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The temperature of a sample of helium at 85 kPa is 37 degrees Celsius. If the volume of the gas remains constant, at what temperature (in Celsius) would the pressure of the gas be at 98 kilo Pascals?
Specific heat of ice: 2.09g*c Specific heat of liquid water: 4.18j/g*c Enthalpy of fusion: 334j/g Enthalpy of vaporization: 2250j/g
i in co2 the first excited vibrational level is 30 kjmol above the ground level. calculate the population in the first
The air is cooled as the water evaporates. How much water must be evaporated to cool the air in a room of dimensions 4.0 m x 5.0 m x 3.0 m by 20. C? Assume that the enthalpy of vaporization of water is the same as it is at 25 c.
If a laser operated on the n=5 to n=2 transition of a H atom, what wavelength in nm photon would be emitted? (E2= -82 kJ/mol, E1= -328 kJ/mol)
Calculate the kinetic energy of 2 kg of helium gas at 25 C. If this energy could be captured and used to accelerate a 1400.0 kg automobile, how fast would the car travel on a flat surface (ignoring friction)
What is the molarity of a solution containing 1.35 mol H2SO4 in 245 mL of solution
when the zinc coating on an iron can is scratched, rust does not form. use the activity series to explain why this happens.
Use the H NMR spectrum of the purified cyclic acetal to identify the major diastereomer From borohydride reduction. There are no minor diastereomers. Draw its structure including stereochemistry. Determine the ratio between major:minor.
Using a sample of ferrous ammonium sulfate hexahydrate of 0.5585 grams needs KMnO 4 solution of 21.45 ml to reach a pink endpoint then calculate what will be tha molarity of the KMnO 4 solution?
Calculate the theoretical yield for the bromination of both stilbenes and cinnamic acid, assuming the presence of excess pyridinium tribromide.
If 25.00 mL of 0.20 M HCl is titrated with 0.20 M NaOH, what is the pH of the solution after the addition of 20.00 mL of NaOH?
What is the activity coefficient of H in a solution containing 0.020 M HCl and 0.010 M Ca(ClO4)2? What is the pH of this solution
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