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July 5, 2015

Search: It takes 412 kJ/mol to break a carbon-hydrogen single bond

Number of results: 22,953

Chemistry
Explain, in terms of electronegativity, why an H-F bond is expected to be more polar than an H-I bond.
January 4, 2011 by Dee

ORGANIC CHEM I
A PROCESS THAT INVOLVES SYMMETRICAL BOND BREAKING AND BOND MAKING IS A(AN) ?
April 11, 2011 by JAM

chemistry
If you filled three balloons with eaqual volumes of hydrogen, argon, and carbon dioxide gas all at the same temperature and pressure, which ballon would weigh the most? The least?
December 13, 2011 by confused

Chemistry
Acetylene (C2H2) and hydrogen fluoride (HF) react to give difluoroethane: C2H2+2HF->C2H4F2 When 2.3 mol of C2H2 and 12 mol HF are reacted in a 15.4 L flask, what will be the pressure in the flask at 13蚓 when the reaction is complete? I know I'm supposed to find the ...
April 16, 2011 by Dewey

College Algebra
Carbon-14 Dating. Only 10% of the carbon-14 in a samll wooden bowl remains. How old is the bowl? Half life of carbon is 5700 years.
December 8, 2010 by Vince

physics
What is anionic bond?what type of substance.form ionic bond?
January 21, 2012 by keria

Finance
Is the return on 1-year t-bond risk free? Why is a 8% t-bond idependent of the state of the economy %'s?
March 14, 2010 by Anonymous

Finance
Harrison Inc. has issued a zero/ coupon bond with par value of $1000. The bond pays no coupons until the end of the 6th year, at which point it pays 10% annual coupons. What is the issue (initial) price of this bond if it has a 20 year maturity and yield to maturity of 6%?
October 7, 2013 by Kay

chemistry
why does the enthalpy of formation for the ethanol dimer have more energy than two isolated ethanol molecules? is it because there is a bond between the hydrogen of ethanol dimer
February 2, 2010 by blasting

Finance
2. You are now considering adding a corporate bond to your investment portfolio. The bond was issued last year to have 10 years to maturity (so it has 9 years remaining to maturity from today) The bond has an 8% coupon, and was sold at par ($1,000) when it was issued last year...
February 26, 2012 by rongbo

chemistry
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 of carbon were burned in the presence of 76.8 of oxygen, 12.8 of oxygen remained unreacted. What mass of carbon dioxide was produced?
September 17, 2010 by will

chemistry
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 25.2g of carbon were burned in the presence of 78.0g of oxygen, 10.8g of oxygen remained unreacted. What mass of carbon dioxide was produced?
September 7, 2011 by steph

Chemistry
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 25.2 of carbon were burned in the presence of 80.6 of oxygen, 13.4 of oxygen remained unreacted. What mass of carbon dioxide was produced?
September 24, 2012 by Hanna

Chemistry
An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound gives mass percents of 31.57% Carbon and 5.30% H. The molar mass is determined by measuring the freezing-point depression of an aqueous solution. A freezing point of -5.20 ...
February 24, 2015 by James

chemisty
find the oxidation state of a carbon in methane, carbon monoxide, carbon dioxide, CH2O, acetic acid, carbonic acid, methanol, and benzene (C6H6)
March 10, 2015 by Allison

Chemistry
What ratio is used to carry out each conversion? a.mol CH4 to grams CH4 b.L CH4(g) to mol CH4(g)(at STP) c.molecules CH4 to mol CH4 I honestly don't kno what it's asking me I got 1 mol CH4/ 16(g) CH4 for a. 1 mol/22.4 L for b. and 6.02 x 10^23 molecules/1 mol but I don't think...
July 16, 2010 by Anonymous

Chemistry
Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard free energy of formation values shown below, calculate ...
May 16, 2007 by Christian

Chemistry
A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
December 26, 2012 by Matt

Chemistry
A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
December 26, 2012 by Matt

chemistry
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + 瞌2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...
December 18, 2013 by Danny Simone

calculus
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + 瞌2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...
December 18, 2013 by Danny Simone

Organic Chemistry Q for DrBob222
Hello again, Does this look right for Hex-1-yn-4-one? O 沃 CH3 每 CH2 每 CH2 每 C 每 CH2 每 CH3 Spacing is a REALLY big problem with computers and boards of this type so I can't tell where the carbonyl group is located. First, should the yn you have be yne? Second, if the is a...
March 13, 2007 by WeatherGirl

Chemistry
When we mix NaOH and H2SO4 we get the equation OH-(aq) + H+(aq) --> H2O(l) and if we mix H2CO3 and NaOH we get the equation 2OH-(aq) + H2CO3 --> 2H2O(l) + CO3-2(aq) Why aren't the two equations the same? ie only one mol of NaOH reacts in the first equation but two mol of...
May 12, 2007 by Fiona

chemistry
Write and balance the chemical reaction when gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (CH4) & liquid water
April 18, 2010 by Tracey

Chemistry
What is a glucose molecule structure made up of? Is it: oxygen, hydroxl ions, hydrogen ions, and carbon bonds? I'm not good at this, is this even close to being right?
March 22, 2012 by Lex

Chemistry
Which of the following gases occupy the smallest volume at STP? a) 1.000 mol carbon dioxide b) 4.032 g H2 c) 35.45 g Cl2 d) 6.022 x 10^23 molecules of O2
March 20, 2012 by Renee

chemistry
What mass of carbon dioxide will be produced when 0.250 mol of propane(C3H8) reacts with 25.0 g of oxygen? Write a balanced equation first.
December 6, 2014 by Micky

chemistry
Does a double or triple bond effect the bond angle?
November 19, 2009 by jamieson

Chemistry
What factors control the bond length in a covalent bond
March 23, 2014 by Anonymous

Chemistry(Urgent, please check!!!)
The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be? My answer is k(A)(B)^2 Is this correct?
February 29, 2012 by Hannah

chemistry
Covalent bonds are formed when two atoms share electrons. The pairs of electrons which are shared between atoms and hence number of covalent bonds, can be represented by the number of lines drawn between the symbols for the atoms. For example, a single bond is represented by a...
December 30, 2008 by trigger

organic chem
Write an equation representing the oxidation of each of the following. I'm on 3-hexanol. And this is what I got -> [o] 3-hexanal and further oxidation I know you get 3-hexananoic acid. I don't know how to make this in the line formula. Can I put the -OH and the double bond ...
February 15, 2013 by meghan

Physics
A rope is attached from a truck to a 1403 kg car. The rope will break if the tension is greater than 2375 N. Neglecting friction, what is the maximum possible acceleration of the truck if the rope does not break? m/s2 If the truck can reach 30 mph within 7.5 s, should the ...
February 8, 2015 by Eva

AP Chemistry
(a) What is the pH of a 2.0 molar solution of acetic acid. Ka of acetic acid = 1.8 x 105 (b) A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium hydroxide solution. Compute the hydrogen ion concentration of ...
February 13, 2007 by Dave

Chemistry
Hydrogen H2 is used as a rocker fuel. The hydrogen is burned in oxygen to produce water vapor. 2H2 + O2 ----> 2H2O Delta H = -484 kJ What is the enthalpy change per gram of hydrogen?
October 30, 2007 by Lauren

Chemistry Need Help!
Okay, the reaction is this: Naphthalene + HNO3 ---> NitroNapthalene The limiting reagent is Naphthalene The excess is the nitric acid The equation is 1:1 balanced as far as I know 3 g of Nap used in the experiment x 1mol/128.17 g/mol = .023 mol Nap 12.69 g used in the ...
March 4, 2014 by ChrisZZ

financial health science
ABC Health Med, has a $1,000 par value bond with an 8 percent rate outstanding. The bond has 12 years remaining to it maturity date. If interest is paid semiannual interest, what is the value of the bond when the required return is 8 percent. Show all work.
December 17, 2010 by frances

chemistry/science
Not sure if i posted this but Need help with my pH calculations? 0.10 mol of solid sodium hydrogen carbonate and 0.20 mol of solid sodium carbonate are dissolved in the same beaker of water, transferred to a volumetric flask and made to 250.0 mL. The Ka for HCO3 is 4.7...
April 4, 2014 by dan

Statistics
A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. Two slots are green, 18 of the others are red, and 18 are black. a) What is the probability of winning with a bet on red in a single play of roulette? b) You decide to play roulette 4 times, each time betting on red. ...
June 7, 2015 by Luke

C++
#include <iostream.h> #include <stdlib.h> int main ( ) { int choice; cout << "Computer Repair" << endl; cout << "\n Does your ailing computer beeps multiable times at startup?" << endl; cin >> choice; switch (choice) { case Yes: cout &...
July 11, 2008 by sonnytsn

finance
Consider the following four debt securities, which are identical in every characteristic except as noted: W: A corporate bond rated AAA X: A corporate bond rate BBB Y: A corporate bond rated AAA with a shorter time to maturity than bonds W and X Z: A corporate bond rated AAA ...
April 28, 2011 by ky

math
Tony jogs 4 2/5 miles from the gym to his home daily. If he takes a water break after 2 1/4 miles,how much further does he have to jog home?
December 16, 2014 by sam

Physical Science
What do atoms forming the two bond types have in common(an ionic and covalent bond)?
May 20, 2010 by John

chemistry
By using the bond enthalpies and bond energies in thermochemical equations to calculate the reaction enthalpy of; H + Br=2HBr
July 10, 2011 by Gift

Finance
a company is offering the US Government's 8.5% 2020 treasury bond for "150.266" . What is the price in dollars of the bond?
June 28, 2012 by Kiki

chemistry
the N-N bond energy is difficult to measure. . determine the maximum de broglie wavelength of electron breaking the N-N bond
June 2, 2013 by himani.

CHEMISTRY
GIVE THE BOND ORDER FOR EACH BOND IN THE FOLLOWING MOLECULES OR IONS: CH2O,SO32-,NO2+,NOC1
December 1, 2013 by adriane

finance
If interest rates increase after a bond issue, what will happen to the bonds price and yield-to-maturity
October 13, 2014 by Anonymous

accounting
a 10 year coupon bond that yield 5% is issued with a 1000 par value. what is the issuance price of the bond
November 13, 2014 by james

Chemistry
What is the molarity of a solution prepared by diluting 25.0 mL of 0.412 M magnesium nitrate to a volume of 1.50 L please help!
November 30, 2012 by Ashley

Math
Rewrite the number sentence with parentheses to make it correct.412=70x5+1-8. And 6x10-5=55
January 8, 2013 by Zacko

Chemistry
What energy in kJ is required to break 4.24 mol of NH3 into atoms? As noted below, this information can be used to calculate ΔH for gas-phase reactions. I got 1376.18, which is wrong. All help is appreciated!
November 11, 2012 by Anonymous

Science
Which of the following compounds in the liquid phase can be considered an electrolyte? a) CO 2 (carbon dioxide) b) CuO (oxidized copper) c) H2O ( distilled water) d) H2O2 ( Hydrogen peroxide) e) NaCI (sodium chloride)
April 30, 2008 by Annie

science(chem)
I was told before that it takes 2 mol of fluorene to be reduced by 1mol of sodium borohydride.... How many mg of fluorenone can 0.53 mol of sodium borohydride(NaBH4) reduce? what I got... 0.53mol NaBH4 ( 2mol fluorenone/ 1mol NaBH4)(180.192g/1mol fluorenone)(1000mg/1g)= 19,...
October 8, 2007 by ~christina~

math
An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
March 17, 2013 by buffy

math
An artifact was found and tested for its carbon-14 content. If 79% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
June 6, 2013 by ro

Algebra
An artifact was found and tested for its carbon-14 content. If 74% of the orginal carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half life of 5730 years).
May 5, 2014 by Kim Johnson

Alegbra
An artifact was found and tested for its carbon-14 content. If 75% of the original carbon-14 was still present what is its probable age to the nearest 100 years?. carbon -14 has a half-life of 5,730 years.
May 10, 2014 by Mary Ann

alegbra
An artifact was found and tested for its carbon-14 content. If 75% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.) thank you
May 11, 2014 by gary

Algebra
An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
March 23, 2015 by Anonymous

Physics
The zeppelin Hindenburg exploded on May 6, 1937, in Lakehurst, New Jersey. The accident was due to this type of dirigible using hydrogen (density of H2, M = 2g/mol) as a gas. It carried up to 70 passengers and crew. Estimate how many passengers and crew the Hindenburg could ...
November 22, 2009 by Nikita

Physics
The zeppelin Hindenburg exploded on May 6, 1937, in Lakehurst, New Jersey. The accident was due to this type of dirigible using hydrogen (density of H2, M = 2g/mol) as a gas. It carried up to 70 passengers and crew. Estimate how many passengers and crew the Hindenburg could ...
November 24, 2009 by Nikita

Chemistry
Calculate the molar entropy of vaporization for liquid hydrogen iodide at its boiling point -34.55 degrees celcius. HI(l) <=> HI(g) deltaHvap = 19.76 kJ/mol
May 30, 2011 by Amy

Chemistry
What is the hydrogen ion concentration, in mol dm−3, when 2.00 g of sulfuric acid is dissolved in water to give 0.400 dm3 of solution?
May 16, 2013 by Ez

chemistry
1.which of the following is the most polar bond? explain n-f c-f h-f o-f 2. in the trigonal bipyramidal geometry, which position - axial or equatorial - do nonbonding electrons prefer? why? 3.under what circumstances is the molecular geometry around a single central atom the ...
April 23, 2010 by katherine

Stoichiometry Test
4.A compund is found to have(by mass)48.38% carbon,8.12% hydrogen and the rest oxygen.(What % is missing to make the sum 100 %?) That is,figure % oxygen.What is its empirical formula?
February 12, 2009 by Cool Dom

chemistry
Upon combustion, 4.30 grams sample of a compound containing only carbon, hydrogen, and oxygen produced 8.59 g of CO2 and 3.52g of H2o. what is empirical formula of the compound ?
February 25, 2015 by Ayesha

chemistry
When 3.2 g of ammonium chloride is dissolved in 75 g of water, the temperature of the solution decreases from 22.8蚓 to 20.1蚓. What is the energy of dissolution of NH4Cl per mole? (The molecular mass of NH4Cl = 53.49 g/mol, and the specific heat of water = 4.18 J/g蚓.) A. 14....
December 11, 2014 by Morgan

CHEMISTRY
Are double and triple bonds between carbon atoms more reactive or less reactive than single bonds?
March 20, 2009 by Sara

chemistry
2Na3PO4 + 3CaCl2 ----> Ca3 (PO4)2 + 6NaCl how many moles of CaCl2 remain if .10 mol Na3PO4 and .40 mol CaCl2 are used? When amounts of both materials are listed one must worry about which is the limiting reagentalthough the problem seems to suggest that Na3PO4 is the ...
June 21, 2006 by Hawk

Chemistry
PartA: What volume of 10.0M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? TrisHCl is a weak base and the molecular weight is 157.67 g/mol. I found the solution, it is 6.67 milliliters. The main question is:Part B: "The buffer from Part A is ...
March 1, 2009 by Raj

Chemistry
Can someone explain the molecular orbital theory and how to find the bond strength, bond length, and bond order? I'm also confused about the geometry of molecules & ions, like how to find the angles? (Like NH3 is 107 degrees, and H20 is 104.5 degrees, how do I find this when I...
December 18, 2006 by Raine

Chemistry
Hydrogen H2, is used asa rocker fuel. The hydrogen is burned in oxygen to produce water vapor. 2H2 + O2 ----> 2H2O Delta H= -484 kJ What is the enthalpy change per gram of hydrogen.
October 29, 2007 by Lauren

chemistry
Consider the following reaction at 298 K: C(graphite) +2Cl2 (g) -----> CCl4(l) Calculate the following quantities. Delta H: -139 kJ/mol deltaS(sys)=? J/mol*K deltaS(surr)=? J/mol*K deltaS(univ)=? J/mol*K My answer is: deltaS(sys)=654.9J/mol*K deltaS(surr)=0.4664 J/mol*K ...
March 14, 2012 by Kelsey

Check a chemistry answer
So I think I have done this problem right, I was just wondering if anyone would check over it for me. What mass (in grams) of P2O5 contains 1.20 x 1023 atoms of phosphorus? 1.20E23 atoms of P x (1 mol/ 6.022E23 atoms) x (5 mol O/ 2 mol P) x (1 mol P2O5/ 5 mol O) x (79.995g/ 1 ...
October 14, 2010 by Tim

math
Tony jogs 4 2/5 miles from the gym to his home daily. If he takes a water break after 2 1/4 miles, how much father died he have to jog home?
December 16, 2014 by sam

biology
Choose the total number of each item requested below. 4C6H12O6 Carbon atoms Hydrogen atoms Oxygen atoms Molecules
October 29, 2012 by Anonymous

Math
An artifact was found and tested for its carbon-14 content. If 88% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years. ? yr
July 15, 2011 by Lee Ann

math
An artifact was found and tested for its carbon-14 content. If 88% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
July 17, 2011 by Anonymous

Algebra
An artifact was found and tested for its carbon-14 content. If 77% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
July 23, 2011 by Brandi

algebra
An artifact was found and tested for its carbon-14 content. If 79% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
July 27, 2011 by can some please help me with this one

math
An artifact was found and tested for its carbon-14 content. If 81% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years. yr
October 20, 2011 by Anonymous

algebra
An artifact was found and tested for its carbon-14 content. If 84% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
October 30, 2011 by suzie

math
An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
January 22, 2012 by Anonymous

algebra
An artifact was found and tested for its carbon-14 content. If 84% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
February 18, 2012 by Anonymous

math
An artifact was found and tested for its carbon-14 content. If 83% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
November 3, 2012 by Anonymous

math
An artifact was found and tested for its carbon-14 content. If 83% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
November 3, 2012 by Anonymous

Can some guide me
An artifact was found and tested for its carbon-14 content. If 71% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
May 13, 2014 by Nellie

Finance
A bond has a 10% coupon rate, a par value of $1,000 and a market price of $800. What is the current yield of this bond?
January 23, 2011 by tammy

Chemistry
Carbon tetrachloride has an enthalpy of vaporization of 29.82kj/mol. If CCl4 has a normal boiling point of 350k, what is its vapor pressure at 273k? (R=8.31 J/molK)
July 1, 2013 by Annie

Volatility
Question: A mixture of p-nitrophenol and o-nitrophenol can be separated by steam distillation. The o-nitrophenol is steam volatile, and the para iosmer is not volatile. Explain. Base your answer on the ability of the isomers to form hydrogen bonds internally. My answer: ...
November 22, 2006 by Sheryl

Chemistry-Help Dr. Bob
How many mL of Carbon Dioxide gas at STP are produced from the decomposition of 4.50g of Ferric Carbonate? This is How I tried to solve it..... 4.50g Fe12(CO3)3* 1 molFe2(CO3)3/291.72g Fe2(CO3)3* 3 mol CO2/1 mol Fe2(CO3)3* 22.4L CO2/1mol CO2* 1000ml of CO2/1 L of CO2 = 1036.57...
October 25, 2014 by Loretta

chemistry
I need to write an equation tht takes place at a temp of 400 K and with a catalyst of iron to make ammonia gas from gaseous nitrogen and hydrogen
May 21, 2011 by sheila

Science
An iodoalkane A, with a molecular mass of 198, contains 30.3% carbon and 5.6% hydrogen by mass. It reacts with aqueous sodium hydroxide solution to give an alcohol which can be oxidised and with ethanolic potassium hydroxide solution to give two alkenes, neither of which show ...
April 19, 2015 by Fasi

chemistry
When the length of a chemical bond is short A. an electron is held tighter and the bond is weaker. B. an electron is held loosely and the bond is weaker. C. an electron is held tighter and the bond is stronger. D. an electron is held loosely and the bond is stronger.
February 17, 2012 by Anonymous

Chemistry
Help please! I need to identify an organic compound and tell the functional group of the molecule- the compound is single-bonded ,it is composed of a middle chain H,C,C,H. Off both carbons are single chains consisting of a H above and below each of the carbon. What ...
May 3, 2010 by Julia

Chemistry
The combustion of carbon monoxide is represented by the equation below: CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value of the standard enthalpy change, for the combustion of CO at 298 K using the following info. C (s) + 1/2 O2(g) ----> CO (g) delta H at 298K = -...
October 9, 2007 by Nick

Chemistry - Science (Dr. Bob222)
Hydrazine is used as a rocket fuel because its reaction with oxygen is extremely exothermic: N2H4(liquid) + O2(g)  N2(g) + 2H2O(liquid) ΔH(reaction) = -615 kJ mol-1 What is the enthalpy of this reaction if water were produced in the gaseous rather than the liquid ...
May 8, 2014 by Ana

chem
Can someone help me with these please? 1) Use water as an example to contrast the properties of a compound with the elements from which it is composed. 2) If you tried to breath carbon dioxide, you would suffocate. Why, then, is carbon dioxide essential to all life on Earth? ...
January 11, 2007 by June

chemistry
1- A compound is 87.5% nitrogen and 12.5% hydrogen. The molecular weight of the compound is 32 g/mol. Describe the molecule referencing shape, and inter-molecular forces. 2- Gaseous butadiene, C4H6 , reacts with hydrogen gas in the presence of a platinum catalyst to form ...
January 6, 2014 by Katie

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