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12. How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7 g Fe?

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Chemistry
Calculate how many moles of products(s) would be produced if 0.500 mole of the first reactant were to react completely. BaCl2 + 2AgNO3 --> 2AgCl +Ba(NO3)2

chemistry
What volume of 0.402MK3PO4 is required to react with 43 mL of 0.507 M MgCl2 according to the equation 2K3PO4 + 3MgCl2 ! Mg3(PO4)2 + 6KCl Answer in units of mL

CHEM! (SCIENCE) NEED HELP
Balance the equation; ___Mg+__HCI->__MgCI2+__H2 How many moles of hydrogen gas are produced when 3.0 molesbof magnesium react?

Chemistry
For the reaction 4FeCl2(aq) + 3O2(g) → 2Fe2O3(s) + 4Cl2(g), what volume of a 0.650 M solution of FeCl2 is required to react completely with 8.58 × 1021 molecules of O2?

Physics Classical Mechanics
A uniform stick of mass m and length l is suspended horizontally with end B at the edge of a table as shown in the diagram, and the other end A is originally held by hand. The hand at A is suddenly released. At the instant immediately after the release: (a) What is the ...

math
how can i make the content equal the same %? what did i do wrong? Dinner: Chicken role protein Fat content = 2.5 grams 1 gram contains fat of 9 calories 2 grams contain fat of 9 x 2.5 = 22.5 calories Total quantity = 400 calories Fat content = (22.5/400) x 100 = 5.625% Protein...

PHYSICS(HELP)
A uniform stick of mass m and length l is suspended horizontally with end B at the edge of a table as shown in the diagram, and the other end A is originally held by hand. The hand at A is suddenly released. At the instant immediately after the release: (a) What is the ...

4th grade math
thirty six buses would be needed to carry the passengers and crew off three 747 jumbo gets. heres the question: how many buses fo one jet two jets. and how many jets for 180 buses and 252 buses and how many jets would be needed to carry the passengers on 264 buses

chemistry
An aqueous solution containing bromothymol blue is used to identify the chemical properties of thionyl chloride gas. When the gas is bubbled through the bromothymol blue solution color changes from blue to yellow we could say that the gas ____________________. Question 4 ...

Chem
The heat of vaporization of ammonia is 23.4 kj/moles. How much heat is required to vaporize 1.00kg of ammonia? How many grams of water at 0 degree celcius could be frozen to ice at 0 degree celcius by evaporation of this Amount of ammonia? I got the kj by doing the layout 1,...

Algebra
One alloy of brass is 70% copper and 30% zinc. Another alloy of brass is 40% copper and 60% zinc. How many grams of each of these alloys need to be melted and combined to obtain 300 grams of a brass alloy that is 60% copper and 40% zinc

College Physics
In ordinary laboratory circuits, charges uC (microcoulomb) and nC (nanocoulomb) range are common. How many excess electrons must you add to an object to give it a charge of (a) -2.50 uC (b) -2.50 nC.

chemistry
Calcium oxalate dihydrate is CaC2O4 2H20. Write the equation for the reaction which will occur when this hydrate is heated to a temperature slightly in excess of 100 degrees C.

science
The combustion of acetylene in the presence of excess oxygen yields carbon dioxide and water: 2C2H2 (g) + 5O2 (g) ¨ 4CO2 (g) + 2H2O (l) The value of ƒ¢So for this reaction is __________ J/K.

Physic II
Why would you expect a plate to hold more excess charge on each of its conducting surfaces when the voltage difference between the two pieces of conductor increases?

Physic II
Why would you expect a plate to hold more excess charge on each of its conducting surfaces when the voltage difference between the two pieces of conductor increases?

chemistry
Calculate the theoretical volume of gas you would expect to be evolved from your experiment if X moles of magnesium were reacted with an excess of HCl at standard conditions (STP).

Chem
An excess of Al and 7.9 mole of Br2 are reacted according to the equation 2Al+ 3Br2 equals 2AlBr3. How many moles of AlBr3 will be formed assuming 100% is yield?

chemistry
How much work is done when 2.0 liters of CH4(g) undergoes combustion in excess oxygen at 0 degrees Celsius and 1.00 bar (assuming the volume of water formed is negligible)?

Chemistry
Calculate the mass of water formed by the complete reaction of 572 g of propane (C3H8) with excess oxygen. (Write a balanced equation.) Answer in units of g.

Chem hwk
How many grams of solute are required to make a 504 mL solution of copper (I) nitrate with a concentration of 1.3317 M? I go 238.6 g but my friend said I'm way off When 84.2730 grams of solute are used to make a 504 mL solution of copper (I) nitrate, what is the concentration ...

Chemistry
When determining the pH of a solution, will the indicator react with and change the properties of the solution. No, not significantly.

Chemistry-please help
Can calcium react with chlorine gas to give calcium chloride?

chemistry
how many moles of chlorine gas react with 0.100 moles of Fe (metallic iron)?

chem
what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst.

science
what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst

chemistry
how many moles of oxygen gas are required to react with 4.0 moles of Mg? 2 Mg (s) + O2(g) → 2 MgO (s)

s
he a 1.00 m sol'n of nitric acid. how many ml of this sol'n will he need to add to the soil to completely react with 56.8 g of al(oh)3

chemistry
Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemt at a solution: m = dv = 64.6 g of air moles silver =28.35/108=0.26 moles of ...

Chem II
What mass of PbI2 can be formed from 75.0 mL of 0.65 M NaI by adding excess Pb(NO3)2? Pb(NO3)2 + 2NaI ---> PbI + 2NaNO3

Chemistry, Urgent!
How is this question solved?! When 21.6g of a metal X are burned in excess oxygen, 40.8g of X2O3 are formed. From this data, what is the metal X?

Chemistry
If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below. SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g) ÄHrxn=?kJ

Chemistry
If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below. SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g) ÄHrxn = ?kJ

grade 12 chemistry
what amount of magnesium chloride will be produced when 250 ml of 8.0 mol/Hcl reacts with excess magnesium

chemistry
How many g NO gas can be produced from 120 mL of 2.80 M HNO3 and excess Cu? 3Cu(s) + 8HNO3(aq) ---> 3Cu (NO3)2(aq) + 4H2O(l) + 2NO(g)

chemistry
Hydrochloric acid (68.0 mL of 0.037 M) is added to 249.0 mL of 0.062 M Ba(OH)2 solution. What excess ions are left in the solution?

cemistry
when 2.13 moles of C3H8 burn in excess oxygen, how many moles of CO2 will be formed? Assume this is a complete combustion

CHEMISRTY
How many liters of H2O will form when excess O2 reacts with 100 liters of H2 according to the gas phase reaction:

Chemistry
the reaction of 6.62g of carbon with excess oxygen yields 13.40g of CO2. what is the percent yield of this reaction

Chemisty
An excess of aqueous AgNO3 reacts with 43 mL of 5 M K2CrO4(aq)to form a precipitate. what is it? What mass of precipitate is formed? answer in g

chemistry
calculate the mass of sodium chloride produced when 5.50 moles of sodium reacts in excess chlorine gas.

chemistry
find mass of calcium carbonate obtaqined in reaction of 10.0g of calcium oxide with an excess of carbon dioxide

chemistry
A mixture of carbon and sulfur has a mass of 9.0 g. Complete combustion with excess O2 gives 29.7 g of a mixture of CO2 and SO2.

chemistry
Mg+2Hcl---mgcl2+h2 volume of h2=40ml Hcl is 6M what mass os h is obtained by addin excess hcl to 6m of magnesium

chemistry
Why does it take longer for strong acids to react than weak acids?

chemistry
How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?

chemistry
How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?

Chemistry
How many moles of H2SO4 are required to react with 50 mL of NaOH solution? NaOH is 1M.

chemistry
how many moles of no2 remain when 2.5 moles of n205 completely react

chemistry
how many moles of co2 produced when 3 moles of hcl react with caco3

chemistry
Nitrogen gas can be prepared by passing gaseous ammonia over solid copper (II) oxide at high temperature. The other products of the reaction are solid copper and water vapor. If a sample containing 20.3 g of NH3 is reacted with 95.8 g of copper oxide 1. Which is the liming ...

Chemistry
You have 100 mL of a 0.450 M sulfuric acid solution, but you now need to add NaOH to make the solution basic. How much NaOH ( in grams) will you need to add to make the solution have a pH of 13.0? The units are grams of NaOH.

accounting
I just have a small question about how to calculate the shares of common stocks, no par having the information below, thanks. The following stockholders' equity accounts arranged alphabetically are in the ledger of Tyner Corporation at December 31, 2010. Common Stock ($5 ...

Biology
What enzyme does yeast produce?

Biological psychology
What does mitosis produce and how?

math
what must be added to 6 3/5 to produce 3 5/6?

biology
3 factors the could produce rats

chemistry
how can we produce ethane from methane?

Chemistry
If I react CuSO4 (solid) with aqueous NaOH, I will get Cu(OH)2 solid. How do I write the ionic equation?

history
How did Americans and Indians react to the Sand creek massacre and the Wounded Knee Massacre?

chemistry
when atoms collide, what determines whether they will react by transfering electrons or by sharing electrons

chemistry
how many liters of oxygen are required to react completely with 12.5 liters of hydrogen sulfide at stp?

Chemistry
The number of moles of KMnO4 required to react with 5 moles of H2O2 in acidic medium is ?

Astronomy
If some external force were able to compress the sun, how would the sun react and why?

Chemistry
If 4.5 moles of elemental carbon react, what volume of carbon dioxide will be produced at STP?

Chemistry
How many moles of water vapor react to yield 546.234 moles of hydrogen?

Chemistry
1.) It took Beethoven (the composer, not the dog from that movie) 4.5 years to compose the Ninth Symphony (this may not be true, I made it up). How many decades did it take him? 3.) Michael bought a pumpkin that had a mass of 18,165 grams. What was the mass of the pumpkin in ...

Chemistry
"Calculate the enthalpy of vaporization of water given that, when 5.00 grams of steam (gaseous H2O) at 100°C was introduced into a beaker containing 500 grams of water at 20.0°C, the temperature rose to 26.2°C." q_H2O(l) + q_H2O(g)= E nΔH_vap + m_gasCΔT + m_H2O(l)...

Statistics-- help needed despertaly!!!!!!
McMaster University researchers Margo Wilson and Martin Daly showed 209 male and female students pictures of attractive and not-so-attractive people of the opposite sex. Each was then offered a chance to win a prize. They could accept a check for between $15 and $35 tomorrow ...

Chemistry
Calculate soln pH if 100 mL 0.10 M Na2S is mixed with 200 mL 0.050 M HCl. The hint is consider Kb for HS^-. The answer is pH=9.74. Can someone walk me through the neccessary steps to get this answer? What are the k1 and k2 values for H2S in your text? Sorry I'm just now ...

Math
Solve the puzzle =RIGHT(LEFT($B$2,84),1) =RIGHT(LEFT($B$2,17),1) =RIGHT(LEFT($B$2,138),1) =RIGHT(LEFT($B$2,2),1) =RIGHT(LEFT($B$2,234),1) =RIGHT(LEFT($B$2,138),1) =RIGHT(LEFT($B$2,4),1) =RIGHT(LEFT($B$2,173),1) =RIGHT(LEFT($B$2,2),1) =RIGHT(LEFT($B$2,209),1) =RIGHT(LEFT($B$2,4...

Chemistry
a volume of 50mL of a standard HCl solution is needed to neutralize 50 mL of 1x10-2 M NaOH. what volume of this HCl solution is needed to neutralize 50 mL of 1x10-2 M Ba(OH)2

Chemistry
In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 pound of oil provides 2.4*10^7 J. How many kg of oil are needed to heat 100 kg of water from 22 to 100 degrees C? How many kg of oil are needed to provide steam from 100 kg of water at 100...

physics
A 200 gram copper calorimeter contains 400 grams of water at 25 C. A metal specimen weighing 250 grams is heated to a certain temperature and the plunged into the calorimeter The final temperature of the mixture is 42C. If then specific heat of the metal specimen is 0.09 cal/(...

physics
If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a real problem on icy mountain roads). (a) Calculate the ideal speed to take a 95 m radius curve banked at 15°. m/s (b) What is the minimum ...

ecology
How would a domestic animal react in the wild? For example....goat, sheep, or cow in the wild.

chemistry
how many liters of oxygen are required to react completely with 3.6 liters of hydrogen to form water? how do i do this problem... thanks:)

IT 220
What does netiquette in computer language mean, and how could someone react to receiving a bad netiquette email.

Chemistry
What volume of 0.105 M HNO3, in milliliters, is required to react completely with 1.40 g of Ba(OH)2? 2 HNO3(aq) + Ba(OH)2(s) Ba(NO3)2(aq) + 2 H2O(l)

ethics
The medical profession: how does that industry serves society and how we react to changes in that industry's standards and practices?

ethics
The medical profession: how does that industry serves society and how we react to changes in that industry's standards and practices?

Chemistry
You react 25.0 g hydrogen gas with 30.2 g oxygen gas. Determine the mass of water that can be produced from these reactants.

chemistry
Why will a new nail react faster in copper sulfate solution than an old, rusty nail?

Chemistry
what would be the molarity of a KOH solution if 15 mL of the solution required 22.3 mL of 0.085 M HCl to react with the base? 

chemistry
if unlimited iron is available to react with 34.0g of copper (II) chloride, how many g of copper metal would be produced?

Please help!
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3. Please explain how to do this.

chemistry
For the balanced equation shown below, how many moles of O2 will REACT with 0.6614 moles of NO? 2NO+O2 --> 2NO2

Chemistry
N2(g) + O2(g) --> N2O5(g) (a) Consider the unbalanced equation above. What is the maximum mass of N2O5 that can be produced when 43.0 g of N2 and 43.5 g O2 react?

chem
carbamic acid and ammonia react to form an amide and water. What is the amide product of this reaction.

chemistry
if a total of 18.6 mol of NaHCO3, and 6.2 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?

CHEM
How many liters of O2 will react with 100 liters of H2 according to the gas phase reaction: O2 + 2H2 ------2H2O

Chemistry
How many moles of hydrochloric acid are required to react with 2.57 moles of calcium hydroxide in a neutralization reaction?

chemistry
What volume of a 0.610 M NH4I solution is required to react with 525 mL of a 0.300 M Pb(NO3)2 solution?

chemistry
what volume of 0.150M Li2Sr solution is required to completely react with 130ml of 0.150M Co(NO3)2

Chemistry
How would you write the equation to represent "Nitrogen and Oxygen react to form Nitrogen Dioxide".

writing
how might someone who listened to the play from the beginning react differently from someone who tuned in late?

chem
What volume of a 0.430 M NH4I solution is required to react with 289 mL of a 0.560 M Pb(NO3)2 solution?

STOICHIMOETRY
HOW MANY MOLES OF O2 CAN BE PRODUCED BY LETTING 12.00 MOLES OF KClO3 REACT?

chemistry
why does 2 mole NaOH react with 1 mole HCl in titration?

chemistry
How many H2O molecules are formed when 14 methanol molecules react?

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