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March 26, 2017

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Number of results: 23,208

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.
August 1, 2010 by lauren

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?
March 13, 2014 by Gulune

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?
March 22, 2014 by ggulnebe

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).
May 4, 2014 by Anonymous

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?
November 23, 2014 by Mook

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)?
February 9, 2015 by Anonymous

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.
April 9, 2015 by danny

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 ...
April 29, 2013 by Tif

Chemistry
When determining the pH of a solution, will the indicator react with and change the properties of the solution. No, not significantly.
February 14, 2007 by KHNJ

Chemistry-please help
Can calcium react with chlorine gas to give calcium chloride?
March 19, 2009 by Anne

chemistry
how many moles of chlorine gas react with 0.100 moles of Fe (metallic iron)?
November 28, 2009 by Berni

chem
what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst.
December 1, 2011 by candence

science
what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst
December 1, 2011 by candence

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)
October 21, 2014 by Aya

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
October 19, 2015 by a

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 ...
November 7, 2008 by jason

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
February 5, 2008 by Ken

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?
May 13, 2009 by Kearstyn

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
March 8, 2010 by Rach

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
March 8, 2010 by Megan

grade 12 chemistry
what amount of magnesium chloride will be produced when 250 ml of 8.0 mol/Hcl reacts with excess magnesium
May 5, 2010 by Amy

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)
May 23, 2010 by helen

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?
October 28, 2010 by Anonymous

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
October 30, 2011 by christopher

CHEMISRTY
How many liters of H2O will form when excess O2 reacts with 100 liters of H2 according to the gas phase reaction:
May 3, 2013 by KRISTY

Chemistry
the reaction of 6.62g of carbon with excess oxygen yields 13.40g of CO2. what is the percent yield of this reaction
May 18, 2013 by Kelly

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
February 9, 2014 by Anonymous

chemistry
calculate the mass of sodium chloride produced when 5.50 moles of sodium reacts in excess chlorine gas.
January 16, 2015 by Yari

chemistry
find mass of calcium carbonate obtaqined in reaction of 10.0g of calcium oxide with an excess of carbon dioxide
March 10, 2015 by Allison

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.
October 17, 2015 by Anonymous

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
March 10, 2016 by suni bohr

chemistry
Why does it take longer for strong acids to react than weak acids?
May 3, 2008 by phil

chemistry
How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?
February 17, 2010 by sara

chemistry
How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?
February 17, 2010 by sara

Chemistry
How many moles of H2SO4 are required to react with 50 mL of NaOH solution? NaOH is 1M.
June 11, 2012 by Sarah

chemistry
how many moles of no2 remain when 2.5 moles of n205 completely react
November 3, 2014 by Megan

chemistry
how many moles of co2 produced when 3 moles of hcl react with caco3
February 19, 2017 by sandeep

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 ...
November 8, 2016 by casey

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.
March 29, 2015 by Tessa Lehan

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 ...
April 15, 2010 by mayasa

Biology
What enzyme does yeast produce?
November 9, 2009 by JEFF BOMB

Biological psychology
What does mitosis produce and how?
February 26, 2011 by Maria

math
what must be added to 6 3/5 to produce 3 5/6?
November 9, 2011 by kristeen

biology
3 factors the could produce rats
October 18, 2013 by loli

chemistry
how can we produce ethane from methane?
April 6, 2016 by tasnuba

Chemistry
If I react CuSO4 (solid) with aqueous NaOH, I will get Cu(OH)2 solid. How do I write the ionic equation?
April 6, 2009 by candy

history
How did Americans and Indians react to the Sand creek massacre and the Wounded Knee Massacre?
November 9, 2010 by cierra

chemistry
when atoms collide, what determines whether they will react by transfering electrons or by sharing electrons
July 29, 2011 by ashly

chemistry
how many liters of oxygen are required to react completely with 12.5 liters of hydrogen sulfide at stp?
May 8, 2012 by Brigitte

Chemistry
The number of moles of KMnO4 required to react with 5 moles of H2O2 in acidic medium is ?
April 15, 2013 by Clandestine

Astronomy
If some external force were able to compress the sun, how would the sun react and why?
November 3, 2014 by Rose

Chemistry
If 4.5 moles of elemental carbon react, what volume of carbon dioxide will be produced at STP?
January 8, 2015 by Anon

Chemistry
How many moles of water vapor react to yield 546.234 moles of hydrogen?
November 17, 2016 by Marissa

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 ...
September 21, 2015 by Emily

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)...
September 6, 2016 by Tristan

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 ...
December 1, 2010 by Mandy

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 ...
May 23, 2007 by John Peterson

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
May 3, 2010 by Bianca

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...
February 6, 2012 by Steve

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 ...
July 21, 2014 by Shonda

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/(...
December 16, 2014 by wendell ryan

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...
November 9, 2012 by Suzanne

ecology
How would a domestic animal react in the wild? For example....goat, sheep, or cow in the wild.
May 18, 2008 by joe

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:)
June 8, 2008 by Miley

IT 220
What does netiquette in computer language mean, and how could someone react to receiving a bad netiquette email.
September 13, 2008 by Sam

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)
September 23, 2010 by Noelle

ethics
The medical profession: how does that industry serves society and how we react to changes in that industry's standards and practices?
November 30, 2010 by Anonymous

ethics
The medical profession: how does that industry serves society and how we react to changes in that industry's standards and practices?
November 30, 2010 by Anonymous

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.
December 8, 2010 by Adog

chemistry
Why will a new nail react faster in copper sulfate solution than an old, rusty nail?
February 6, 2011 by valentina

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? 
March 15, 2011 by Anonymous

chemistry
if unlimited iron is available to react with 34.0g of copper (II) chloride, how many g of copper metal would be produced?
May 14, 2011 by me

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.
September 28, 2011 by Brittany

chemistry
For the balanced equation shown below, how many moles of O2 will REACT with 0.6614 moles of NO? 2NO+O2 --> 2NO2
December 15, 2011 by SUPAMAN

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?
February 22, 2012 by Jade

chem
carbamic acid and ammonia react to form an amide and water. What is the amide product of this reaction.
April 26, 2012 by al

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?
March 20, 2013 by morgan

CHEM
How many liters of O2 will react with 100 liters of H2 according to the gas phase reaction: O2 + 2H2 ------2H2O
May 3, 2013 by MICHELLE

Chemistry
How many moles of hydrochloric acid are required to react with 2.57 moles of calcium hydroxide in a neutralization reaction?
March 24, 2014 by Anonymous

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?
June 23, 2014 by marie

chemistry
what volume of 0.150M Li2Sr solution is required to completely react with 130ml of 0.150M Co(NO3)2
October 17, 2014 by Jake

Chemistry
How would you write the equation to represent "Nitrogen and Oxygen react to form Nitrogen Dioxide".
October 4, 2015 by Elle

writing
how might someone who listened to the play from the beginning react differently from someone who tuned in late?
November 12, 2015 by Derick

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?
May 20, 2016 by mee

STOICHIMOETRY
HOW MANY MOLES OF O2 CAN BE PRODUCED BY LETTING 12.00 MOLES OF KClO3 REACT?
October 15, 2009 by MOLLY

chemistry
why does 2 mole NaOH react with 1 mole HCl in titration?
November 2, 2010 by Mary

chemistry
How many H2O molecules are formed when 14 methanol molecules react?
November 8, 2010 by Kaley

science
How mny moles of Mg would you need to react with 2.5 moles of O2?
March 9, 2011 by dee

science
how many liters of oxygen will react with 124.5 liters of propane
September 16, 2011 by david

chemistry
How many CO2 molecules are formed when 10 methanol molecules react?
December 11, 2013 by andy

Chemistry
Elements that do not chemically react with other elements are said to be???
September 7, 2015 by Alessandra

Chemistry
How many moles of hydrogen from when 10 moles of methane react completely?
November 17, 2016 by Marissa

statistics
In a study of termite populations in Swaziland, the following data were gathered on the percentage of termites that were classified as "major workers" at seven randomly selected sites:37.6 20.0 28.8 29.9 51.9 13.6 34.5 29.0 a)Use the given data to produce a point estimate of...
March 26, 2012 by tea

English
I think the answer is, because he is pretty much telling the people reform is needed. AFTER an unequivocal experience of the inefficiency of the subsisting federal government, you are called upon to deliberate on a new Constitution for the United States of America. What does ...
March 10, 2016 by Henry

Chem help?
In an experiment 5.57 +/- 0.02 grams of water chemically decomposes into the products hydrogen gas and oxygen gas. The measured mass of oxygen gas produced in the reaction is 4.9320 +/- 0.0001 grams. The hydrogen gas occupies a volume of 6902 mL. Report the density of the ...
February 7, 2008 by sool

CHEM!!
In an experiment 5.57 +/- 0.02 grams of water chemically decomposes into the products hydrogen gas and oxygen gas. The measured mass of oxygen gas produced in the reaction is 4.9320 +/- 0.0001 grams. The hydrogen gas occupies a volume of 6902 mL. Report the density of the ...
February 7, 2008 by HELP!!

chemistry
I have 3 grams of CaCI2 and dissolve this into 0.5 L water. What is the concentration in g/dl (grams/deciliter)? I take 10 milliliters of this solution and add it to 990 milliliters of watet fo a total of 1000 milliliters. What is the concentration of this new dilution in ...
September 17, 2014 by maria

Economics
Hey just needed some pointers on the following questions. True or False? Explain.. 1. As long as the firm has to pay for an input, it would be wasteful not to use all input services purchased? 2. A profit-maximising competitive firm will never produce in the region where ...
October 11, 2006 by Jason

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. attemtp at solution volume of oxygen= .209476*50L=10.5L How do i go from volume of ...
November 8, 2008 by jason

chemistry
How many moles of Ag can be produced if 350.g of Cu are reacted with excess AgNO3 according to the equation Cu(s) plus 2AgNO3(aq) plus Cu(NO3)2(aq)?
March 18, 2008 by Whittney

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