Consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus. How much energy is released in this reaction?(The mass of the deuterium nucleus is 2.01355u) MeV
In: Physics
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.20 gallons, what is the boiling point of the solution? Make the following assumptions in your calculation: at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is non-ionizing and non-volatile, and that the pressure remains constant at 1.00 atm. Also, you\'ll need to look up the boiling-point elevation constant for water.
In: Chemistry
John Doe has just been offered a home loan towards purchase of house that is being sold for $250,000.He will be required to make a 5% down payment, as well as mortgage processing fees and closing costs of $4,000. The loan has to be paid off in monthly payments over a 30-year period at a fixed interest rate of 4% per year compounded monthly. He will also be required to pay an additional $200 per month as mortgage insurance. Using Excel, answer the following questions:(PLEASE SHOW FORMULA)
The monthly mortgage payment is _______
The total monthly payment is _________
The nominal APR is________
The effective APR is_________
Over the 30-year period, the total amount of interest paid on the loan is__________
The interest amount in the month 69 payment is __________
The principal amount in the month 69 payment is _________
The balance on the loan immediately after making the payment at the end of month 69 is___________
In: Finance
Consider the reaction:
2NO(g)+Br2(g)⇌2NOBr(g)
Kp=28.4 at 298 K
In a reaction mixture at equilibrium, the partial pressure of NO is
105 torr and that of Br2 is 132 torr .
What is the partial pressure of NOBr in this mixture?
In: Chemistry
These post lab questions are regarding the spectroscopic determination of an equilibrium constant of an FeSCN complex where the wavelength was set at 447 nm. These are general questions about the effects on calculations each scenario would have... Sooooo
1. What would have happened to your absorbance reading and to your calculations of Keq if the spectrophotometer had been set at 520 nm rather then 447 nm? ) Clearly explain
2. How would your calculations of the concentration of FeSCN been affected if the cuvette had a 1.5 path length rather than a 1.0 cm path length you were told to use.
3. Finally, Would your equilbirium constant results been affected if you had swapped the volumes used of Fe and SCN?
In: Chemistry
Organic chemistry lab- How is the purity of the recrystallized material determined?
In: Chemistry
Differentiate between resources are not used effectively and they are not used sustainably.
In: Economics
I know that its not three and 4 but I can't figure out the answer to this question.
Which reaction is most likely to have a positive ΔSsys?
Which reaction is most likely to have a positive ?
| 3O2(g)→2O3(g) | |
| SiO2(s)+3C(s)→SiC(s)+2CO(g) | |
| 6CO2(g)+6H2O(g)→C6H12O6(s)+6O2(g) | |
| 3NO2(g)+H2O(l)→2HNO3(l)+NO(g) |
In: Chemistry
In Chapter 8 of his book, Osberg writes, “When robots can make the robots that can do most of our current jobs, the “Age of Abundance” will be technically possible. It will then be technically feasible for all people to enjoy a full material standard of living and also enjoy many more hours of leisure in which to develop the full potential of their unique personalities.”
While this sounds like the dawning of a utopia, what are the challenges such technological improvement will have on our ability to ensure equitable prosperity? Discuss.
In: Economics
The temp and number density in a typical Planetary nebula are 3,500 K and 2.3*109 m-3
a. Calculate the pressure in Pa in a Planetary nebula
b. Calculate the Mean free path in the nebula if the particles have a diameter of 0.20 nm
c. calculate the mean speed of a hydrogen atom under the nebula conditions above
d. Calculate the collision density for a hydrogen atom in the nebula.
In: Chemistry
I calculated these solutions myself but I have doubt in my answers, I'd appreciate some confirmation.
a. The U.S. average yield of corn is 153 bushels/acre.
Does this agree with the 2009 international average as
defined by the United Nation
In: Physics
Two point charges Q1 = +4.00 nC and
Q2 = −2.70 nC
are separated by 55.0 cm.
(a) What is the electric potential at a point midway between the
charges?
V
(b) What is the potential energy of the pair of charges?
J
What is the significance of the algebraic sign of your answer?
Positive work must be done to separate the charges.Negative work must be done to separate the charges.
In: Physics
In a experiment we did with electromagnets, we used only one battery with a certain voltage and didn't change it out. So did the current stay constant if we used the same battery because the voltage stayed constant????
The purpose of the experiment was to manipulate the number of winds to increase the magnetic field strength.
Thanks
In: Physics
A 63.0-? resistor is connected in parallel with a 115.0-? resistor. This parallel group is connected in series with a 17.0-? resistor. The total combination is connected across a 15.0-V battery.
(a) Find the current in the 115.0-? resistor.
A
(b) Find the power dissipated in the 115.0-? resistor.
W
In: Physics
One of the key ways a firm may be a monopoly is through patent protection. Perhaps many of you heard of the infamous case of Martin Shkreli's price hike of a drug called Daraprim from $12.50 to $750 almost overnight (Links to an external site.). Specifically answer this prompt: Should there be a price ceiling placed on patented products? Why or why not? If so, how exactly would you set the price ceiling? Consider the incentives that such a policy may have in the short and long term.
A yes/no/maybe answer to the question with an explanation of your reasoning.Include a detailed and accurate application of one or more of the concepts: patent, legal barriers to entry, economic profit in the short run and long run.
In: Economics