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A first order reaction has an Arrhenius constant for the reaction is 9.4 x 1010 sec ^-1, and an activation energy of 64.4 kJ. At what temperature (in Celsius) is the rate constant equal to 0.472 sec^-1?
The specific heat capacity of solid copper metal is 0.385 J/g-K. How many joules of heat are needed to raise the temperature of a 1.55-kg block of copper from 33.0C to 77.5C?
What would the atom ratio of 206-Pb to238-U be in a uranium mineral from a rock that is 1.0× 10^9 years old? t1/2(238-U)= 4.5 × 10^9 yr.
Determine the partial pressure. Calculate the total pressure and volume in liters at STP of Nitrogen, Helium and Neon mixture.
To determine the freezing points of distilled water, 1m glucose, 1m NaCl, 1m CaCl2. Use the freezing point of the pure water as a baseline to determine deltaTf for each of the solutions
For each line in the hydrogen spectrum, how do you deduce n2 (the upper state) and n1 (lower state) and if you could record the absorption spectrum of hydrogen gas, what would it look like?
In the reaction below, 3.84 atm each of H2 and Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kc = 62.1, calculate the equilibrium pressure of HCl.
Consider 4 moles of a perfect gas with initial volume= 20dm^3, initial temp= 300K, and final volume= 60dm^3. What is the change in entropy for the system, surroundings, and total for the following processes:
A 0.0490 molal aqueous NaBr solution freezes at -0.173°C. What is its apparent percent dissociation in this solution? Kf = 1.86°C/m for water. NaBr -> Na+ + Br-
Which of the following ionic compounds has the largest lattice energy (i.e., the lattice energy most favorable to a stable lattice)?
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
Assume that O2(g) and H20(g) can be described by the van der Waals equation of state. Decide which between 1 mole of O2 and H20 has the highest pressure at the same value of T and V
Using data from the thermodynamic quantites at 298.15 K, calculate delta H^degree, delta S^degree, and delta G^degree at 298K for each reaction. Show that delta G^degree = delta H^degree - T(deltaS^degree)
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