malware is often embedded in links or documents transmitted to intended victims and activated when links are followed or documents opened . what guidelines do you recommend following to prevent from being a victim of such an attack?
In: Computer Science
MgSO4•7H2O is an example of hydrate, a substance that has fixed mass percent of water in the compound. Calculate the mass percent (%) composition of water in MgSO4•7H2O. (show your work.)
In: Chemistry
Read the Haas and Whited (2017) review paper on limb regeneration and answer one of the three following questions. A good answer to this question might require you to look up papers cited in this review. You can search for articles on scholar.google.com, and a great number can be downloaded on campus. If you do use another paper, please provide a citation.
1. Describe what you feel is the critical step in
the morphological development of the regenerated limb. Why is it
the critical one?
2. Choose one of the genes mentioned and explain what
it does to aid in limb regeneration.
3. Choose one of the techniques used to determine
candidate genes and describe how it works and why it is useful.
Choices are RNASeq, Transcriptomics, Expressed Sequence
Tags/Microarray.
Answer each part in 3-5 sentences.
In: Anatomy and Physiology
How did the major commercial centers in the Afro-Eurasian world foster commercial exchange and establish a new commercial class?
In: Economics
You are a studen in Organic Chemsitry lab and you are tasked with the job to make 202 ppm solution of Rhodamine B (MM = 479.02 g/mol). How many moles of dye do you need to add to a 250 mL beaker of water to prepare this solution?
In: Chemistry
A proud deep-sea fisherman hangs a 61.0-kg fish from an ideal spring having negligible mass. The fish stretches the spring 0.130 m.
(a) Find the force constant of the spring.
N/m
The fish is now pulled down 4.90 cm and released.
(b) What is the period of oscillation of the fish?
s
(c) What is the maximum speed it will reach?
m/s
In: Physics
The automobile fuel called E85 consists of 85 % ethanol and 15 % gasoline. E85 can be used in so-called "flex-fuel" vehicles (FFVs), which can use gasoline, ethanol, or a mix as fuels. Assume that gasoline consists of a mixture of octanes (different isomers of C8H18), that the average heat of combustion of C8H18(l) is 5400 kJ/mol, and that gasoline has an average density of 0.70 g/mL. The density of ethanol is 0.79 g/mL.
For Part A, start with the given L of gasoline and use the density of the gasoline as well as the molar mass of C8H18 to determine the moles of gasoline. Once you have found the moles of gasoline you will use the provided heat of combustion to determine the energy produced. You do not need to use Appendix C because you are using the provided heat of combustion.
For Part B, do the same with the ethanol. You will use the heat of combustion for ethanol from the extra credit homework problem 5.79. If you did not do the that homework problem, you will need to write the balanced equation for the combustion of ethanol paying attention to the phases. Use the phase of gas for the water. Then calculate the heat of the combustion reaction from the heats of formation in Table C.
For Part C, you will need to use a weighted average. This is the same formula we used to determine the average atomic mass.
For Part D, you are starting with the given gallons of gasoline and will need to use the heat of combustion produced for the given liters of gasoline as a conversion factor to determine the energy produced from the given gallons. The heat of combustion produced from the liters of gasoline is from Part A. Now take the energy produced from the gallons of gas and use that as the given. Using the heat of combustion produced for the liters of E85 from Part C, determine the gallons of E85 necessary to produce that much energy.
For Part E, you will use the gallons of gasoline
A)By using the information given as well as data in Appendix C, calculate the energy produced by combustion of 2.0 L of gasoline
B)By using the information given as well as data in Appendix C, compare the energy produced by combustion of 2.0 L of ethanol. Consider that water is in the gaseous state.
c)Assume that the density and heat of combustion of E85 can be obtained by using 85 % of the values for ethanol and 15 % of the values for gasoline. How much energy could be released by the combustion of 2.0 L of E85?
E)If gasoline costs $ 3.10 per gallon in the United States, what is the break-even price per gallon of E85 if the same amount of energy is to be delivered?
In: Chemistry
Devon Bishop, age 45, is single. He lives at 1507 Rose Lane, Albuquerque, NM 87131. His Social Security number is 111-11-1112. Devon does not want $3 to go to the Presidential Election Campaign Fund.
Devon's wife, Ariane, passed away in 2014. Devon's son, Tom, who is age 18, resides with Devon. Tom's Social Security number is 123-45-6788.
Devon owns a sole proprietorship for which he uses the accrual method of accounting and maintains no inventory. His revenues and expenses for 2018 are as follows:
|
Sales revenue |
$740,000 |
|
Cost of goods sold (based on purchases for the year) |
405,000 |
|
Salary expense |
88,000 |
|
Rent expense |
30,000 |
|
Utilities |
8,000 |
|
Telephone |
6,500 |
|
Advertising |
4,000 |
|
Bad debts |
5,000 |
|
Depreciation* |
21,000 |
|
Health insurance** |
26,000 |
|
Accounting and legal fees |
7,000 |
|
Supplies |
1,000 |
*New office equipment ($21,000); Devon uses the immediate expense election.
** $18,000 for employees and $8,000 for Devon.
Other income received by Devon includes the following:
|
Dividend income (qualified dividends): |
|
|
Swan, Inc. |
$10,000 |
|
Wren, Inc. |
2,000 |
|
Interest income: |
|
|
First National Bank |
11,000 |
|
Second City Bank |
2,500 |
|
County of Santa Fe, NM bonds |
17,000 |
During the year, Devon and his sole proprietorship had the following property transactions:
Devon's potential itemized deductions, exclusive of the aforementioned information, are as follows:
|
Medical expenses (before the 7.5% floor) |
$9,500 |
|
Property taxes on residence |
5,800 |
|
State income taxes |
4,000 |
|
Charitable contributions |
10,000 |
|
Mortgage interest on residence (First National Bank) |
9,900 |
|
Sales taxes paid |
5,000 |
During the year, Devon makes estimated Federal income tax payments of $35,000.
Required:
Compute Devon's lowest net tax payable or refund due for 2018 by providing the information requested for Forms 1040, 4562, 8824, and 8949 as well as Schedules A, B, D, SE. Assume that he makes any available elections that will reduce the tax.
When computing the tax liability, do not round your immediate calculations. If required round your final answers to the nearest dollar.
In: Accounting
Choose a stressor you are experiencing. Is it positive or negative? Ambient or cultural? Chronic, acute or anticipatory? Do you experience physical symptoms or other effects? What changes can you make to help you cope
In: Psychology
A solution containing 28.60 mg of an unknown protein per 29.0 mL solution was found to have an osmotic pressure of 3.80 torr at 15 ∘C. What is the molar mass of the protein?
Please show details on how to get to the answer:
| Mmol = | 4660 | g/mol |
In: Chemistry
In: Economics
( 1 ) What were the critical historic events ( or policy changes ) that propelled ( changed ) the former "Communist China" into the "modern China" as we know it by now? ( From massive famine to World's #2 economy ).
Give specific examples ( events ).
In: Economics
Q5) Explain: A) why we see the sky is blue? B) why we see the Sun red at Sunset?
Q6) Explain: why when we rotate a polarized sun glasses looking at the reflection from a non-metallic surface, we can almost block all the reflection.
In: Physics
Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 5.70 kg and m2 = 11.40 kg, what value of f will reduce the acceleration of the system by 50%?
In: Physics
6. Describe the general tissue structure that makes up the main body membranes. a). Describe the relationship of these tissues in the function and structure of serous and mucous membranes.
In: Biology