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Consider the titration of 44.2mL of 0.240M HF with 0.180 M NaOH . Calculate the at each of the following points. A) How many milliliters of base are required to reach the equivalence point
Draw the structures of the two carbocation intermediates that might form during the reaction of the alkene (below) with HCl. If the two carbocations differ in stability,
30 mL of 0.25 M acetic acid are titrated with 0.05 M KOH. What is the pH after addition of 75 mL KOH
Express the following population estimates for the year 2010 in nanomoles of people. Asia, 4.15 billion people = _______ nmol The world, 6.83 billion people
Calculate the quantity of energy produced per mole of -235 (atomic mass = 235.043922 ) for the neutron-induced fission of -235 to produce -137 (atomic mass = 136.9253 ) and -97 (atomic mass = 96.910
Calculate q, w, ?E, and ?H for the process in which 80.0 g of nitrous oxide gas (N2O) is cooled from 162°C to 53°C at constant pressure of 5.00 atm. (See Table 9.1.) N2O Cv J/K mol = 30.38 C
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm.
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
The mixture of hot iron and aluminum is then dropped into 95.7 g of water at 20.0°C. Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
30 mL of 0.25 M acetic acid are titrated with 0.05 M KOH. What is the volume of KOH needed to reach the equivalence point. A. 0.15 mL B. 150 L C. 150 mL D. 1.5 L
Calculate the specific heat capacity of copper, assuming that all the heat lost by the copper is gained by the water. Provide the Answer In: J/g·°C
Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 60. cubic cm. If the combustion of this mixture releases 1401
Each carbon-oxygen bond is somewhere between a single and a double bond. 3.Each oxygen atom has a double bond 50% of the time 4. The actual structure of formate is an average of the two resonance fo
A reaction has a standard free-energy change of -14.00 kJ mol-1 (-3.346 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
The standard free energy of activation of one reaction A is 85.50 kJ mol-1 (20.43 kcal mol-1). The standard free energy of activation of another reaction B is 78.70 kJ mol-1 (18.81 kcal mol-1).
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 18.0 g to 100°C in boiling water and then dropped the h
Which MO is the HOMO and which is the LUMO in the excited state 5. How many nodes does the highest-energy molecular orbital of 1,3,5,7-octatetraene have between the nuclei
Calculate the work done by the gas if it expands against a constant pressure of 5 atm. -Answer is -1.14x10^4 J but just need to know how to get there.
We place 1.32 mol PCl5 in a 1.0 L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask
Calculate the final molarity of acetate anion in the solution. You can assume the volume of the solution doesn't change when the ammonium acetate is dissolved in it.
What is the role of dichloromethane in an oxidation reaction where a cyclohexanol is oxidized by bleach into a cyclohexanone
Write the condensed electron configurations for the following atoms, using the appropriate noble-gas core abbreviations. In order of increasing orbital energy. a) U b) Pb
The standard free energy of activation of another reaction B is 78.70 kJ mol-1 (18.81 kcal mol-1). Assume a temperature of 298 K and 1 M concentration. By what factor is one reaction faster than the
Butadiene can undergo the following reaction to form a dimer (two butadiene molecules hooked together). 2C4H8(g) > C8H12(g) The half-life for the reaction at a given temperature is 5.92*10^-2 sec
Identify the group of elements that corresponds to the following generalized electron configuration