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April 18, 2014

Search: chemistry-bond energies

Number of results: 102,610

chemistry-bond energies
Octane (C8H18) is the main hydrocarbon in gasoline. Using bond energies, calculate the amount of energy produced from 2.5 kilograms of octane. I know how to do bond energies, but If someone could tell me what to do with the 2.5 kg in this case and possibly tell me what answer ...
Sunday, October 10, 2010 at 12:58pm by kelsy

chemistry 104
All of these are gases; I would use bond energies. dHrxn = (n*BE reactants) - (n*BE products) You should have a table in your book with bond energies.
Friday, November 16, 2012 at 11:47pm by DrBob222

Chemistry
A quick question. When we use the bond energies to find delta H, should we use the sum of the bond energies of the reactants minus the sum of the bond energies of the products, or vice versa? For example, H2 + Br2 --> 2HBr Given that H-H bond is 436 KJ/mol Br-Br is 193 KJ/ ...
Sunday, October 31, 2010 at 12:26am by Steven B.

Chemistry
The sum of bond energies reactants - sum bond energies products.
Sunday, October 31, 2010 at 12:26am by DrBob222

Chemistry
(sum bond energies reactants)-(sum bond energies products)
Sunday, December 5, 2010 at 4:25pm by DrBob222

Chemistry (bond energies)
The bond energy of atoms usually is spoken of in terms of average bond energy becuase the bond energy of C=O in a hydrocarbon type molecule is influenced by what is around it. For example, in the R-COOH carboxylic acid, we draw it as O=C-R    |    O   ...
Thursday, November 27, 2008 at 8:34pm by DrBob222

Chemistry
What were your answers for these ones? Determine the minimum potential that must be applied to a proton so that, on interaction with a hydrogen atom, it can excite the ground state electron to a state of n=5 Electron exhibiting a particle wavelength of 5.84 x 10-9 are emitted ...
Sunday, October 13, 2013 at 1:07am by edxboy

Chemistry
Why is the Ge-F bond energy so much more than the Ge-Cl bond energy? 1. Covalent bond energies generally increase as you go down the periodic table 2. Covalent bond energies generally decrease as you go down the periodic table 3. The Ge-F bond is more polarizable than the Ge-...
Sunday, October 13, 2013 at 2:21am by ss01

Chemistry (bond energies)
Why is it possible to have an accurate value of the energy of a hydrogen-hydrogen bond, but not of a carbon-oxygen bond? I know carbon and oxygen can form both double and single bonds, and hydrogen can only form single bonds. But apparently C=O has two different bond energies...
Thursday, November 27, 2008 at 8:34pm by Lucy X

chemistry
9. using bond energies, estimate the change in Hr for the following reaction. 2NO + O2--->2NO2 A 1624 kJ B -247kJ C 661 kJ D 54kJ 10. using bond energies estimate the change Hr for the follwing reaction C + 1/2O2 +1/2 N--->O=C=N a -611kJ b 109kJ c 2770kJ d -1090 kJ Don't...
Tuesday, January 9, 2007 at 3:40pm by NATIE

chemistry
By using the bond enthalpies and bond energies in thermochemical equations to calculate the reaction enthalpy of; H + Br=2HBr
Sunday, July 10, 2011 at 3:29am by Gift

Chemistry
Why do the bond energies decrease in the order Ge-Cl, Ge-Br, Ge-I? 1. Covalent bond energies generally increase as you go down the periodic table 2. Covalent bond energies generally decrease as you go down the periodic table 3.Ionic bond energies generally decrease as you go ...
Sunday, October 13, 2013 at 2:22am by ss01

Chemistry
Explain why the calculated value for the (1) enthalpy of combustion for propane using bond energies (bond breaking and bond formation)might not be in close agreement to the values calculated using (2) Hess Law and the values calculated using the (3) summation of the change in ...
Monday, November 1, 2010 at 11:40am by Leah

Chemistry
OF2(g) + H2O(g) -> O2(g) +2HF(g) ΔHrxn = -318 kJ Using bond energies, calculate the bond dissociation energy of the O-F bond, in OF2. This is the question and I got 438 as the answer, which is wrong. I don't know what I did wrong??
Sunday, May 1, 2011 at 4:50pm by Kat

Chemistry
OF2(g) + H2O(g) -> O2(g) +2HF(g) ΔHrxn = -318 kJ Using bond energies, calculate the bond dissociation energy of the O-F bond, in OF2. This is the question and I got 438 as the answer, which is wrong. I don't know what I did wrong??
Sunday, May 1, 2011 at 5:08pm by Kat

chemistry
Use the bond enthalpies and bond energies in the data book in themochemical equations to calculate the reaction enthalpy of: H2(g) +Br2(g) -> 2HBr(g)
Monday, July 11, 2011 at 1:43am by Gift

Chemistry
Calculate the maximum wavelength of electromagnetic radiation capable of breaking the C-N bond in lysine. DATA: Average Bond Energies (kJ/mol) N-N 160 C-C 350 Express your answer in meters.
Friday, January 11, 2013 at 10:25am by selly

science
1.The energy associated with the absorption of a photn of wavelength 4.26 micrometers is ______________? 2.The bond energy associated with the bond between the Nitrogen atom and Bromine atom is______________________? 1. See other post on plancks equation. 2. This question begs...
Monday, August 1, 2005 at 1:43pm by Tahira

Chemistry
Use the bond enthalpies and bond energies from the data book in themochemical equations to calculate the reaction enthalpy of:H2(g) + Br2(g) ->2HBr(g) and show your workings in the question above in an energy level diagram.please..
Tuesday, July 12, 2011 at 3:09am by Gift

AP Chem
It appears to me that we must break 4 OH bonds for the two moles H2O and form 2 H-H bonds and 2 O-O bonds. The difference between (sum bond energies reactants)-(sum bond energies products) = delta H rxn for 2 moles H2O and 2 moles H2. Therefore, divide that number by 2. Check ...
Monday, November 15, 2010 at 11:27am by DrBob222

Chemistry
Bond energy is the energy required to make or break a bond between two atoms. That is the energy required when the molecule is a gas. As a liquid, you must add additional energy to vaporize it before breaking the bond; as a solid you must add additional energy to melt it then ...
Monday, January 9, 2012 at 5:46am by DrBob222

chemistry
For the new compound ICl2F+2: Calculate the maximum wavelength of electromagnetic radiation that is capable of breaking the weakest bond. Express your answer in meters. Bond energies (kJ/mol) are: I-I (150) F-F (160) Cl-Cl (240) unanswered
Saturday, November 17, 2012 at 8:31am by amar chauhan

Chemistry
http://antoine.frostburg.edu/chem/senese/101/thermo/faq/enthalpy-from-bond-energies.shtml
Sunday, January 22, 2012 at 10:53pm by DrBob222

chemistry
Determine the heat of combustion of ethanol by using the bond energies
Thursday, April 26, 2012 at 11:57pm by david drame

Chemistry
Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction given below. 2ClF3(g) + 2O2(g) Cl2O(g) + 3OF2(g) I did this: 1530 + 996 - (410 + 570) = 1546. But the answer was wrong. I dont know where I did wrong. ...
Tuesday, November 2, 2010 at 6:21pm by Melissa

CHemistry
Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction given below. 2ClF3(g) + 2O2(g) Cl2O(g) + 3OF2(g) I did this: 1530 + 996 - (410 + 570) = 1546. But the answer was wrong. I dont know where I did wrong. ...
Tuesday, November 2, 2010 at 7:46pm by Melissa

chemistry
(a) Bonds on the left side break by absorbing (+) energy and bonds on the right side form releasing (-) energy. Look up the bond energies and set up: ∆Hrxn = E(H-H) + E(C=C) + 4E(C-H) - E(C-C) - 6(C-H). Look up and combine six positive energies on the left with seven ...
Monday, October 27, 2008 at 11:24pm by GK

Chemistry
Use average bond energies to calculate delta Hrxn for C(s)+2H2O(g)-->2H2(g)+CO2(g)
Sunday, December 5, 2010 at 4:25pm by Kate

chemistry
in a 300-500 word essay distinguish between an ionic bond, a covalent bond, hydrogen bond, a single bond, a double bond, and a triple bond. Explain the behavior of the electrons in each type of bond. Give examples of compounds that result from both ionic and covalent bonds.
Thursday, May 13, 2010 at 2:31pm by GKMB

science
ICl2F+2: Calculate the maximum wavelength of electromagnetic radiation that is capable of breaking the weakest bond. Express your answer in meters. Bond energies (kJ/mol) are: I-I (150) F-F (160) Cl-Cl (240)
Friday, November 16, 2012 at 8:23am by lef

thermochemistry
what is the enthalpy change in kilojoules for the combustion of 1 mol of ethanol, C2H5OH (l), to form gaseous carbon dioxide and gaseous water? use bond energies to calculate your answer. (hint: there is a double bond in carbon dioxide and oxygen) the answer is supposed to be...
Tuesday, January 23, 2007 at 3:17pm by Sienna

Organic Chemistry
Determine bond length and bond strength? The picture of the problem is shown here: oi52[insert dot]tinypic[insert dot]com/jfgnb6[insert dot]jpg I got the following: I think that the strongest bond is the triple bond (A). I think that the shortest bond is also the triple bond (...
Sunday, October 3, 2010 at 5:16pm by Lauren

Chemistry
Calculate ∆H˚ for the following reaction using the given bond dissociation energies. CH4 (g) + 2O2 (g) --> CO2 (g) + 2H2O (g) Bond.......∆H˚ (kJ/mol) O-O........142 H-O.........459 C-H.........411 C=O........799 O=O........498 C-O.........358 ∆H...
Wednesday, November 9, 2011 at 3:09am by Raj

chemistry
Are bond energies (single and multiple bonds) applicable only to gas phase?? For instance, I can use the bond energy data to calculate for enthalpy of reaction for the formation of water: 2 H2(g) + O2(g) -> H2O(g) But I can't directly use it to calculate for neutralization ...
Wednesday, September 19, 2012 at 5:04am by Namie

chemistry
Use bond energies (Table below) to estimate H (kJ) for the following gas-phase reaction: (CH3)2CHOH(g) ==> (CH3)2C=O(g) + H2(g)
Thursday, April 12, 2012 at 9:30pm by Valerie

chemistry
2H2 + O2 yield 2H2O to calculate bond enthalpy, we have to take bond breaking minus bond making, how do we know which one is bond breaking and bond making
Friday, March 12, 2010 at 9:59pm by bme1

chemistry-bond energies
You calculate the energy per mole octane from the balanced equation, then multiply that energy x (2,500g/molar mass octane) = ??
Sunday, October 10, 2010 at 12:58pm by DrBob222

Chemistry
The O-O bond in the O2 gaseous molecule is stronger than a single bond but less than a double bond; therefore, it is a little shorter than the single bond.
Friday, October 7, 2011 at 5:45pm by DrBob222

chemistry
A pair of electrons shared by two atoms form a what? a-metallic bond b-double covalent bond c-single covalent bond d-an ionic bond
Friday, July 23, 2010 at 12:31am by Mary

chemistry
The C-C bond distance in benzene is shorter than a C-C bond length in alkanes but longer than the C-C bond length in alkenes suggesting that the C-C bond in benzene is between a single bond and a double bond. Also, all of the bonds in benzene inside the ring are equal ...
Wednesday, February 4, 2009 at 11:29pm by DrBob222

chemistry
for SCN- if S-C has a bond order of 1, S=C and C=N have bond orders of 2, and C triple bond N hasa bond order of 3, ... Do the bond length in SCN- point to one resonance structure over the other? Which one?
Wednesday, June 30, 2010 at 7:28pm by Jin

chem
Use bond energies to estimate the enthalpy change for the following reaction C2H2 + H2-> C2H4 i figured the bonds broken are: 1 C triple bond C 1(812kj/mol) 2 C-H 2(414kj/mol) 1 H-H 1(435kj/mol) Bonds formed 1 C=C 1(590kj/mol) 4 C-H 4(435kj/mol) Is this right
Wednesday, November 12, 2008 at 4:53pm by tomi

chemistry
Construct the correct structure for AsClF42-. Please construct the molecule such that the dipole is oriented vertically up or vertically down. - Name the type of hybrid orbitals the central atom forms. - Name the molecular geometry of the compound. - State whether the molecule...
Monday, March 18, 2013 at 4:54am by adex

Chemistry
The bond in O2 is shorter than the O-O bond in compounds that contain an O-O single bond. Explain this observation.
Friday, October 7, 2011 at 5:45pm by Caitlin

chemistry
what are the three basic bonds. Ionic bond, covalent bond, ???? what is the third bond???
Tuesday, May 27, 2008 at 10:39pm by mehrose

Chemistry
Yes, it is. So for like the triple bond in these structure, I know there's two pi bonds, and one sigma bond. But then for like the C---H bond off the triple bond it says the answer is a sigma bond (sp-s) So I don't know what it means by (sp-s) since by my judgement that carbon...
Sunday, September 8, 2013 at 5:07pm by ramire2

chemistry
List the following bonds in order of increasing ionic character. (Enter your answer in the format H-O for the hydrogen-to-oxygen bond in H2O. Use the appropriate <, =, or > symbol to separate substances in the list.) the barium-to-fluorine bond in Ba-F the magnesium-to-...
Monday, November 26, 2012 at 8:43pm by Shawn

Chemistry PLZ HELP!!!!!
The bond energy for the NtriplebondN is much higher than the O-O (Oxygen to oxygen bond is a little more than a single bond but a little less than a double bond).
Monday, April 9, 2012 at 7:20pm by DrBob222

Chemistry
Can someone arrange for the strengths of the bonds below for me please? lone pair, single bond, double bond, triple bond Thanks
Sunday, October 31, 2010 at 12:55am by Steven B.

chemistry
For AsClF42-: a) Name the hybridization of the orbitals of the central atom. s sp sp2 sp3 sp4 sp3d sp3d2 b) Estimate the Cl-As-F bond angle. Slightly less than 90∘ Exactly 90∘ Slightly greater than 90∘ Slightly less than 109.5∘ Exactly 109.5∘ ...
Friday, January 11, 2013 at 5:26am by Anonymous

Physics and Chemistry
What chemical phenomenon accounts for the elasticity seen in solids? covalent bond hydrogen bond ionic bond all of the above.
Saturday, June 6, 2009 at 5:59pm by Taylor

chemistry
The average bond enthalpy for a C=C double bond is 614kj/mol and that of a C-C single bond is 348 kj/mol . Estimate the energy needed to break the bond in 2-butene. i got it wrong what i did was i took :pi bond = 614-346 but it said that i got J/mol instead of kj .. i don't ...
Wednesday, November 19, 2008 at 9:46pm by hot kelly

chem
Think about this. A single bond C-C is a sigma bond. The double bond is a sigma bond + a pi bond. So would the difference between energy of double bond and single bond be the pi bond?
Wednesday, November 12, 2008 at 4:31pm by DrBob222

Science
To form an oxygen molecule (O2), two oxygen atoms share two pairs of electrons. What kind of bond is shown by this? Select all which apply. Ionic Bond Single Bond Double Bond Covalent Bond Triple Bond C and D?
Friday, February 28, 2014 at 1:38pm by Anonymous

Physical Chemistry
Estimate the heat of the formation of each of the following molecules useing the bond dissociation energies provided (in KJ/mol) (a) NH3 (b) H2O (C) H2O2 D(NN)=944; D(H-H)=436; D(OO)=498; D(O-O)= 142; D(N-N)=391; D(O-H)=464 NB>all the brackets are foot note
Wednesday, March 14, 2012 at 12:03am by VybzMachine

economics
Assuming that the bond is a simple-interest bond..... In year 1, the bond pays 100*.04=$4. In year 2 the bond again pays $4. In each of the years 3,4, and 5 the bond pays $4. So, over 5 years, the bond pays..... (Note that some bonds pay compounding interest (the "interest ...
Monday, December 10, 2007 at 1:03am by economyst

chemistry
For the reaction shown below complete the following calculations. H2(g) + C2H4(g) --> C2H6(g) (a) Estimate the enthalpy of reaction using the bond energy values in Table 9.4. (b) Calculate the enthalpy of reaction, using standard enthalpies of formation. (ΔHf for H2, ...
Monday, October 27, 2008 at 11:24pm by hannah

chemistry
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short (bond dissociation entalpy 945 kjmol-1,bond length 109.8 pm) while that in O2 is weaker and longer (bond dissociation entalpy 497 kJ mol-1,bond ...
Tuesday, December 13, 2011 at 8:05am by rebecca

chemistry
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short (bond dissociation entalpy 945 kjmol-1,bond length 109.8 pm) while that in O2 is weaker and longer (bond dissociation entalpy 497 kJ mol bond length ...
Wednesday, December 21, 2011 at 6:21pm by sandra

chemistry
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short (bond dissociation entalpy 945 kjmol-1,bond length 109.8 pm) while that in O2 is weaker and longer (bond dissociation entalpy 497 kJ mol-1 bond ...
Thursday, December 22, 2011 at 10:06am by sandra

chemistry
Use bond energies to predict the molar enthalpy of combustion of acetylene gas. 2C2H2 + 5O2--> 4CO2 + 2H2O I am confused as to how to do the 2C2H2 in relation to the bonds? how many c-c bonds would there be, or would they be triple bonds?
Monday, October 11, 2010 at 2:02pm by ben

Chemistry
What are charateristic of a ionic bond and a chemical bond? Answered below for characteristics of ionic bonds. I don't understand characteristics of chemical bond since an ionic bond is a chemical bond. Perhaps you can rephrase your question. For my partial answer look on this...
Thursday, November 30, 2006 at 8:14pm by Pretty in Pink

chem
Are bond energies (single and multiple bonds) applicable only to gas phase?? For instance, I can use the bond energy data to calculate for enthalpy of reaction for the formation of water: 2 H2(g) + O2(g) -> H2O(g) But I can't directly use it to calculate for neutralization ...
Wednesday, September 19, 2012 at 9:35am by Namie

Science- Chemistry
Zn Metallic bond Propane Covalent bond Calcium Carbonate:Both Ionic and Covalent bond
Tuesday, December 11, 2012 at 9:16am by Praphul

Chemistry
For AsClF4^2-: a)Name the hybridization of the orbitals of the central atom. i)s ii)sp iii)sp2 iv)sp3 v)sp4 vi)sp3d vii)sp3d2 b)Estimate the Cl-As-F bond angle. i)Slightly less than 90 ii)Exactly 90 iii)Slightly greater than 90 iv)Slightly less than 109.5 v)Exactly 109.5 vii)...
Friday, January 11, 2013 at 1:32am by Chemgam

Chemistry
In comparing the same two atoms bonded together, the greater the bond order, the shorter the bond length, and the greater the bond energy. Why is this the case?
Tuesday, October 19, 2010 at 11:02pm by Ana

Bio-Chemistry
Which compound is capable of donating a proton (H+)? A. Acetic acid B. Sodium hydroxide C. Acetylene D. Pentane E. Cyclohexane Which of the following statements is not true of a C-C triple bond? A. Longer bond length than a C=C double bond. B. 180 degree bond angles C. Each ...
Tuesday, January 31, 2012 at 7:27pm by Ryan

chemistry
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short (bond dissociation entalpy 945 kjmol-1,bond length 109.8 pm) while that in O2 is weaker and longer (bond dissociation entalpy 497 kJ mol-1
Tuesday, December 20, 2011 at 8:19am by laura

Chemistry
I have to build a model of a molecule and I was wondering how to determine its bond lenghts. (It has C-H, C-O, C=O, C-N, C-C & C=C bonds.) Also, will the lengths of all of one type of bond be the same throughout the molecule? Er...for example, if I found the length of a C-H ...
Friday, December 5, 2008 at 10:48pm by Lucy X

organic chemistry
plz tell me about natureof bonding and forces ,heat of hydrogen,anti bandister bonding electrons.primary bond,secondary bond and tertiary bond
Saturday, April 16, 2011 at 10:23am by naila

Chemistry
Generally, the more the atoms are separated the weaker the bond. In the case of HF vs HI, the I atom is MUCH larger than the F atom, therefore, the HI bond is weaker than the HF bond. And that is reasonable, since bond strengths relies upon charge and distance. The closer ...
Tuesday, December 11, 2007 at 5:56pm by DrBob222

Chemistry
Consider the Lewis structure for the major resonance form of PCS. (Note that carbon is the central atom.) The structure shows: a. A phosphorus-carbon triple bond and a carbon-sulfur single bond. b. A phosphorus-carbon double bond and a carbon-sulfur double bond c. A ...
Monday, April 26, 2010 at 10:59pm by Mary

Chemistry
As I suggested two days ago, you add it across the double bond. That is, break the double bond so you have a single bond to single bond C, then to the left C place the H from HI and to the right C place the I so you will have CH3CH2CHICH3. I would then name that compound as 2-...
Wednesday, November 19, 2008 at 1:35pm by DrBob222

Chemistry
What is Delta H degrees for the gas-phase reaction below? CH4+ CL3 = CH3CL+ HCL Bond dissociation energies of CL-CL, C-CL, H-CL, and H-C are 243, 339, 431, and 414kj/mol respectively a)113kJ b)-113kJ c)263kJ d)-263kJ Can somebody teach me how to solve this?
Friday, July 23, 2010 at 10:40pm by Christian

chemistry help
for the compound: carbon in the middle with 3 bonds -double bond to oxygen -bond to Mn(CO)5 -bond to CH3 group is the oxidation state of the metal +1? d count 6? total electron count 20? coordination number 7?
Thursday, February 5, 2009 at 5:43pm by brian

chemistry help
or the compound: carbon in the middle with 3 bonds -double bond to oxygen -bond to Mn(CO)5 -bond to CH3 group is the oxidation state of the metal +1? d count 6? total electron count 20? coordination number 7?
Thursday, February 5, 2009 at 6:29pm by brian

Chemistry
SO2 can be drawn as a molecule which satisfies the octet rule (using one double bond and a single bond) or as an expanded octet (using two double bonds). A measurement of the S-O bond distance demonstrates that the two bond lengths are identical. Does this clarify which Lewis ...
Sunday, October 25, 2009 at 11:49am by Adam

chemistry
1998 scientists using a special type of electron microscope were able to measure the force needed to break a single chemical bond. If 2.0 x 10^-9 N was needed to break a C-Si bond, estimate the bond enthalpy in kJ/mol. Assume that the bond had to be stretched by a distance of ...
Monday, September 26, 2011 at 1:04pm by Amber

Chemistry College (Need to know!)
Your signs on the right side are reversed. Bond breaking is endothermic and bond formation is exothermic. Some bond formations are endothermic (i.e. hydrogen bonding) that must be taken into account in conjunction with hydration which is also bond formation. ∆H(soln...
Thursday, June 11, 2009 at 5:18pm by GK

chemistry please
or the compound: carbon in the middle with 3 bonds -double bond to oxygen -bond to Mn(CO)5 -bond to CH3 group is the oxidation state of the metal +1? d count 6? total electron count 20? coordination number 7?
Thursday, February 5, 2009 at 7:28pm by mary

physics
Equate energies at both elevations, assuming no loss due to air resistance. At h=0.95 Total energies, E1 =PE+KE =mg(0.95)+(1/2)m(4.25²) At h=0 (ground) Total energies, E0 =PE+KE =mg(0)+(1/2)m(v²) Equate E0 and E1 and solve for v. This is similar to the previous ...
Tuesday, December 21, 2010 at 1:26pm by MathMate

Chemistry
1. How does the strenght of a covalent bond relate to bond length? 2. Compare the degree of polarity in HF, HCL, HBr, and HI? 3. Given that it has the highest electronegativity, can a fluorine atom ever from a non-polar covalent bond? Explain your answer.
Wednesday, January 7, 2009 at 8:20pm by Kate

chemistry
1. CH3 single bond to N double bond to C double bond to O (Neutral charge all). 1 lone pair on N (2e), 2 lone pairs on O (4 electrons). 2.CH3 single bond to N (positive charge) triple bond to C (neutral) single bond to O (negative charge). 3 lone pairs on O.
Sunday, April 3, 2011 at 4:07am by Tony

Chemistry
The Na to CN bond is ionic. The C to N bond (it's C triple bond N) is covalent, specifically sp hybridization. Certainly the molecule is polar because of the ionic nature of the molecule.
Friday, March 6, 2009 at 2:23pm by DrBob222

biology
Which of the following bond types is Fexofenadine capable of forming with a suitable partner molecule? Indicate your answer by checking "Yes" or "No" as appropriate. Bond type Can Fexofenadine form this bond? Hydrogen Bond Ionic Bond van der Waals forces As a whole, is the ...
Wednesday, March 13, 2013 at 12:53pm by selly

chemistry
The N-N bond energy is difficult to measure. Given the values of 190 kJ/mol for the N-Cl bond energy and 240 kJ/mol for the Cl-Cl bond energy, determine the maximum de Broglie wavelength of an electron capable of breaking the N-N bond. Express your answer in m.
Thursday, May 30, 2013 at 6:37pm by ssss

chemistry
The N-N bond energy is difficult to measure. Given the values of 190 kJ/mol for the N-Cl bond energy and 240 kJ/mol for the Cl-Cl bond energy, determine the maximum de Broglie wavelength of an electron capable of breaking the N-N bond. Express your answer in m.
Saturday, June 1, 2013 at 8:13am by nonu

chemistry
The N-N bond energy is difficult to measure. Given the values of 190 kJ/mol for the N-Cl bond energy and 240 kJ/mol for the Cl-Cl bond energy, determine the maximum de Broglie wavelength of an electron capable of breaking the N-N bond. Express your answer in m.
Saturday, June 1, 2013 at 8:15am by nonu

Finance
(Bond valuation) A $1,000 face value bond has a remaining maturity of 10 years and a required return of 9%. "The bond's coupon rate is 7.4%. What is the fair value of this bond?
Sunday, October 7, 2012 at 6:34pm by Kim

Physics(checking answer)
Two 3.0g bullets are fired with speeds of 40.0 m/s and 80.0 m/s respectively. What are their kinetic energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies? I got 60 for the first bullet and 120 for the second. I am not sure I used the ...
Sunday, October 31, 2010 at 1:27pm by Cory

chemistry
Aluminum fluoride, AlF3, exists as a gas at 1000 degrees C. (a) The Al-F bond energy is observed to be 659 kJ/mole. Calculate the Al-Al bond energy if the F-F bond energy 154.8 kJ/mol. Calculate the % ionic character of the Al-F bond.
Monday, March 25, 2013 at 12:49am by Chemq

Chemistry
Your answer is close but not quite there I don't think. It takes energy to break the H-H bond and it takes energy to break the O-O bond. Forming the O-H bond produces energy. The sum of forming 4-OH bonds is greater than breaking 2 H-H bonds and 1 O-O bond; therefore, the ...
Friday, January 17, 2014 at 3:00pm by DrBob222

chemistry
assuming the valencies of hydrogen nitrogen and carbon are 1,3,and 4. i need to draw a structural formulae for hydrogen cyanide and cyanogen that are consistant with these values H(triple bond)C-N N(triple bond)C-C(triple bond)N
Wednesday, March 14, 2007 at 8:37pm by notty

Chemistry
Explain why bond angle of water is 104' and bond angle of NH3 is 107' both less than tetrahedral bond angle? Explain
Thursday, August 4, 2011 at 10:28pm by Abhishek kumar sahi

ap chem
Another tutor may know what you are asking but, as I understand it, there is a bond energy for the O-O bond in H2O2 and a bond energy for the O-H bond in H2O2 (two of them) but no bond energy as such for the compound, H2O2. You may be thinking of delta H of formation for H2O2 ...
Thursday, November 15, 2007 at 7:08pm by DrBob222

chemistry
This is ok but you omitted the double bond in CH2=CHCH2CH3. The double bond needs to be there (even though it's a condensed formula). When it's omitted the observer doesn't know if it is a double bond or if you just forget and left out the two H atoms.
Tuesday, February 14, 2012 at 10:12pm by DrBob222

chemistry
no, i have options. select and tell me correct one. hydrogen bond hydrophobic bond sigma sp sigma sp2 sigma sp3 sigma sp4 sigma sp3d1 sigma sp3d2 pi bond
Sunday, June 2, 2013 at 2:00am by Anonyms

Finance
A three-year bond has 8.0% coupon rate and face value of $1000. If the yield to maturity on the bond is 10%, calculate the price of the bond assuming that the bond makes semi-annual coupon interest payments.
Saturday, February 19, 2011 at 1:51pm by rad

Finance
A three-year bond has 8.0% coupon rate and face value of $1000. If the yield to maturity on the bond is 10%, calculate the price of the bond assuming that the bond makes semi-annual coupon interest payments.
Friday, April 8, 2011 at 11:21pm by Monique

organic chemistry
why can't you convert cis-2-butene into trans-2-butene simply by undergoing a rotation/ The cis and trans isomers of 2-butene involve a pi bond as well as a sigma bond. To "rotate" the molecule, the pi bond must be broken (remember this double bond is planar) and that involves...
Tuesday, January 16, 2007 at 7:23pm by Desiree

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