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what problem might there be if you attempted to perform the kinetic experiment at -20 degrees celsius
WHen dimethyl ether (CH3OCH3) is burned, 1450 kj of heat are released per mole. How much heat is released when 3.89 grams of dimethyl ether is combusted
What would happen if bezaldehyde react with a high (50%) concentration of sodium hydroxide in the absence of acetone via aldol condensation
The Eo values for the following two half-reactions are listed in an ancient standard reduction potential table as, respectively, 0.907 and 0.972 volts.
The volumes listed correspond to the ½ equivalence point, equivalence point, 1 ½ equivalence point, and 2 equivalence point. The pH will equal pKa2 at the 1 ½ equivalence point,
In the molecular orbital model of benzene, the six p-orbitals combine to form how many molecular orbitals. In the molecular orbital model of benzene, how many pi-electrons are in bonding molecular orb
What role do the potassium chloride (KCl) and potassium sulfate (K2SO4) play in this experiment
Write the net ionic equations and determine the standard potentials for the reaction of copper or zinc with tin (IV). Which of the two reactions should be spontaneous
Given that the standard free energy of formation of MCl2(s) and MO2(s) are, respectively, -311.5 and -286.5 kJ/mol at 25o C. What is the standard change in free energy (kJ) for the following reactio
What is the anhydride of each of the following acids. (a) H2SO4 (b) HClO3 (c) HNO2 (d) H2CO3 (e) H3PO4
A voltaic cell utilizes the following reaction: Al(s) + 3Ag+(aq) Al3+(aq) + 3Ag(s) What is the effect on the cell emf of each of the following changes
A 0.146 g sample of an unknown monoprotic acid (molar mass = 83.0 g/mol) was dissolved in 50.0 mL of water and titrated with a 0.101 M NaOH solution. After the addition of 14.0 mL of base, the
RbNO3 Express your answers as ions separated by a comma. If the compound is not soluble, enter noreaction
A half-cell containing which of the following metals would produce the greatest emf when it is coupled with a half-cell containing aluminum metal
The standard change in enthalpy at 142oC for the following two reactions are, respectively, -23.44 and 94.67 kJ. [1] 4 X(s) + 3 O2(g) + 2 H2O(l) ? 4 HXO2(g)
Calculate the difference in energy between the second and first levels and between the fourth and third level (i.e. find Delta E = En Upper - En Lower for n upper=2, n lower =1 and for n upper = 4,
The energy levels of a Helium Ion, He+, may be calculated from the Bohr Theory using z = 2 for the atomic number, En = -1312.04 Z2/n2 or En=-5248.16/n2 (kJ mol-1) for n=1, 2,3,.... Calculate the fir
What are the most important kinds of INTERmolecular forces present in each of the following substances
Determine the equilibrium constant for the following reaction at 298 K. SO3(g) + H2O(g) ? H2SO4(l) ?G° = -90.5 kJ
Calculate the of a solution prepared by mixing equal volumes of 0.21 methylamine (CH3NH2, Kb = 3.7 x 10^-4 ) and 0.61 M CH3NH3Cl.
How much heat is required to vaporize 18.5g of water at 100c. The heat of vaporization of water at 100c is 40.7kj/mole.
A cylinder contains 12.0l of air at a total pressure of 41.4psi and a temperature of 30c. How many moles of gas does the cylinder contain
Calculate ?Grxn at 298 K under the conditions shown below for the following reaction. SO3(g) + H2O(g) ? H2SO4(l) ?G°= -90.5 kJ P(SO3) = 0.20 atm, P(H2O) = 0.88 atm
A gaseous mixture containing 0.200 mol fraction of carbon tetrachloride (CCl4) and 0.800 mol fraction of dry air is initially at 68.0°C and 1169 mmHg. 1- If this mixture is cooled at a constant
When optically active B was treated with CrO3 in pyridine, an optically inactive sample of A was obtained. Heating A with hydrazine in base gave hydrocarbon C, which, when heated with alkaline KMnO4