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With aqueous H2CrO4, compound A was oxidized to an optically inactive dicarboxylic acid C, C6H10O4. Give structures for compounds A, B, and C; do not specify stereochemistry
Liquid HCN is unstable with respect to trimer formation. What would be the structure of this trimer
Use the enthalpies of bond formation to rationalize why nitrogen forms a dimer and phosphorous a tetramer.
A 46.2mg sample of phosphorus reacts with selenium to form 135mg of the compound. What is the empirical formula of the phosphorus selenide
When white phosphorous (P4) is heated above 1100 K, the following equilibrium is observed in the gas phase P4 ? 2P2 b. The equilibrium constant has been measured as a function of temperature for thi
Acetic acid when pure, has a freezing point of 16.0 Celsius; Liquid acetic acid has a heat capacity of 1.96J/g*C. A 25.0 g piece of solid acetic acid at 16.0C is placed into an insulated container c
A sample of unknown hydrate of FeCl3 weighs 8.693g. After heating the sample to constant mass, the remaining anhydrous salt weighs 5.216g. What is the experimental formula for the hydrate
1.3 Kg of Ethane gas (C2H6 ) was heated from 27.0 degree Celsius to 78.0 degree Celsius. Calculate delta E at constant pressure. ( Cp= 52.92 j / K mol)
Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4 of mass 20.0 mg.
What quantity of heat must be absorbed to convert 92.5 g of liquid vapor at its boiling point, -24.09 degrees C? The heat of vaporization of CH3Cl is 21/40kJ/mol
use the rydberg equation to calculate the wavelength in angstroms of the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 3
The electron-domain geometry is tetrahedral. The molecular geometry is trigonal pyramidal. d) The electron-domain geometry is tetrahedral. The molecular geometry is trigonal planar. e) The electron-
The central atom has 4 electron domains. d) The central atom has 5 electron domains. e) The central atom has 2 electron domains.
Calculate the number of moles of an ideal gas if it has a pressure of 1.21 atm, a volume of 1.68 L, and a temperature of 217 oC. Use R = 0.0821 L-atm/mol-K for the value of the gas constant
Methane and hydrogen sulfide gases react to form carbon disulfide and hydrogen gas(es). CH4(g) + 2 H2S(g) CS2(g) + 4 H2(g) At a certain temperature and pressure 28.7 L of CH4 reacts with 57.4 L of H
Compare the heat produced by the complete combustion of 1 mole of methane (CH4) with a mole of water gas (0.50 mole H2 and 0.50 mole CO) under standard conditions
The numerical value of Kc depends on the form of the balanced equation. D) When quoting Kc it is customary to omit units.
Calculate the percent ionization of 7.5×10?3 M butanoic acid in a solution containing 7.0×10?2 M sodium butanoate.
A catalyst increases the overall rate of reaction by lowering the activation energy, Ea, for A) both the forward reaction and the reverse reaction.
Write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene and which equilibrium will favor the s-tans conformation more str
under free radical conditions when the concentration of Br2 is kept very low, the following reaction occurs: 1-octene to (Z)-1-bromo-2-octene (39%), (E)-1-bromo-2-octene (44%), 3-bromo-1-octene (17%
A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.719 V. If the silver-silver chlor
What are the partial pressures of N2 and H2O. (NH4)2Cr2O7(s) ? N2(g) + 4 H2O(g) + Cr2O3(s) I answered .066 atm
When an ion-selective electrode for X was immersed in 0.0670 M XCl, the measured potential was 0.0250 V. What is the concentration of X when the potential is 0.0400 V