August 30, 2016

Posts by Mark

Total # Posts: 1,536

AP U.S. History 1920's immigration
Fu(k schooll
February 21, 2007

Having a hard time understanding "representative particles". ie. which are atoms, compounds etc. For example, what is the representative particle for sodium fluoride? carbon monoxide? Atoms are the smallest unit of an element. Molecules are composed of two or more ...
February 20, 2007

Chemistry and Balancing
Mr Pursley. i was wondering if you would be kind enough to explain to me the process of balancing equations I undestand some of the rules but I continue, to make simple mistakes. Would you kindly offer some assistance please, via email. To help me get through this plateau. ...
February 14, 2007

What are the most significant similarities between the Chinese American and Japanese American [cultural] experiences? What are the differences? Please refer to this post, recently answered: http://www.jiskha.com/display.cgi?id=1170193455 =)
February 8, 2007

What type of bonding holds the compound, sodium cyanide, together? The CN bond is covalent. The Na to CN bond is, in most minds, an ionic bond. The electronegativity of C is about 2.1 and that of Na is about 1; therefore, with a difference of about 1 it is polar covalent. ...
February 7, 2007

Given assumed valencies: H=1, N=3, & C=4 i am now required to draw the structural formulae of HYDROGEN CYANIDE and CYANOGEN. H:C:::N is the Lewis electron dot structure. If you want to use "sticks" as a bond instead of two electrons, one stick stands for two ...
February 7, 2007

Pleas check the following for me... "A drop of oil (vol 0.051cm ) is released on to the surface of a pond where it covesr an area of 40cm2. Assume that the oil film has a uniform thickness equal to the diameter of an oil molecule. Calculate the diameter of an oil molecule...
February 6, 2007

0.0351 is the actual answer.
February 5, 2007

I am given a list of apparatus, liquids & solids and am trying to convert aluminium selenide from solid to geseous states does the following sound correct?... Aluminum selenide (in the round-bottomed flask) reacts with water (coming from addition funnel which is connected via ...
February 4, 2007

What is the true meaning of dimerize and trimerize - neither of these words are found in any dictionary and hence, are not actually in use: scientific jargon perhaps, but not proper English. Also, if it is in proper use, in the UK, is it spelt dimerise & trimerise ending in SE...
February 4, 2007

How would I explain how I arrived at the following EF in words?
February 3, 2007

help me unscramble this word
January 25, 2007

research to determine if the group colonized or if it immigrated to the United States. Did the group face prejudice, segregation, racism or any combination of the three? If so, how and why? Include your research findings in your essay. You may search through chapters of the ...
January 24, 2007

Imagine yourself as a current member of that group, and consider the question, “Would I want to immigrate to the United States, and why?” Think about what opinion you would have of the immigration process, including naturalization, the costs, fingerprinting, etc. ...
January 24, 2007

Should United States government policy favor certain kinds of immigrants? o Should [citizenship] preference be given to the neediest applicants? The most talented? The most oppressed? The richest? o Should applications from certain countries be given priority? Please let us ...
January 24, 2007

What are the formulas for lithium bromide? http://www.webelements.com/webelements/compounds/text/Li/Br1Li1-7550358.html where can i find the formula for cupric nitride,and magnesium chloride also. and what are the formulas for the compounds formed by Fe2+,Cl- how do you figure...
January 7, 2007

One model for the population P of bacteria in a sample after t days is given by P(t) = 1000 - 19.75t + 20t² - 1/3t³ Whoops accidently hit post question a)what type of function is P(t) b)when is the bacteria population increasing c) When is it decreasing
December 29, 2006

i lied i dont know
December 11, 2006

SCIENCE.... just need a web
Do you know a website that I could find something about humidity? THANKS A LOT !!!! What exactly do you need to know about humidity? type in "humidity", except more specific, on google. http://en.wikipedia.org/wiki/Help:Contents
December 6, 2006

What has a physical and chemical change at the same time, apart from a candle burning wood.
December 5, 2006

Math Word Problem
A turtle crawls a hill 2 feet and slides back 1 foot each attempt. How many attempts will it take to reach the 14 foot hill? Please explain. Thanks
December 4, 2006

biology: chitinase
In an experiment I did, Serratia marcescens grew really well in the Sherry cooking wine I used. Is this because the chitinase that the Serratia marcescens producing binds the carbs with the alcohol?
December 1, 2006

egg weight
Anyone know the weight of an egg. I need it to do some calculations for my science project. IT depends on the size of the egg. Eggs vary from 35 grams (small egg) to 75 grams (AA large).
November 30, 2006

How do I use pythagorean theorem if I already know what c is, but I am missing one of the legs? If you know the length of one of the legs, a (besides the hypotenuse, c), then use b^2 = c^2 - a^2 and solve for the unknown leg length, b. This only works IF it is a right triangle.
November 28, 2006

Social Studies . HELP!!!
What are some foods in Jamestown? Thanks! Are you asking about present Jamestown, Virginia? Or about the colony of Jamestown in 1607? Please clarify your question and we'll be glad to help you find your answer. i need to know all you know about jamestown or at least where ...
November 19, 2006

solve (3,5) and (9,8)
November 3, 2006

why does inoinzation energy tend to decrease from top to bottom within a group? i'm not sure, but i think it has something to do with the size of the element The electrons involved in ionization, that is, the outermost electrons, are farther away from the nucleus, and are ...
October 31, 2006

what is n! ? It stands for n factorial. For example, if n = 3, then 3! is 1 x 2 x 3 = ??
October 31, 2006

the radius of a circle when the numeric values of the circumference and the area are equal Start with what you know. If you know the formula the area of a circle, and the formula for the circumference of a circle, then you can set them equal to each other...from there you ...
October 31, 2006

only cube that is one less than a square. answer is from 1-31 actually, wouldn't any fraction's cube be less than its square? i.e.: (1/2)^3 = 1/8 (1/2)^2 = 1/4 1/8 < 1/4 julie the answer is from 1 to 31 not a fraction 8 its cubed root is 2 and 3 squared = 9
October 30, 2006

what is 45 times 20 900 900 Do you have a calculator? Do you know how to do multiplication by hand? Tell us what you don't understand. You need to learn how to do this instead of relying on someone to give you the answer.
October 24, 2006

where is the oldest surviving parliament?
The roots of parliaments are many and diverse. The oldest surviving parliament is generally regarded as being the Althing in Iceland, but a break in its function in the 19th century means that the longest continuous parliament is the Tynwald of the Isle of Man. Among the ...
October 12, 2006

Hey, I have to write a 200-250 word paper on my life in the future as a famous person. I am in a magazine, and i have to write about how my life, career, and family are. I have recieved help from others, and I was hoping someone could double-check my work before I turn it in ...
September 27, 2006

solve for x ac+x=xy have all terms with x on one side ac=xy-x take x as common factor ac=x(y-1) now solve for x 25a^2 - 9b^4 can u please help me solve and check these equations
September 26, 2006

Hey, I have to write a 200-250 word paper on my life in the future as a famous person. I am in a magazine, and i have to write about how my life, career, and family are. I would appreciate it if someone could proofread my Spanish. Thanks! SPANISH: La revista de prensa rosa, In...
September 26, 2006

what is the factor of x^4-x^2+16 and x^4-7x^2y^2+9y^4 Replace x^2 with b. This would make x^2 turn into b and x^4 turn into b^2.
July 28, 2006

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