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What is the specific heat of a substance that requires 124 J to raise temperature of 95.5 g from 20.0 degrees celsius to 25 degrees celsius?
Consider a molecule with spacing between two energy levels of 0.250 kJ mol-1. Calculate the wavelength and wavenumber of the photon that would be needed to lead to an excitation between these two levels.
A mixture of O2, CO2, and N2 has a total pressure of 697. torr. In this mixture the partial pressure of O2 is 143. torr and the partial pressure of CO2 is 197. torr. What is the partial pressure of the N2 (in torr)?
A beaker contains 100 grams of 0.50 M NaCl. If you transfer 50 grams of the solution to anouther beaker, what is the molarity of the solution remaining in the first beaker?
At 450 K the rate constant is 15.4 atm-1s-1. How much time (in s) is needed for NOCl originally at a partial pressure of 46 torr to decay to 25.8 torr?
At 0.0oC, if the volume of air is 2.9 mL and the pressure of the atmosphere that day is 675 mmHg, what is the number of moles of air?
Three gases (8.00 of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 degrees C, the total pressure in the container is 3.70 atm.
How do I determine the concentration of 2 separate acids in a solution of water if I know the overall pH of the solution? There exists both formic acid and acetic acid in a 1 liter solution of water. The overall solution pH is stated as 4.0 and it ..
A 29.20 g piece of iron and a 25.30 g piece of gold at 100.0 degree C were dropped into 980.0 mL of water at 15.65 degree C. The molar heat capcities of iron and gold are 25.19 J/(mol degree C) and 25.41 J/(mol degree C), respectively.
One can safely assume that the 3s- and 3p-orbitals will form molecular orbitals similar to those formed when 2s- and 2p-orbitals interact. According to molecular orbital theory,
When 0.490 kJ of heat is added to the gas, it expands and does 211 J of work on the surroundings. What is the value of delta H and delta E for this process?
Determine whether sodium monohydrogen phosphate (Na2HPO4) is neutral, basic, or acidic. First, what is its Ka when it acts as an acid? Second, what is its Kb when it acts as a base?
Identify the geometry of the iron(III) complex in water and the complex ions produced in the above reactions
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