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In the Haber process, ammonia is synthesized from N2 and H2: N2 (g) + 3 H2 (g) ? 2 NH3 (g) DGº at 298 K for this reaction is -33.3 kJ/mol. The value of DG at 298 K for a reaction mixture that c
A 1.00 g sample of a manganese steel is dissolved, oxidized to permanganate, and diluted to 500 mL. Using a 1.00 cm optical cell, the absorbance measured is 0.500. What is the % manganese in the ste
Are the following components most accurately described as cofactors, coenzymes, or neither? Fe2+, FAD, metal ion, CoQ, Lipase, Biotin
Prepare (2R,3S)-2,3-dibromobutane (a meso compound) starting from a racemic mixture of (2S,3S)- and (2R,3R)-2,3-dibromobutane
which of the following is always spontaneous A. C2H6O + 3O2 = 2CO2 + 3H2O; delta H is smaller than 0 B. the sublimation of dry ice ( CO2) C. the freezing of water (H2O) D. the formation of water fro
The amount of I3-(aq) in a solution can be detrmined by titration with a solution containing a known concentration of S2O32-(aq)( thiosulfate ion). The determination is based on the net ionic equati
The equation for the reaction is CaCO3(s) + 2HCl(aq) arrow CaCl2(aq) +H2O(l) +CO2(g) The excess HCL (aq) is titrated by 6.45 mL of 0.125 M NaOH(aq). Calculate the mass percentaageof CaCO3(s) in the
How many mL of a 45.0%(m/v) solution of NaCl would you need in order to have 12.0g of NaCl? Molar mass of NaCl is 58.54g/molhow many mL of a 45.0%(m/v) solution of NaCl would you need in order to ha
How many grams of NaOH are in a 225.0 mL sample of 2.5 M solution of NaOH.? Molar mass of NaOH is 40.0 g/mol
How many mL of a 22.5% (v/v) ethanol solution would you need to measure out in order to have 12.5 mL of ethanol. (Molar mass of ethanol is 46.07g/mol
Is this system at equilibrium? If not, will the amount of N(g) increase or decrease as the system proceeds to equilibrium at 4000 k in a fixed volume
A particular metallic element, M, has a heat capacity of 0.36 J * g^-1 * K^-1. It forms an oxide that contains 2.90 g of M per gram of oxygen. (a) Using the law of Dulong and Petit (Cp x M = 25 J pe
Give a specific example of an ideal-gas reaction for which the (a) equilibrium position is independent of pressure (b) the equilibrium position is independent of temperature
An ideal-gas reaction mixture is in a constant-temperature bath. State whether each of the following will change the value of K°p (a) addition of a reactant (b) addition of an inert gas (c) chan
Devise a cell in which the following is the reaction and calculate the standard cell potential: Ga(s) + CuSO4(ag) --> Ga2(SO4)3 + Cu(s)
A concentration cell has the same kinds of half-cells, for example Cu?CuSO4(aq), but has a nonzero emf due to differences in CuSO4 molalities. Explain how it is possible for the galvanic cell Cu(s)
Which of the following combinations of quantum numbers are allowed? A) n=4, I=2, mi=1, ms= -1/2 B) n=2, I=2, mi=2, ms= 1/2 C) n=1, I=0, mi=1, ms= 1/2 D) n=4, I=1, mi=1, ms = 1/2
What is the IUPAC name for Hydrogen Chloride. I need to find all of the specificaions, CAS number, ect, and I can not find this compound anywhere in the CRC handbook of chemistry and physics.
Identify the atom whose electron configuration is [Ne]3s^23p^6. Write the one or two letter symbol for the element. How many unpaired electrons are there in the ground state of this atom?
Calculate D for hemoglobin in water at 25 degrees celsius ( ? = 0.89 cP ), given that Vm= 48000 cm^3/mol for hemoglobin. Assuming the molecules are spherical and estimate the volume of a molecule as
In an electrolysis experiment a current of 0.10 A flows through a solution of conductivity k= 0.010?^-1 and cross sectional area 10 cm^2. Find the electric field strength in the solution.
Rank the following elements by electron affinity, from most positive to most negative EA value. Tellurium, Bromine, Arsenic, Sodium and Neon
The viscosity of H2 at 0 degrees celsius and 1 atm is 8.53 uPa s. Find the viscosity of D2 at 0 degrees celsius and 1 atm
Part A What is the reaction that corresponds to the first ionization energy of rubidium, Rb ? Part B What is the reaction that corresponds to the electron affinity of iodine, I
A student added 2.33g Phenyl Propane, 2.73g Sodium bromide, and 5ml of Sulfuric acid (along with boiling chips). The solution was refluxed for 45 min and distilled. What happened during this reactio