Questions
Explain how to calculate thermodynamic properties for a gas under adiabatic conditions Define the Third Law...
Explain how to calculate thermodynamic properties for a gas under adiabatic conditions
Define the Third Law of Thermodynamics.
Use tabulated values of absolute entropies to calculate the entropy change for a reaction.
Recognize that all substances, even elements in their standard state, have absolute entropies that are greater than zero at temperatures above absolute zero.
Write the thermodynamic conditions required for a spontaneous change both in terms of entropy and Gibbs energy.
Write the mathematical definitions of Gibbs energy and how to calculate it these properties for a system. And explain how these two variables differ in what they measure.
In: Chemistry
Italian national debt to GDP is expected to pass 150% in 2020, up from 134% last...
Italian national debt to GDP is expected to pass 150% in 2020, up from 134% last year. Furthermore, fund managers are getting increasingly more reluctant to buy relatively high-yielding Italian bonds despite European Central Bank’s (ECB’s) backing.
What was the state of the Italian economy in 2019? Use the information given in the question and basic macro indicators to explain.
How has the Covid-19 outbreak affected the Italian economy? Explain how the macro indicators you have chosen at part a got affected as a result of the pandemic.
In: Economics
1. Why is business execution so difficult on larger initiatives? Explain in detail 2. These are...
1. Why is business execution so difficult on larger initiatives? Explain in detail
2. These are 5 factors in successful business
execution: competencies, processes, disciplines, attitudes, and
behaviors. Choose three 3 that you believe are the most important
and explain why.
In: Operations Management
i. Essay question 1. List the factors that affect currency call option premiums and briefly explain...
i. Essay question
1. List the factors that affect currency call option premiums and briefly explain the relationship that exists for each
2. Explain the impact of a weak home currency on the home economy, other things being equal?
3. Explain (in detail) why PPP does not hold.
4. Explain when locational arbitrage is possible?
In: Finance
To see if police are more likely to pull over certain color cars, researchers gathered 28...
To see if police are more likely to pull over certain color cars, researchers gathered 28 Volkswagen Jettas and had them painted one of four colors: red, grey, black, and white. Participants drove the cars around for a month and recorded the number of traffic stops that occurred for each color. The results are below.
∑X2 = 2030
Red Cars: M = 12, T = 84, SS = 70, n = 7
Grey Cars: M = 4, T = 28, SS = 35, n = 7
Black Cars: M = 8, T = 56, SS = 63, n = 7
White Cars: M = 6, T = 42, SS = 42, n = 7
1.Specify the null and alternative hypotheses that car color affected the number of traffic stops.
2. Report the SS-Total, the SS-Within, and the SS-Between of an ANOVA
3. Report the MS-Within, the MS-Between, and the F-ratio of an ANOVA.
4. Using alpha = .01, report your decision about the impact of car color on traffic stops.
In: Statistics and Probability
The energy level diagram of the hydrogen atom is shown the figure below
The energy level diagram of the hydrogen atom is shown the figure below. An atom generally has an electron in a given energy level, however, a transition may occur if the atom absorbs or emits a photon, or particle of light.
Note: The energy of a photon can be written as \(E_{v}=h c / \lambda\) and the constants \(h c=1240 \mathrm{eV}-\mathrm{nm}\).
1. In the Bohr model of the atom, energy is radiated when
A. an electron falls from an outer energy level to an inner level
B. an electron is stripped from an atom
C. an ion is formed
D. light shines on an atom
2. The \(n=3\) to 2 transition corresponds to the first of many spectroscopic lines of the
A. Balmer series
B. Lyman series
C. Paschen series
D. none of the above
3. What is the wavelength of light corresponding to a transition from the \(n=3\) to 2 state?
A. \(1240 \mathrm{~nm}\)
B. \(656 \mathrm{~nm}\)
C. \(122 \mathrm{~nm}\)
D. \(103 \mathrm{~nm}\)
E. \(91 \mathrm{~nm}\)
4. If a hydrogen atom is initially in the \(\mathrm{n}=3\) state, which of the following photon emission energies are possible?
A. \(1.9 \mathrm{eV}\) only
B. \(10.2 \mathrm{eV}\) only
C. \(12.0 \mathrm{eV}\) only
D. \(1.910 .2\), and \(12.1 \mathrm{eV}\)
E. \(1.9,10.2\), and \(13.6 \mathrm{eV}\)
5. The second line of the Balmer series would correspond to what transition?
A. \(n=2\) to 1
B. \(n=3\) to 1
C. \(n=3\) to 2
D. \(n=4\) to 2
6. The color of the light emitted in the \(n=3\) to 2 transition is
A. red
B. blue-green
C. blue
D. violet
E. ultra-violet
7. What is the smallest energy an aborbed photon must have to boost the hydrogen atom in its ground state to an excited state?
A. \(3.4 \mathrm{eV}\)
B. \(10.2 \mathrm{eV}\)
C. \(13.6 \mathrm{eV}\)
D. There is no smallest energy.
8. A hydrogen atom in its ground state absorbs a photon and ends up in the excited state corresponding to \(n=3 .\) What can be concluded about the photon?
A. The photon had an energy of \(1.51 \mathrm{eV}\)
B. The photon had an energy of \(3.4 \mathrm{eV}\)
C. The photon had an energy of \(10.2 \mathrm{eV}\).
D. The photon had an energy of \(12.1 \mathrm{eV}\).
9. What is the energy required to ionize a hydrogen atom? Note: The ionization energy is the energy required to remove an electron in the ground state entirely from the atom.
A. \(1.8 \mathrm{eV}\)
B. \(10.2 \mathrm{eV}\)
C. \(12.0 \mathrm{eV}\)
D. \(13.6 \mathrm{eV}\)
E. not enough information given
10. Which scientist is credited with discovering absorption lines in solar spectrum using a diffraction grating.
A. Rutherford
B. Balmer
C. Rydberg
D. Fraunhofer
E. Bohr
In: Physics
Suppose we have 3 cards identical in form except that both sides of the first card...
Suppose we have 3 cards identical in form except that both sides of the first card are colord red, both sides of the second card are colored black and one side of the third card is colored red and the other side is black. The three cards are mixed up in a hat, and 1 card is randomly selected and put on the ground. If the upper side of the chosen card is colored red, what is the probability that the other side is colored black?
In: Math
The human eye is most sensitive over the same wavelength range at which the Sun emits...
The human eye is most sensitive over the same wavelength range at which the Sun emits the greatest intensity of radiation. The Sun is a G-type star; see Table 17.1 in Section 17.2 for this classification scheme.
Suppose creatures were to evolve on a planet orbiting a star somewhat hotter than the Sun, let’s say an average F-type star. Let’s also assume that the atmospheric properties of their planet are the same as we find on earth today. To what wavelength ranges, approximately, do you think their vision would most likely be sensitive to? Explain your reasoning. For full credit, you should explore at least one resource besides your textbook. Be sure to cite references used.
In: Physics
We discussed numerous times the importance of identifying shocks to money demand. In particular, we argued...
We discussed numerous times the importance of identifying shocks
to money demand. In particular, we argued that the policy
implications of shocks to money demand differ based on whether the
shock to money demand was real or portfolio.
a) (5 points) Let us consider a portfolio shock that increases
money demand, say due to non-monetary assets becoming riskier and
less liquid. Draw a real money demand and real money supply diagram
locating the initial equilibrium point as point A and then locate
the new equilibrium, assuming the Fed did nothing as point B.
Employing our general equilibrium framework, what would happen to
output in the short run and why? Be specific.
A correct and completely labeled diagram is worth 10 points
b) (5 points) Now comment on what would happen to the general price
level and why in the long run. Is this long run result desirable or
not? Please explain in detail (hint: its a central banking
nightmare!). Feel free to use the Fisher equation to support your
argument.
c) (5 points) Now connect this portfolio shock to the quantity
theory of money in percent change form. In particular, given the
increase in money demand due to the portfolio shock as outlined
above, what are the implications on the growth rate of the velocity
of money? Using the quantity theory of money in percent change
form, what is likely to happen if the Fed does nothing (i.e., does
not accommodate the shock to money demand). Assume we are in a
Classical world so that output growth is unaffected by the
portfolio shock. Is your answer similar or different than your
answer in part b?
d) (5 points) We now consider the appropriate response of the
Federal Reserve. Referring to the quantity theory of money in
percent change form, explain what the Fed should do and why. Locate
this as point C on your diagram.
In: Economics
Complete the chart below. DNA mRNA 5 ’
Complete the chart below.
DNA mRNA
5 ’ 3’
T --
T --
A --
C ---
G ---
G ---
C ---
A --
T --
3’ 5’
Re-state the mRNA strand, write it in the 5’ to 3’ direction. Answer the following questions.
mRNA strand: 5’ __________________________ 3’
8. What is the first codon on the mRNA strand?
9. What is the anticodon for the tRNA at the P site?
10. What amino acid is this tRNA bringing?
11. What is the second codon on the mRNA strand?
12. What is the anticodon for the tRNA at the A site?
13. What amino acid is this tRNA bringing?
14. What forms between the two amino acids? Use the exact name of the union.
15. What is the third codon on the mRNA strand?
16. What is the anti-codon for the tRNA that will bind to the A site? Explain your answer.
17. What is the amino acid sequence of your peptide? Include STOP in your sequence.
18. How many kinds of codons exist in the Universal Code?
19. How many codons actually code for an amino acid?
20. What do the others code for?
21. How many different kinds of amino acids are coded for in the Universal Code?
In: Biology