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Helium gas at 104.0 kPa and 372.0 K is located within a cylinder with a piston. Initially the gas occupies 0.3000 m3. While a constant force, F, is applied to the end of the piston so that the pressure inside the cylinder is held constant at 104.0 kPa, 6610.0 J of heat is transferred to the helium gas. The specific enthalpy of helium gas is given by the approximate relation: H (kJ/mol) = 0.0208T(K) A) What is the final temperature of the helium gas?
B) What is the final volume of the helium gas?
C) What is the work done by the gas?
D) What is the change of internal energy of the system?
How many molecules are in 22.41 L of an ideal gas at STP? Remember the answer is supposed to be in molecules
We had to do an experiment that depolymerized PET into terephthalic acid and ethylene glycol using 1-pentanol and KOH. One of the post-lab questions is as follows:
The pH of the HF solution before titrant is added is 1.88 and 43.948 mL of titrant are required to reach the equivalence point.
Calculate the dilution factor for all 7 test test tubes. Show all work/calculations. 0.1 ml of the solution from the serial dilution 10^-4, 10^-5 and 10^-6 was pipetted onto three separate agar plates.
Which of the following compounds is expected to have the highest boiling point? octane, 2,3-dimethylhexane, 2,2,3,3-tetramethylbutane
Calculate the uncertainty (in nm) in the position of an electron with the velocity of 2.00x103 m/s (the velocity is the same as in the preceding problem) and the uncertainty in the velocity is 1%. (2 significant figures are plenty).
Calculate Qsp for calcium fluoride (Ksp=3.9x10^-11) when 195.0 mL of a 0.00780 M solution of Ca(NO3)2 is added to 175.0 mL of a 0.00740 M solution of KF
A pound of coffee beans yields 53 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1 of coffee beans?
Explain why the H-H distances determined for coordinated dihydrogen by X-ray diffraction are always significantly shorter than those
What is the atomic radius of a Cs atom( either in pm or A) . State assumptions used
Explain the general idea of the LCAO-MO method.
At what temperature is the change in entropy for the reaction equal to the change in entropy for the surroundings?
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