Saturday
November 29, 2014

Posts by LILY


Total # Posts: 1,151

ap chem
calculate the enthalpy of formationof solid MgOH2, given the following data: 2Mg(s) + O2(g)-> 2MgO(s) heat:-1203.6 Mg OH2(s) -> MgO(s) +H2O(l) heat: 37.1 2H2(g)+ O2(g) -> 2H2O(l) heat: -571.7 what equation would they want the three equations to develop into and which ...
October 4, 2007

Social Studies
fill in the blank: giovanni Belzoni was a strongman and an blank who sent to egypt to recover the ancient statue of blanety blank
October 4, 2007

PHYSICS
thank you SO much, i got them all right in the first try! the answer to question c is "need more information"
September 30, 2007

PHYSICS
This is what i reasoned: a) if block is moving up the ramp, it means that tension is greater than the sin of mg. if T was half of mg, that means the speed decreases up the ramp because the T force is less. b) it would increase. i dont understand what the 30 deg has to do with ...
September 30, 2007

PHYSICS
A mass on a frictinless inclined ramp is connected to a rope with tension T. Complete the senteces with correct selection: -increases -decreases -stays the same a) If the block is moving up the ramp and theta=30 deg, its speed initally _________ if T=(mg)/2 b) If the block is ...
September 30, 2007

Physics
A Block weighing 72.2 N rests on a plane inclined at 20.0 deg. to the horizontal. The coefficients of static and kinetic friction are 0.22 and 0.12 resp. What is the minimum magnitude of F that will start the block moving up the plane? (I also got 9,74 N for this.. but wrong ...
September 29, 2007

ap chem
Under constant-volume conditions the heat of combustion of glucose is 15.57 kJ/g. A 2.500g sample of glucose is burned in a bomb calorimeter. The temperature of the calorimeter increses from 20.55 C to 23.25 C. What is the total heat capacity of the calorimeter? Which ...
September 26, 2007

stats
A soft drink vending machine is supposed to fill cups with pop. The cups hold exactly 8 oz of liquid. Suppose the actual amount dispensed by the machine follows a normal distribution with mean 7 oz. If it is found that exactly 4 percent of the cups overflow, what is the ...
September 24, 2007

Statistics
A soft drink vending machine is supposed to fill cups with pop. The cups hold exactly 8 oz of liquid. Suppose the actual amount dispensed by the machine follows a normal distribution with mean 7 oz. If it is found that exactly 4 percent of the cups overflow, what is the ...
September 24, 2007

Chemistry
An element consists of two isotopes of mass 36.4681 and 43.59612 amu. If the average atomic mass of the element is 40.741 amu, calculate the percent abundance of the first isotope.
September 24, 2007

Chemistry
calculate the wavelength of the second line in the Brackett series (nf=4) of the hydrogen emission spectrum. Rh= 2.180e-18 any help please? i know its energy levels 4 to 6... but that is all.
September 24, 2007

Social Studies
there's no continents in america?
September 17, 2007

ap chem
A certain volume of a .50 M solution contains 4.5g of a certain salt. What mass of the salt is present in the same volume of a 2.5 M solution? Indicate the concentration of each ion/molecule: A mixture of 50.0 mL of .2M KClO3 and 25.0 mL of a .20M Na2SO4. How would you answer ...
September 13, 2007

psychology
what are four subfields of psych?
September 5, 2007

math
2.089 in expanded form
September 4, 2007

Projects
Can somebody PLEASE tell me a lot of fun places to go to in Tennessee? I need to do a project about TN. Thank you!
August 27, 2007

Project~Writing
THANK YOU SOOO MUCH!!! But, I have heard from my teacher that you can't trust Wikipedia because ANYBODY can post something on there. But, THANKS ANYWAYS! :D
August 24, 2007

Project~Writing
How does a Table of Contents look like?
August 24, 2007

PROJECTS
Can you please give me images about how to make a timeline? Thank you for using the Jiskha Homework Help Forum. The following site has samples of timelines: http://www.teach-nology.com/web_tools/materials/timelines/ Thank you SO much!It really helped me! i have write abt ...
August 20, 2007

translation
hi, my name is lily and i need a site or someone very skilled and knowelged in the ancient language of latin to translate for me: the word "courage" and "honor" its very important to me that the exact meaning is put across, not a simple word substiute. ...
July 31, 2007

Math
Gasoline accounts for 85% of the motor fuel consumed in the United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. Would his be correct? 82%=82/100 ...
May 27, 2007

science
What are some examples of biotic and abiotic factors of an Eastern Bluebird? Biotic is living factors and abiotic is non-living factors. So, for a bluebird, sunlight (length of days effecting ovulation)availbility of water for drinking would be Abiotic factors. Food, nesting ...
May 21, 2007

algebra
can anyone tell me about polynomials please You need to be more specific in your question. Polynomials is just about half of a beginning algebra course.
May 20, 2007

Dogs
Do dogs eat rodents, fish, and rabbits? no. dogs do not eat any of those stuff. except maybe fish. Many dogs will eat anything they can get there jaws around. They aren't particularly picky. I won't tell you what mind get into. <G>
May 8, 2007

inspirational poems
Can you give me a website for inspirational poems please? http://www.businessballs.com/ifpoemrudyardkipling.htm Besides "If", see the list at the bottom of the page..."Do not stand at my grave and weep" is pretty strong. Thank you so much!!!!! I didn't ...
May 7, 2007

chemistry
where can i find printable worksheets from prentice hall for chemistry? I looked, but could not find any from PH online for any grade level. nor did I.
May 7, 2007

random
I dunno. Why don't u wait 4 a teacher 2 answer that? I guess any grade that can type and ask Qs. :p any grade.
May 7, 2007

Table of Contents
I seem silly asking this question but.... How does a table of contents look like? I forgot. Thank you for using the Jiskha Homework Help Forum. The Table of Contents in ANY book that you are familiar with, will give you an idea of the format. Also, here is an example: http://...
May 6, 2007

Diorama
I just thought that there are people always on this web 2 help. Now I know. *-* Lily, yes I am a teacher, and so are a number of others who help here. We are happy to help, but are not always here at the exact moment you are. Good luck with your project. Thankz anyways. Wat ...
May 6, 2007

Social Studies
What's a web for help with Ancient Egyptians' mummification process? Here are a couple of sites that will be of help. http://www.touregypt.net/magazine/mummificationinancientegypt.htm http://www.egyptologyonline.com/mummification.htm Thanks so much. Thanks to the ...
May 6, 2007

alg2 (sequences)
how do i find the pattern for: -4,8,-12,16 if the last number is negative, multiply by -1 then add 4 if the last number is positive, add 4, then multiply by -1 or how about termn+1 = (abs(termn))*(-1)^n, where term1 = -4, n>0 oops that last line should have said: termn+1...
May 3, 2007

math
Can someone please help me with these few problems here? Find the holes and points of discontinuity: 12x^4+10x-3 ----------- x-1 and 12x+24 ------ x^2+2x In the first, examine x=1 and in the second, examine x=-2. Look at the numerator also at that same point. Oh, I am so sorry...
April 28, 2007

english (red sky at morning)
what does the allusion "knees that launched a thousand ships" refer to? Here is the background of the original phrase: http://www.phrases.org.uk/meanings/359800.html What you quoted is alluding to this in some way. Helen of Troy, the most beautiful woman in history, ...
April 25, 2007

Math
Solve 2x-y+3z=8 x-6y-z=0 -6x+3y-9z=24 Did you notice that your third equation has the same normal as the third one? So visually I see two parallel planes intersected by third non-parallel plane, namely the second equation. So solve equations 1 and 2, and express them in ...
April 21, 2007

biology
please help me unscrample the following words: (the space means thate the anagram has two words in it, but the space is not necessarily at the space) rmns teizysecntiore nt roetssieitrsic id ksdxlne so derrecisgntdie Thank you very much for your time! -Lily ...
March 19, 2007

egypt mummification
the ancient eygptians stuffed their nastrilsith bees wax- sixth grader
February 8, 2007

Declaration of Independence
he served commander-in-chief of the continental army the american revolutionarywar
January 23, 2007

ANYBODY HERE, I NEED HELP WITH ENGLISH HOMEWORK
ENGLISH HOMEWORK: WHAT MEANS ABANDON? WHAT MEANS I ABANDON A BOOK? http://www.google.com/search?hl=en&lr=&defl=en&q=define:abandon&sa=X&oi=glossary_definition&ct=title
December 24, 2006

Algebra
Write a system of inequalities to express the exterior of the triangle ABD if A=(-2,7), B=(4,0), and C=(1,-3). Please help! gracias<3 Derive equations for the three lines connecting the three points. Then change the equations to inequalities to represent the region on the ...
December 20, 2006

Math
Simplify. (5x2 + 3x - 7) - (x2 - 7x + 4) Simplify. (5x^2 + 3x - 7) - (x^2 - 7x + 4) distribute - sign to get -x^2 +7x -4 put on top of one another and add 5x^2 + 3x - 7 -x^2 + 7x - 4 ------------- 4x^2 +10x -11
December 16, 2006

Chemistry
Given the following equation: SO2 + NO2 <--> SO3 + NO At 25 Celcius, 2.00 mol of each of SO2 and NO2 are introduced into a 1.0L sealed flask. When euilibrium is reached, it is found that [NO2] = 1.30 mol/L [SO3] = 1.30 mol/L -- Calculate the concentration at equilibrium ...
November 8, 2006

acids and alkalis
the only acids and alkalis i know is acid: batterys? acid rain lemon and orange alakalis: toothpaste mouthwash shampoo detergents and soap can someone plz help me to add more to my list? thnx if you do i rly need it for my upcoming science test and the more that i collect the ...
November 4, 2006

math please HELP!!!
please help!! what is 6 times the sum of 13 and a number? 6(13+ N)
November 2, 2006

MATH - PLEASE HELP!
Need help with combining like terms How do I figure this out... 11+5t^2+t+6t If anyone can help I would really appreciate it. I helped BELOW!!!LOL See the answer below which I posted as a correction to the answer provided by Margie and Dr Phil. The correct answer to this post ...
November 2, 2006

math
Can anyone help with combining like terms? The question - 11 + 5t^2 + t + 6t. I don't have a clue were to begin. Wouldn't it be toget all the T's together? Would 5t^ go with it also since it is an exponent? I think so I am not sure but I think it would be that.Let ...
November 2, 2006

world geography
ijusttook the exam and its all right got a 80
November 1, 2006

word unscramble
can u please unscramble this word:eehkossuy
September 28, 2006

word unscramble
tuythrhthtrj6jtr
September 28, 2006

science
Why is hydrogen, H, most often considered a nonmetallic element?
September 22, 2006

Distributive property
6 divided by 642
September 20, 2006

chemistry
If 100. g of iron at 100.0 C is placed in 200. g of water at 20.0 C in an insulated container, what will the temp, C, of the iron and the water ( C value is 4.18) when both are at the same temp? The specific heat of iron is 0.444 KJ/Kg C ---- steps would be appreciated... ...
September 15, 2006

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