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April 30, 2016

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

Number of results: 25,008

Chemistry - Chemical Equilibrium
In a solution with carbon tetrachloride as the solvent, the compound VCl4 undergoes dimerization: 2VCl4 <-> V2Cl8 When 6.6834 g VCl4 is dissolved in 100.0 g of carbon tetrachloride, the freezing point is lowered by 5.97*C/ Calculate the value of the equilibrium constant ...
December 10, 2013 by Dave

chemistry
Fe3O4 can be reduced by treatment with hydrogen to yield iron metal and water vapor write the balanced equation. this process required 36kcal for every 1.00 mol of Fe3O4 reduced. how much energy in kcal is required to produce 64g of iron. how many grams of hydrogen are needed ...
June 7, 2015 by jennifer

Health (can someone plz check my answers??)
1. The functions of the respiratory system are... (there are two answers) A. To pump blood to the body B. To deliver oxygen to the body*** C. To remove carbon dioxide from the body*** D. To absorb nutrients 2. The dome-shaped muscle that lies below the lungs and is important ...
February 22, 2016 by Anonymous

College Chemistry
A hydrogen-like ion is an ion containing only one electron. The energy of the electron in a hydrogen-like ion is given by: En=-(2.18x10^(-18)J)Z^2(1/(n^2)) where n is the principal quantum number and Z is the atomic number of the element. Calculate the ionization energy (in kJ...
November 22, 2010 by Anonymous

Chemistry - Help please!
A hydrogen-like ion is an ion containing only one electron. The energy of the electron in a hydrogen-like ion is given by: En=-(2.18x10^(-18)J)Z^2(1/(n^2)) where n is the principal quantum number and Z is the atomic number of the element. Calculate the ionization energy (in kJ...
November 22, 2010 by Anonymous

chemistry
The melting point of a compound is not influenced by which of the following? A. polarity B. electronegativity of its atoms C. Van der Waals forces D. hydrogen bonds E. isotope of carbon
May 13, 2008 by Mable

Chemistry
Consider the decomposition reaction of the following represented hydrogen peroxide: 2 H2O2 (aq) = 2 H2O + O2 In the experiment, the average speed of this reaction given time interval was 16 mol s- in relation to hydrogen peroxide. What is the average speed production of ...
January 21, 2016 by Victoria

A.P. Chemistry
Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined. Some of the data obtained are given below Percent by weight Molecular Compound of Element Q Weight X 64.8% ? Y 73.0% 104. Z 59.3% 64.0 (a) the vapor...
October 2, 2011 by Lucy

Chemistry
Calculate the partial pressure of monatomic hydrogen in hydrogen gas at 2000 K and 1 atm pressure. Given: (i) For ½ H2  H, Ho298=217,990 J; So298=49.35 J/K. (ii) Assume that the heat capacity of monatomic gas to be 3/2R (iii)The heat capacity of H2 assume to be 31 J...
March 31, 2012 by Plizzz help me

kim
a gaseous hydrocarbon reacts completely with oxygen gas to form carbon dioxide and water vapor. given the following data, determine (delta)HoF for hydrocarbon: (delta)Horxn=-2044.5kj/mol hydrocarbon (delta)HoF CO2= -393.5kj/mol (delta)HoF H2O = -242kj/mol denstity of CO2 and ...
April 20, 2008 by chemistry

Astronomy
Mass of the Sun = 1.989 x 10^30 kg Mass of Hydrogen Atom = 1.00794 grams If we assume the Sun is made totally of hydrogen, how many hydrogen atoms are contained within the Sun? If the Sun converts hald of these hydrogen atoms into helium over its lifetime of about ten billion ...
November 27, 2011 by Jobeth

chemistry
Consider the balanced equation 2A(g) + 3G(g) \ 2X(g) + Z(g). To a 20.0 L container maintained at a temperature of 127 C were added 0.200 mol of A, 0.500 mol of G, 0.400 mol of X, and 0.600 mol of Z. After equilibrium was established, it was found that 0.340 mol of X was ...
July 27, 2008 by alexis

math
Luis Giron works at the Pancake Palace from 3:00 p.m. until 12:15 a.m. 5 nights a week. If he takes a 30-minute break each evening, how many hours per week does he work?
February 16, 2011 by Anonymous

Chemistry
If ammonia is manufactured at 356 K, is the reaction spontaneous, given that the enthalpy and entropy change for the reaction are -93 kJ/mol and -198 J/mol K, respectively? A. Yes, the ΔG is -92 kJ/mol. B. No, the ΔG is 92 kJ/mol. C. No, the ΔG is 22.5 kJ/mol. D...
December 6, 2014 by Morgan

mathematics
Lily Adams purchased a $1,000 bond at 70. The bond pays 4% What was the cost of the bond? What was the annual interest? What is the yield (to the nearest tenth of a percent)? (please only post of you know answer or at least will tell me how to get the answers on my own/ tell ...
June 16, 2015 by Anonymous

Chemistry
A hydrogen atom has a mass of 1.673x10^-24 g How many hydrogen atoms would you have in 5.6 g of hydrogen?
September 23, 2014 by Anonymous

Finance
Which of the following statments is CORRECT? a. Assume that two bonds have equal maturities and are of equal risk, but one bond sells at par while the other sells at a premium above par. The premium bond must have a lower current yeild and a higher capital gains yield than the...
October 20, 2011 by Alice

Chemistry
Calculate the number of moles of carbon atoms present in 1.1 g of ethanol (C2H6O). Answer in units of mol.
September 16, 2015 by Nicole

chemistry
If 3 moles of a compound use 12 J of energy in a reaction, what is the Hreaction in kJ/mol? A. -4 kJ/mol B. -0.004 kJ/mol C. 0.004 kJ/mol D. 4 kJ/mol
March 14, 2012 by princess

Chemistry ?
How many moles are contained in a 4.67-L sample of gas at 30C and 199 kPa? A. 1.7 mol B. 11.8 mol C. 0.37 mol D. 3.7 mol I guessed D, but I'm not sure.
August 15, 2013 by Kaylee

Chemistry of Life
Which statement is true about water molecules? The oxygen atom has a negative charge. The hydrogen atoms do not share electrons. Water molecules move randomly around each other. Water molecules cannot dissolve many substances. Question 2. How does water relate to the ability ...
September 26, 2014 by Sara

Org. Chem.
why don't water and benzophenone hydrogen bond? benzophenone has a C=O and water forms H bonds too.
September 14, 2009 by Chelsea

physics
The physics of the DNA molecule. The two strands of the DNA molecule are held together by electrostatic forces. There are four bases which make up the DNA molecule, thymine (T), adenine (A), cytosine (C), and guanine (G). In two of the bases, thymine and adenine, an oxide ion ...
April 28, 2011 by aly

CHEM URGENT
Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state
January 17, 2009 by henry

chemistry
What volume at STP would be required to react with 0.100 mol of hydrogen to produce ammonia?
March 1, 2011 by Anonymous

science
list three differences between ions and isotopes? An ion is an atom that has at least one fewer electrons than it has protons. Thus, an ion always has positive charge. Hydrogen usually has one proton and one electron and has neutral charge. The hydrogen ion H+ has one proton ...
December 3, 2006 by airelle

chemistry
Determine the theoretical and percent yield of hydrogen gas if 78.0 g water undergoes electrolysis to produce hydrogen and oxygen and 3.02 g hydrogen is collected.
January 19, 2012 by Anonymous

chemistry
Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and oxygen and 3.63 g hydrogen is collected?
January 25, 2012 by franklin

chemistry
Determine the theoretical and percent yield of hydrogen gas is 36 g of water undergoes electrolysis to produce hydrogen and oxygen and 3.8 g of hydrogen is collected.
February 8, 2012 by Elle

Chemistry
Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and oxygen and 3.23 g hydrogen is collected.
May 11, 2013 by Charles

Chemistry Help!!!!
for each of the following pairs of elements, give the correct molecular formula, explain how you arrived at this answer( you may use the Bohr model notation, or the orbital model notation, or explain linguistically) and note whether the bonding is covalent or ionic. ( I tried ...
March 26, 2012 by John

Chemistry
How do I do the empirical formula for 37.01% carbon, 2.22% hydrogen, 18.50% nitrogen, and 42.27% oxygen? My teacher gave me the answer (C7H5N3O6), but I can never get that answer.
December 5, 2014 by Grace

CHEMISTRY
An analysis of a compound gave 40% carbon 3.7% hydrogen. the vapour density of the compound is 30. calculate the empirical and molecula fomular.
November 17, 2015 by NEMUEL

Chemistry
Hi, I was just wondering how you would calculate how much gas would dissolve into 500ml of water and if there was 0.1% of the solute in the atmosphere in grams? Am finding this very difficult! Example: Hydrogen sulphide: molar mass: 34g/mol Water: molar mass 34g/mol
April 14, 2010 by John C

chemistry
the vapor pressure of carbon sulfide is 355.6 torr at 25 degrees Celsius. what is the vapor pressure of a solution prepared by dissolving 12.52 g naphthalene (C10H8, 128.2 g/mol) in 125.0 mL CS2 liquid (76.14 g/mol, 1.261 g/mL)? Assume the solution obeys Raoult's law, and ...
March 4, 2015 by alexis

chemistry
Calculate the number of moles in 75.0 g of oxygen gas. A. 2.34 mol O2 B. 4.69 mol O2 C. 750 mol O2 D. 12.5 1023 mol O2 B
November 11, 2012 by Cathy

physics
Given that 12g of carbon combines completely with 16g of oxygen to form carbon monoxide, how many grams of carbon monoxide can be made from 48g of carbon and 48g of oxygen
April 24, 2011 by Abbie

chemistry
what color is hydrogen? conductivity of hydrogen? atomization, fusion and vaparization of hydrogen?
March 9, 2008 by timmathy

Math
Mae Assurian is an electrician. She works form 6:45 a.m. to 3:30 p.m. Monday through Friday, and takes a 45-minute break for lunch. How many hours per week does Mae work?
November 30, 2010 by Anonymous

consumer math
Mae Assurian is an electrician. She works from 6:45 a.m. to 3:30 p.m. Monday through Friday, and takes a 45-minute break for lunch. How many hours per week does Mae work?
August 5, 2011 by bla

Science
Which of the following pairs of elements would have the most similar chemical properties? A.Boron (B) and Fluorine (F) B.Hydrogen (H) and Helium (He) C.Beryllium (Be) and Magnesium (Mg) D.Carbon (C) and Oxygen (O)
October 10, 2011 by Anonymous

Chemistry
If at a certain instant during the course of the reaction 2 NO2(g) + F2(g) 2 NO2F(g), the rate of formation of the product were 0.16 mol/L∙s, how fast would the F2 be disappearing (also in mol/L∙s) at that same instant in time? A) 0.16 mol/L∙s B) 0.080 mol...
July 30, 2012 by Taylor

Chemistry
How would you calculate the pH of the buffer if 1.0mL of 5.0M NaOH is added to 20.0mL of this buffer? Can someone please explain to me how to do B and C step by step so I could understand it clearly? :) Say, for example, that you had prepared a buffer in which you mixed 10.30 ...
March 4, 2014 by Airin

Chemistry
How would you calculate the pH of the buffer if 1.0mL of 5.0M NaOH is added to 20.0mL of this buffer? Can someone please explain to me how to do B and C step by step so I could understand it clearly? :) Say, for example, that you had prepared a buffer in which you mixed 10.30 ...
March 5, 2014 by Airin

Chemistry
How many moles of sodium chloride must be added to an aqueous solution that contains 2.0 moles of silver nitrate in order to precipitate 0.50 moles of silver chloride? A) 0.25 mol B) 0.50 mol C) 1.0 mol D) 2.0 mol E) 1.5 mol The answer is B. I have no idea what to do. I was ...
March 22, 2009 by Jill

Chem---DrBob222
Calculate the oxidation # for each atom in the molecule below. Can you help me with the rest. Thank you!!! H H H H / / / / H -- C ---C ===C ----N .. / / H H Group # # of E Oxidation # H 1 0 1 x 7 = 7 C 4 7 C 4 C 4 N 5 3 H atom attached to first C atom. 1 H atom to second C ...
September 18, 2014 by Layla

physics
if hydrogen and chlorine react to form hydrogen what would be the volume of HCL that is formed if 60m cubed of hydrogen is completely used up in the reaction?
October 5, 2009 by khanyi

Chemistry
According to the following reaction, how many moles of hydrogen iodide will be formed upon the complete reaction of 30.0 grams of hydrogen gas with excess iodine? hydrogen (g) + iodine (s) hydrogen iodide (g) moles hydrogen iodide
September 21, 2007 by Jamal

Chemistry
A 0.528 gram sample of a metal, M, reacts completely with sulfuric acid according to: M+H2SO4 -> MSO4+H2 A volume of 205 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0 Torr and...
October 17, 2012 by Bill

chemistry
Draw one of the Lewis structure of the N2O5. In each case one oxygen bridges the nitrogens (N-O-N single bond) and 2 other oxygens are bonded to each N. How many equivalent resonance structures are there that satisfy the octet rule and where O makes at most 2 bonds?
November 4, 2014 by john

chemistry
Draw one of the Lewis structure of the N2O5. In each case one oxygen bridges the nitrogens (N-O-N single bond) and 2 other oxygens are bonded to each N. How many equivalent resonance structures are there that satisfy the octet rule and where O makes at most 2 bonds?
November 6, 2014 by K

Chemistry
Hi, I was given the reactants for the chemical reaction and I am supposed to write the product. The equation must be balanced. Can someboy please check my work? Thanks :-) 3NaOH + Fe(NO3)3 --> Fe(OH)3 + 3Na(NO3) 2NH3 --> N2 + 3H2 2H2 + o2 --> 2H2O 4Mg + H2SO4 --> ...
December 9, 2006 by Lisa

chemistry
Combustion analysis of 1.200 gram of an unknown compound containing carbon, hydrogen, and oxygen. What is the empirical formula of the compound?
February 21, 2011 by Anonymous

science(chemistry)
an organic compound contains 49.3 percent carbon,6.84percent hydrogen and its vapour density is 73.molecular formula of compound
June 5, 2011 by akshar

Chemistry
A 2.20 g-sample of a compound containing carbon, hydrogen, and oxygen is burned and it produces 4.61 g CO2 and 0.94 g H2O. What is the empirical formula of this compound?
September 7, 2015 by JORDAN

Chem
How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 76.6 moles of water vapor?
April 20, 2016 by Anonymous

chemistry
in the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 4.59 mol of magnesium and 4.59 mol of hydrochloric acid are reacted, how many moles of magnesium chloride are produced ?
August 26, 2013 by tyler

Health-Please Help!!!
1. The functions of the respiratory system are (select all that apply) A. to pump blood to your body B. to deliver oxygen to the body C. to remove carbon dioxide from the body D. to absorb nutrients 2. The dome-shaped muscle that lies below the lungs and is important in the ...
February 8, 2016 by Sammy

finance (firm's net income)
If a firm has a break-even point of 20,000 units and the contribution margin on the sirm's single product is $3.00 per unit and fixed costs are $60,000, what will the firm's net income be at sales of 30,000 units? o.k. the break even amount will be 20,000 units time $3.00 = $...
July 25, 2008 by Jason

chemistry
how do I calculate rate velocity using absorbence at 412/ min-1.
February 22, 2015 by de1

biochemistry
how do I calculate rate velocity using absorbence at 412/ min-1.
February 22, 2015 by de1

Chemistry
What type of bond is formed when two or more non metals bond with each other? and What type of bond is formed when a metal and non metal bond with each other?
January 23, 2012 by Jesse

Finance
1.You buy a SML Bond for $980. The bond has a face value of $1000 and an annual coupon rate of 8%. There are 5 years left until maturity. Because of a special delivery by the stork, you decide to sell the bond at the end of year 2 for $1050. What was your return? Why does this...
September 30, 2012 by nick

Finance
(Default risk) You buy a very risky bond that promises a 9.5% coupon and return of the $1,000 principal in 10 years. You pay only $500 for the bond. a. You receive the coupon payments for three years and the bond defaults. After liquidating the firm, the bondholders receive a ...
February 4, 2010 by Rick

Chem
How many moles of hydrogen and oxygen are in 2 moles of water? water: h2o # of molecules = (6.022 x 10^23)(2)= 1.2044 x 10^23 # of hydrogen atoms = (1.2044 x 10^23)(2)= 2.4088 x 10^24 # of oxygen atoms = 1.2044 x 10^24 Did I do this correctly? What do I do about significant ...
July 6, 2009 by Lena

Personal Finance
On December 1, 2004 a $1,000.00 bond, paying 6% interest on January 1st and July 1st of each year is purchased for $950.00. The bond is sold on December 5, 2005 for $980.00. What would be the total monetary return including both interest and capital gains from holding this ...
November 10, 2013 by Anthony

chemistry
How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and 2.00 moles of water? Question 29 options: 4.00 mol 1.67 mol 7.50 mol 3.33 mol 10.0 mol
November 5, 2015 by beverly

chemistry
I will like to know what I am doing wrong in calculating the energy difference when there is a transition of n=3 to n=2 for 1 mol of hydrogen atoms because I keep on getting 1.82*10^(5). Thanks
November 18, 2008 by rosa

Chemistry
how much heat is liberated by the combustion of 206 grams of hydrogen? ΔHcomb= -286kj/mol
February 22, 2010 by Anonymous

chemistry
what is the pressure of H2 if the hydrogen gas collected occupies 14L at 300K and was produced upon reaction of 4.5 mol of Al?
March 14, 2010 by brenda

chemistry
Hydrogen iodide reacts with itself to give hydrogen and iodine. The equilibrium constant is about 2.0 x 10─3 at a particular temperature. If you were to place some hydrogen iodide in a container and seal the container, what would you expect to find at equilibrium: mostly...
April 10, 2013 by alex

Chem (monomers)
Hi I'm having major problems with monomers in proteins. One what is a monomer Two what is it doing in a protien? Much thanks, Rosie A "monomer" is a single unit of a polymer and a polymer is just a bunch of monomers (single units) hooked together. Teflon is a polymer. It is ...
April 15, 2007 by Rosie

Chemistry
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 20.4 g of carbon were burned in the presence of 71.1 g of oxygen, 16.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced? Express your answer to three significant figures ...
December 8, 2015 by Dominick

chemistry
Calculate the theoretical percentage of water in gypsum, rounded to the nearest whole number %. (calcium sulfate dihydrate; CaSO4 2H2O; Ca = 40 g/mol, S= 32 g/mol; O= 16 g/mol; H= 1 g/mol).
February 6, 2013 by tina

chemistry
How many moles of magnesium chloride are formed when 55 mL of 0.70 M HCl is added to 42 mL of 1.204 g Mg(OH)2? Mg(OH)2(s) + 2HCl(aq) MgCl2(aq) + 2H2O(l) A. 0.019 mol B. 0.012 mol C. 0.021 mol D. 0.039 mol
October 13, 2014 by Morgan

Math
I am having a problem with this question and need direction.A $500 8% bond is purchased on Feb. 1,2004 to yield 10% compounded semi-annually. The interest on the bond is payable on Feb. 1 and Aug.1 each year. What is the purchase price if the bond is redeemable at face value ...
June 18, 2010 by Jill

chemistry
write a net ionic equation for the following: 1)Iron (III) chloride reacts with Potassium hydroxide to produce Iron (III) oxide, Potassium chloride, and Hydrogen gas. 2)Hydrochloric acid reacts with Potassium carbonate to produce Potassium chloride, Hydrogen gas and Carbon ...
October 26, 2010 by rachel

Economics
Isabella buys a $1,000 bond that matures in 10 years (that is, she lends $1,000 to the U.S. Treasury for 10 years). The bond pays her $50 every year for 10 years. When the bond matures at year 10, she will receive her $1,000 back as well as her last interest payment of $50....
March 19, 2008 by Anonymous

Chemistry
Hello, What is the hybridization of an H atom on a methane? As far as I understand, the hydrogen has 1 s orbital which bonds only to carbon, so does not have any hybridization. Is this correct? Thank you
July 15, 2010 by Nat

science
If you had 50 atoms of hydrogen, how many atoms each of oxygen, carbon, and nitrogen would you need to have the elements in the same proportion as they are in your body?
November 10, 2014 by Mary

chemistry
Calculate the minimum volume oxygen gas that is required for the complete combustion of a mixture of 20cm carbon monoxide and hydrogen gas
April 21, 2016 by lawal

chemistry
A compound is composed of 19.998% carbon, 3.331% hydrogen, 23.320% nitrogen, and 53.302% Oxygen. Its molar ass is 120.07 gram/mole. What are the empirical and molecular formulas?
December 3, 2010 by regina

chemistry
suppose you have an unknown gas, and wish to determine whether it may be ammonia, hydrogen or carbon dioxide. Describe tests you might use to prove the existence of each of these gases.
December 16, 2010 by jake

chemistry
0.5g of an organic compound x (containing carbon hydrogen oxygen) produces 0.733g of carbondioxide and 0.3g of water on complete combustion.the max spectrum shows mr=60.determine molecular formula of x
December 6, 2015 by ali

Chemistry. Plz Help!
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 20.4 g of carbon were burned in the presence of 71.1 g of oxygen, 16.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced? Express your answer to three significant figures ...
December 8, 2015 by Dominick

Chemistry
I don't understand this question and answer can someone help me? In order to exhibit delocalized pi bonding, a molecule must have . At least resonance 2 resonance structures. & In comparing the same two atoms bonded together, the greater the bond order, the shorter the bond ...
October 20, 2010 by Ana

Biology
Carbon is a an element with an atomic number of 6. Based on this information, which of the following statements is true? A. Carbon can be broken down into simpler component substances. B. Each carbon atom will always have 6 protons. C. Each carbon atom will always have 6 ...
June 15, 2011 by Sherri

Chemistry-DrBob222
I got 62.9 mL. Is this correct? I think HCl is the LR. A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g) What volume of hydrogen gas (in mL) is collected over water at 25 degrees Celsius by ...
March 12, 2016 by Nevaeh

CHEM
I am still not quite grasping how to complete this problem: Posted by K on Sunday, October 14, 2007 at 6:43pm. Many home barbeques are fueled with propane gas C3H8. What mass of carbon dioxide (in kg) is produced upon the complete combustion of 18.9L of propane (approximate ...
October 15, 2007 by K

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 ...
October 10, 2010 by kelsy

Honors Chemistry
"How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2? N2 + 3H2 ---> 2NH3 ==> 28 g N2 x (1 mol N2/14.0 g N2) x (2 mol NH3/1 mol N2) x ( 17.0 g NH3/ 1 mol NH3) = 68 g NH3 25 g H2 x ( 1mol H2/2.0 g H2) x (2 mol NH3/3 mol H2) x (17 g NH3/2 ...
November 8, 2009 by Emily

Chemistry
Give the molecular orbital description [e.g. sigma(sp3-sp3)] for each unique bond in the following structure. CH3NCHCCH I know how to draw the lewis structure and what a sigma and pi bond is, but I don't understand what the (sp3-sp3) part after the bond means or how you ...
September 8, 2013 by ramire2

Chemistry
The concentration of a certain sodium hydroxide solution was determined by using the solution to titrate a sample of potassium hydrogen phthalate (abbreviated KHP). KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol. In the titration 34.67 mL of the ...
October 7, 2014 by melbell

Chemistry
Given C2H60; Some properties of the two compounds are listed below; Compound X: Melting Point Compound Y: -114C | -118C X: Boiling Point y: 78C | -22C X: Net Dipole? Y: Yes | Yes. X: Functional group Y: Alcohol | Ether. i. Draw plausible Lewis structure of compounds X and Y. ...
February 10, 2010 by Bouforyou

AP Chem
A 1.73 g sample of a molecular compound is dissolved in 105 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51C, the normal boiling point of CCl4 is 61.2C. The boiling point constant for CCl4 is 4.95 K kg/mol. What is the ...
December 12, 2012 by John Smith

Math Analysis (similar to my previous question)
How would you set this one up as well? 5. You have up to $30,000 to invest. Your broker recommends investing in AAA bonds yielding 8% and B+ bonds yielding 12%. You decide to invest at most $12,000 in the B+-rated bond and at least $6,000 in the AAA bond. The amount invested ...
October 6, 2009 by Emily

Chemistry
When 3.2 g of ammonium chloride is dissolved in 75 g of water, the temperature of the solution decreases from 22.8C to 20.1C. 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/gC.) A. 14....
December 10, 2014 by Morgan

Macroeconomic
Suppose the current interest rate is 12 percent and a bond with a face value of $500 that pays a coupon rate of 15 percent is selling for $450. Calculate the yield on this bond. How do I calculate the yield on this bond?
December 12, 2014 by Jessica

chemistry
How many moles are in 4.81 x 1024 atoms Na? A. 0.799 mol Na B. 7.99 mol Na C. 481 mol Na D. 7.99 x 10-1 mol Na B
November 10, 2012 by Drew

chemistry
N2 + 3H2 = 2NH3. What is the DeltaGo of the following reaction? 33.5 kJ/mol 34.5 kJ/mol 35.5 kJ/mol 36.5 kJ/mol
March 16, 2015 by khursida

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