April 30, 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: 21,681

Physical Science
How many grams would occupy 12cm^3?
September 7, 2014 by Molly

grams of potassium permanganate are in 2.58 moles i dont get it ? help
December 4, 2014 by danii

How many grams of CO(g) are in 0.944 L of the gas at 2.26 atm and 257. K?
December 6, 2014 by Anonymous

find the mass in grams of 1.40x10^23 molecules of n2
January 11, 2015 by Sierra

How many grams of CO(g) are there in 67.0mL of the gas at 0.826atm and 30 ∘C?
March 20, 2015 by Brandon

the complete electrolysis of 90 grams of water will yield
April 1, 2015 by seyimichael

How many grams of rust are produced from the oxidation of 10.0 lb of iron?
September 15, 2015 by John

how many grams of chloroethylene C2H3Cl contain 5.47 x 10^26 molecules?
October 21, 2015 by Anonymous

How do I find the number of grams of .25 moles of neon?
October 25, 2015 by Anonymous

What does an averge sized dog weigh in grams?
December 2, 2015 by caidence

how many grams of propane would be burned with 80.0g of oxygen?
January 21, 2016 by Matt

How many grams of MgCl2 do you need to make 2 L of a 0.2 M solution?
February 8, 2016 by K

How many grams of nitrogen are present in 2 moles of HNO3?
March 25, 2016 by MOnica

How many hydrogen atoms are present in 32 grams of methane?
April 25, 2016 by baba

chemistry, science
Propose a method for determining the specific heat, for a metal like sodium which reacts with water What about using a liquid, not water, which doesn't react with Na. i am doin this presentation on acids and alkalis and i need help finding a site that will give me the info on ...
February 27, 2007 by tensed

Can someone check my answer please: Magnesium metal(0.100 mol)and a volume of aqueous HCL that contains 0.500 mol are combined to react to completion. how many litres of hydrogen gas (measured at STP) are produced choices: 4.42 11.1 22.7 2.27 5.53 I like 2.27... Is this right...
May 10, 2010 by Andy

Physics(work and energy)
A cannon ball is fired so that it hits the wall at the top of a 10m tower.If the energy needed to destroy the wall is 49000 F and the mass of the cannon ball is 10 k, the minimum initial velocity of the cannon ball required to break the tower wall is A 100 m/s b 200 m/s c 300 ...
May 20, 2012 by TOM

3/2/2016 An unknown substance at a temperature of 20 degrees Celsius is warmed up to 50 degrees when water at 80 degrees is added to it. The sum of the masses of the unknown substance and water is equal to 1000grams. In another experiment, the same substance at 20 degrees is ...
March 2, 2016 by Marilynn on behalf of Victor Hopman

Calcium nitrate will react with ammonium chloride at slightly elevated temperatures, as represented in the equation Ca(NO3)2(s) + 2NH4Cl(s) ---> 2N2O(g) + CaCl2(s) + 4H2O(g) What is the maximum volume of N2O at STP that could be produced using a 6.80-mol sample of each ...
June 21, 2010 by JAS

Why is energy released in order to react two atoms to form a compound? For instance the reaction between sodium metal and chlorine gas is highly exothermic and produces NaCl(s). Meanwhile when an atom loses an electron, it will be endothermic. Can someone try to explain this ...
November 4, 2012 by M

Situation 1: You have eight billiard balls. One of them is "defective," meaning that it weighs more than the others. How do you tell, using a balance, which ball is defective in two weighings? Situation 2: You have five jars of pills. All the pills in one jar only are "...
January 21, 2013 by Sarah

Chemistry: stoich
4. Suppose that an excess of propane, C3H8 , burns in 320 g of oxygen, How many moles of water will be formed? C3H8 + 5 O2 --> 3 CO2 + 4 H2O (1 point) 6.02 E 23 moles 1600 moles 4.0 moles 8.0 moles
February 16, 2016 by Hannah

(a) If you use two quarters 2.00 mm apart to make a parallel plate capacitor, what is its capacitance? Measure the necessary quantities. (b) If you connect your capacitor in part (a) across 12 V potential difference, how much excess charge will flow onto each quarter? I am ...
January 30, 2008 by J

A certain compound contains carbon, hydrogen , and oxygen. When 1.00 grams of this compound are burned in oxygen gas 1.47 grams of CO2 and 0.600 grams of water are formed. When 2.75 grams of the compound are dissolved in 10.0 grams of water the resulting solution freezes at 2...
January 17, 2011 by Patrick

what volume (in L) of 0.150 M KCl solution is required to completely react with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the following balanced chemical equation? 2KCl (aq) + Pb(NO3)2 (aq) --> PbCl2 (s) + 2 KNO3 (aq)
June 21, 2010 by samantha

using the balanced reaction equation for the combustion of propane, determine the number ofmoles of oxygen that would react with.50 mol propane and the number of moles of carbon dioxide that would be produced?
January 9, 2011 by Blake

A mixture of 1.441 g of H2 and 70.24 g of Br2 is heated in a 2.00-L vessel at 700 K. These substances react as follows. H2(g) + Br2(g) arrow 2 HBr(g) At equilibrium the vessel is found to contain 0.627 g of H2. calculate their equilibrium concentrations and Kc
January 22, 2013 by Mariah

chemistry help !!!!!!!!!!!!!!!!
H2(g)+Cl2(g)=2HCL(g) it is found experimentally that 1 mole of H2 gas react with 1 mole of CL2 gas at constant temperature & pressure , to release 184kJ of heat .what is the enthalpy change for this reaction? ∆H=
January 4, 2013 by john

In 1901, Thomas Edison invented the nickel-iron battery. The follwing reaction takes place in the battery. Fe(s) + 2 NiO(OH)(s) + 2 H2O(l) Fe(OH)2(s) + 2 Ni(OH)2(aq) How many mole of Fe(OH)2, is produced when 3.70 mol Fe and 6.95 mol NiO(OH) react?
February 24, 2014 by Grace

Silver ion reacts with excess CN− to form a colorless complex ion, Ag(CN)−2, which has a formation constant Kf=3.01020. Calculate the concentration of Ag+ in a solution prepared by mixing equal volumes of 2.310−3M AgNO3 and 0.21M NaCN.
March 27, 2014 by Emily

A 25.00 ml sample of a standard solution containing 1 g of CaCO3/L required 25.20 ml of EDTA to fully complex the Ca present. Calculate the volume of EDTA stoichiometrically equivalent to 1.0 mg of CaCO3. From the volume of EDTA required in titrating the sample, calculate the ...
March 14, 2010 by Anonymous

Given that 1mole of propane react with 5 moles of Oxygen.find the number of moles of Oxygen reacted with 2.2g of propane
October 26, 2014 by Kealeboga

Urea (NH2)2CO is dissolved in 100.0 g of water. The solution freezes at -0.085 degrees C. how many grams of urea were dissolved to make this solution. delta T = Kf*molality Plug in 0.085 for delta T, I assume you know Kf for water, calculate molality. Then molality x kg ...
February 9, 2008 by Lauren

Urea (NH2)2CO is dissolved in 100.0 g of water. The solution freezes at -0.085 degrees C. how many grams of urea were dissolved to make this solution. delta T = Kf*molality Plug in 0.085 for delta T, I assume you know Kf for water, calculate molality. Then molality x kg ...
February 9, 2008 by Lauren

A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. If the concentration of C is increased by a factor of 4.95 (and all other concentrations are held constant), how much will the rate of reaction increase?
May 2, 2011 by Ryan

The left side of a balanced chemical equation is shown below: K2Cr2O7 + 4H2SO4 + 3SeO2 If 0.600 moles of K2Cr2O7, 2.800 moles of H2SO4 and 1.500 moles of SeO2 are brought together and allowed to react, then
October 18, 2013 by Anonymous

A garment company makes two types of woolen sweaters and can produce a max of 700 sweaters per week. Each sweater of the first type requires 2 pounds of green wool and 4 pounds of pink wool to produce a single sweater. The second type of sweater requires 4 pounds of green wool...
November 24, 2008 by JAYJAY

college physics
To stretch a spring 7.00 cm from its unstretched length, 16.0 J of work must be done. What is the force constant of this spring? What magnitude force is needed to stretch the spring 7.00 cm from its unstretched length? How much work must be done to compress this spring 4.00 {\...
September 21, 2010 by jon

Statistics 1 plaese give answers to below question
Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) Describe the sampling distribution of p^ (choose the ...
November 26, 2014 by LADO

Suppose a new type of pest, which is immune to existing pesticides, attacks the wheat crop. As a result, at a given quantity of clothing, the economy is able to produce fewer bushels of wheat than before the attack of the new pests. Adjust the PPF curve to show the economy's ...
August 11, 2009 by Sammy

A food product claiming to be sugar free contains A. less than 10 grams of sugar per serving. B. less than 0.5 grams of sugar per serving. C. less than 5 milligrams of sugar per serving. D. less than 2 milligrams of sugar per serving.
October 19, 2015 by yourmom

i need help with this one! A 100KHz oscillator thats followed by a doubler and two triplers will produce an output of frequency.... a.) 180 kHz b.) 500 " c.) 800 " d.) 1.8 "
August 29, 2007 by jeff

Write a systematic method to answer, 'How quickly and how do you produce rocket fuel?' using a boling tube, acid, a balloon, and a measuring cylinder?
October 12, 2009 by Rebekah

political 100
why can't the president sit down with a group of able and intelligent advisers and produce an ffective program to address the problems facing the nation?
March 22, 2010 by kelvin

What minimum acceleration must it engines produce if the airoplane has become airbome after starting from rest and travelling a distance of 300m on the runway
February 27, 2011 by Nobuhle

Hi, I am needing help with the following question. How long would it take to produce 150 kW with 780 J of energy? (make sure you have the corerct units)
August 9, 2011 by Kelsey

If 1.000g of (potash) K2CO3 reacts with H2SO4 to produce 145 mL of CO2 gas at STP, what is percentage of Potassium Carbonate in the marble sample?
October 15, 2011 by Sarah J

Five forces act on an object. (1) 60 N at 90 (2) 40 N at 0 (3) 80 N at 270 (4) 40 N at 180 (5) 50 N at 60 What are the magnitude and direction of a sixth force that would produce equilibrium? Thanks for the help im confused on setting up the f(x) and f(y)
November 26, 2011 by Conner

If we can produce the final draft within next week, we can finalize this treaty by the end of this month. (Is this sentence grammatical? Would you correct any errors?)
October 23, 2012 by rfvv

a converging lens has a focal length of 15cm. Find two positions where a real object can produce images four times its size.
March 19, 2013 by Anonymous

a converging lens has a focal length of 15cm. Find two positions where a real object can produce images four times its size.
March 19, 2013 by Anonymous

Identify the limiting reagent. 2.43g of magnesium is added to a solution containing 0.100 mol hydrochloric acid t ok produce hydrogen gas.
April 21, 2013 by Amy

when chlorophyll runs out of electrons where does it find new ones? The light dependent reactions use energy from sunlight to produce what 3 things?
April 30, 2014 by Anonymous

Consider the chemical reaction, 2Al + 3Cl2 → 2AlCl3. Here, 56 g of Al can produce 415.14 g of AlCl3 (Molar masses: Al = 26.98 g; Cl = 35.45 g). true or false
October 4, 2014 by bekah

a main function of the skeletal system is to protect internal organs allow your body to move store and produce materials all of the above
November 13, 2014 by Anonymous

A dog breeder wanted to produce a small variety of cocker spaniel. He mated the smallest dogs from various litters for many generations. This is an example of
June 1, 2015 by alexa

what mass of hydrogen chloride gas is required to produce 250 ml of hydrochloric acid solution with a pH of 1.57 pH 1.57 H3O = 10^-1.57= .027mol/L .027(4)= .108mol/L 36.46(.108)=3.9g
April 8, 2016 by John

CH3COOH + C5H12O -> C7H14O2 + H2O If the yield for the reaction is 45%, how many grams of the product are formed when 3.58 g of acetic acid are reacted with 4.75 grams of isopentyl alcohol? Millimoles of acetic acid= 59.6667 Millimoles of isopentyl alcohol= 53.9773 How ...
November 1, 2010 by David

CH3COOH + C5H12O -> C7H14O2 + H2O If the yield for the reaction is 45%, how many grams of the product are formed when 3.58 g of acetic acid are reacted with 4.75 grams of isopentyl alcohol? Millimoles of acetic acid= 59.6667 Millimoles of isopentyl alcohol= 53.9773 How ...
November 1, 2010 by David

math $$
k ty i have 4 more *so sorry* Carson wanted to make a cylindrical pillow for his mother's b-day the pillow was to be 15 inches long with a diameter of 6 inches and would be filled with stuffing. determine how many cubic inches of stuffing carson will need to make the pillow ...
February 21, 2013 by Angie

Excess fluorine, F2(g), reacts at 150C with bromine, Br2(g), to give a compound BrFn. If 423 mL Br2(g) at 150C and 748 mmHg produced 4.20 g BrFn, what is n? Predict the shape of this molecule using the VSEPR model.
December 13, 2010 by chemistry

you are given an unknown gaseous binary compound. when 10.0g of the compound isburned in excess oxygen, 16.3g of water is produced. the compound has 1.38 times that of oxygen gas at the same conditions of temperature and pressure. give a possible identity for the compound.
December 8, 2011 by keith

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 15.0 g Sb2Sb3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this reaction?
January 25, 2012 by sammy

math Steve form your help
50gm of a mixture of ca(OH)2 is dissolved in 50ml of 0.5N hcl solution, the excess of hcl was titrated with 0.3N -naoh. The volume of naoh used was 20cc. Calculate % purity of ca(OH)2 The answer 41.35% Who helps me step by step
December 29, 2013 by Fai

Suppose that 0.205 g of a mixture containing Na2SO4 and K2SO4 is dissolved in water. An excess of BaCl2 is added and a precipitate of 0.298 g of BaSO4 is produced. Calculate the percent by mass of Na2SO4 and K2SO4 in the original mixture.
November 15, 2014 by Mahnoor

Assuming an efficiency of 46.80%, calculate the actual yield of magnesium nitrate formed from 147.9g of magnesium and excess copper(II) nitrate. Mg + Cu(NO3)2 --> Mg(NO3)2 + Cu I can't figure out how to even set this up much less solve it...
February 23, 2016 by Alexis

physical chemistry
1.) Calculate delta rH for the freezing of water at one bar and -10 degrees C. The heat capacities are H2O(s)=36.9 JK-1mol-1 and H2O(l)=74.5JK-1mol-1. delta H for freezing of water at 0 degree C is -6602Jmol-1 (assume C is independent of temperature). 2.) Assume the hot brick ...
February 21, 2012 by nicole

Mr.drwls help me to check if my answer is c0rrect,tnx anyways, what is the mass of calcium carbonate is required to react with sulfur dioxide produced by burning 1000 kgs of coal that contain 5% sulfur by mass? (0.781 kmole)(100kg/mole)=78.1 kg
April 28, 2011 by joy

Business (management)
I need help creating the constraints. Quick-Screen is a clothing manufacturing company that specializes in producing commemorative shirts immediately following major sporting events such as the World Series, Super Bowl, and Final Four. The company has been contracted to ...
September 18, 2007 by Yousef

General Chemistry
According to the following reaction, how many moles of Fe(OH)2 CAN FORM FROM 175.0 mL of 0.227 M LiOH soultion? Assume that there is an excess of FeCl2 FeCl2(aq)+ 2 LiOH(aq)-(Oh)2(s)+2LiCl(aq) I have no clue how to approach this problem? Could anyone help me? I do not know ...
December 17, 2010 by Emily

Organic Chemistry
Cu++ forms a blue-green complex with tetraphenylporphin in a 1:1 ratio. Say you have 100 mL of a 2.0 x 10^-4 solution of the Tetraphenylporphin. Exactly what weight of CuCl2 must be added to the solution to insure complete complexation without any excess cupric chloride ...
December 9, 2014 by Jessica

If someone has the time to help with the following question it would be really helpful. The problem is 209/83bi+64/28NI=272/111Rg+1/0n How to calculate the energy change in J/mol reactants? AMU amounts: Bi=208.980384 Ni= 63.927969 Rg=272.1535 What I have done is 1. subtract ...
September 25, 2014 by Nancy

SQL server help!
A SQL statement is needed to create a stored procedure, which adds a new record to the Part table of week 3. The stored proc returns an out parameter that contains the value of the PartID PK of the record just added. Input parameters are needed to pass the field values of the ...
August 8, 2011 by Anonymous

NaN3--->Na+N2 How many moles of Na are produced if 3.5 moles NaN3 react?
November 20, 2015 by Mathew

Math help plz
The human endocrine system is made up of which of the following structures? (1 point) vessels receptors glands chambers 2. Which of the following best describes the function of the endocrine system? (1 point) It secretes chemical messengers that travel through the blood to ...
May 20, 2014 by Anonymous

Thanks for everyones help. Yall gave me exatly what i needed. Thank you.
August 5, 2005 by Bryans Gurl

What are needed for humans to be able to digest?
September 20, 2007 by Olivia

how many points are needed to dtermine a line
December 9, 2007 by Ashley

Help needed! round 1.16 to the nearest tenth
July 9, 2008 by Anna

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

why is it needed to balance a chemical equation
June 18, 2008 by PULKIT

is chlorophyll needed for cellular respiratin
October 22, 2009 by Anonymous

OH,,, well i found out what i needed.. THANKS FOR YOUR HELP SO FAR!!!! :)
March 8, 2010 by josh

Can you help me with the steps needed to solve this inequality?5x-8<5+4x x=2
June 2, 2010 by Mickey

2m-1=3m what is the first step needed to solve this
June 16, 2010 by Meagan

When is an exact number needed and when is an estimate okay?
October 10, 2011 by megan

how many posts will be needed if the fence has 47 sections?
March 28, 2013 by booty

how many posts will be needed if the fence has 47 sections?
March 28, 2013 by bootycall

Why are the Civil War(13,14 and 15) amendments needed?
December 14, 2013 by Carley

How many posts will be needed if the fence has 47 sections
May 17, 2015 by Serenity

How many 2x4s needed for a room 26x12
February 13, 2016 by Anonymous

A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 7840 N/C. The mass of the water drop is 3.84 10-9 kg. (a) Is the excess charge on the water drop positive or negative?
September 3, 2009 by amber

A 50.0 g silver spoon at 20.0 degrees Celsius is placed in a cup of coffee at 90.0 degrees C. How much heat does the spoon absorb from the coffee to reach a temp. of 89.0 degrees C? Rememeber this equation. It, or a slight modification of it, will work all of these heat ...
November 21, 2006 by Erica

A 25.0cm^3 aliquot of a solution containing Fe2+ ions and Fe3+ ions was acidified and titrated against KMnO4 solution. 15.0cm^3 of 0.020M KMnO4 was needed. A second 25.0cm^3 aliquot was reduced using Zn, then titrated. This time, 19.0cm^3 of the 0.020M KMnO4 was needed. ...
March 9, 2011 by tam

Organic Chemistry
What would be the acid base reaction of: c2h30- and phenol(benzenol) C6H5OH be? Ok so this would result in the production of water, and the double bonds in phenol would open up and react, but I don't know what the end product would be??
February 11, 2010 by Natasha

I am writing a paper on environment and I wanted to know what all the environmental risks are out there. Also what type of environmental risks could one be exposed to based on their actions/ way they react and behave? (To clarify, not you environment) Thanks.
February 13, 2011 by Stefina

September 20, 2011 by sam

A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. What mass of precipitate forms in this reaction? I think I know how to do it but don't understand. Do I figure out the mass of each of the compounds? HELP please!!!
February 25, 2013 by STAT

If 10.5 g of hydrogen, H2, were mixed with 6.51 g of acetylene, C2H2, and allowed to react according to the following equation, what is the theoretical yield of ethane, C2H6, produced? If 7.00 g of ethane, C2H6, were recovered at the end of the reaction, what is the percent ...
April 26, 2013 by C.M.

Chemistry for health science
Considering the neutralization reaction when nitric acid reacts with solid iron(II)carbonate. What is the minimum volume of 2.00 M HNO3 necessary to react completely with 1.06 kg of solid iron(II) carbonate, FeCO3 ?
March 23, 2014 by Anonymous

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