2008 by Sam

english
how would Henry David Thoreau react to abortion going on in the united states. I need help with this question. I need to write 7 pages thank you
February 4, 2009 by sam

Chem Help
If you are given a 0.27 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced?
November 16, 2009 by Anonymous

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