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A frictionless piston-cylinder device initially contains air at 200 kPa and 0.2 m3. At this state, a linear spring (F ∝ x) is touching the piston but exerts no force on it. The air is now heated to a final state of 0.5 m3 and 800 kPa. Determine (a) the total work done by the air and (b) the work done against the spring. Also, show the process on a P-v diagram.
Which of the following would act as a nonelectrolyte when dissolved in water. Select all that apply. a. NH4NO3
Calculate the potential of a zinc electrode immersed in 0.0100M in Zn(NH3)4 2+ and 0.25M in NH3 B4 for Zn(NH3)4 2+ is 7.76*10^8
Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water.) tf and tb?
The formula of a complex formed by a reaction such as M + nX = MXn can be determined by the method of continuous variations. The absorbances of a series of solutions of varying composition are measured at the wavelength at which the complex shows ..
To resolve an object in an electron microscope the wavelength of the electrons should be close to the diameter of the object. Explain what kinetic energy must the electrons have in order to resolve a protein molecule that is 8.60 nm in diameter
Calculate the standard enthalpy change for the reaction - energy of the emitted photon as well as the wavelength and frequency of electromagnetic radiation.
Question- In the recrystilization step of aspiring synthesis, why should you not add boiling H2O to the ethanol solution
Organic Chemistry-In the mass spectrum of butylbenzene, the base peak occurs at m/z
calculate pH at points between the start of titration and equvalence point: choose points so tht they will be more dense where change in pH is faster
Calculate the planar densities in ions per square nanometer on the (1 1 1) and (1 1 0) planes for (a) NiO and (b) NaCl. Ionic radii are Ni2+ = 0.078 nm and O2-=0.132nm, Na+=0.098nm, and Cl-=0.181nm
A 2.50 g sample of barium reacted completely with water. What is the equation for the reaction? How many milliliters of dry H2 evolved at 21oC and 748 mmHg?
One of the allotropes of sulfur is the orthorhombic form, formula of S8 (8 is a subscript), which is a brittle, yellow solid. It does not conduct electricity. This form is stable below 94.5 deg C. It dissolves more in nonpolar solvents.
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