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The diagram shows four states of a system, each with different internal energy, E.
(a)Which of the states of the system has the greatest internal energy?
(b) In terms of the ¢E values, write two expressions for the difference in internal energy between State A and State B.
(c) Write an expression for the difference in energy between State C and State D.
(d) Suppose there is another state of the system, State E, and that its energy relative to State A is ? E= ?E1 + ?E4 . Where would State E be on the diagram?
Describe the mathematical relationship between the number of scans acquired in a NMR experiments and the signal to noise ratio. Be precise.
4- A student measured the diameter of a sphere and determined the average value. His measyrements are 5.17cm , 5.16 cm cm and 5.17 cm if the diameter is 6.18cm what can be said about the student's results
Without consulting a periodic table write the grounds state electron configuration of the element having atomic number 83 and specify the group and the period where the element is found.
The simplest carbene known is methylene. The non-bonded electrons can be paired (singlet methylene) or unpaired (triplet methylene).
students performed acid-base titrations. Redox reactions can also be used in titrations. An example is the titration of ascorbic acid (H2C6H6O6) in lemon juice using triiodide (I3-). A starch indicator will turn the solution blue-black at the endp..
A chemist needs a buffer with a pH of 4.35. How many mLs of pure acetic acid (density=1.049 g/mL) must be added to 465 mL of 0.0941 M NaOH solution to obtain such a buffer
you have a stock solution of 14.8 m nh3. how many milliliters of this solution should you dilute to make 1000.0 ml of
A 130.0 mL sample of a solution that is 2.7×10?3 M in AgNO3 is mixed with a 230.0 mL sample of a solution that is 0.11 M in NaCN. After the solution reaches equilibrium, what concentration of Ag+ (aq) remains?
A solution made up of 8.25 g of caffeine and 100.0 mL of benzene (d=0.877 g/mL) freezes at 3.03 C. Pure benzene (Kf=5.10 C/m) freezes at 5.50 C. What are the simplest and molecular formulas for caffeine
A sample of helium gas initially at 37.0 °C, 785 torr and 2.00 L was heated to 58.0 °C while the volume expanded to 3.24 L. What is the final pressure in atm
Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the thermal efficiency of the cycle and (b) the mass flow rate of the steam.
consider a hydrogen atom in its ground state. what is the energy of its electron? consider the hydrogen atom in an
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