Questions Asked on
November 29, 2006

chemistry
The enthalpy of vaporization of benzene, C6H6(l), is 33.9 kJ mol?1 at 298 K. How many liters of C6H6(g), measured at 298 K and 88.7 mmHg, are formed when 1.90 kJ of heat is absorbed by C6H6(l) at a constant temperature of 298 K? not sure what formulae to
asked by tyler 
discrete math
let d be a positive integer. Show that among any group of d+19not necessarily consecutive) integers there are two with exactly the same remainder when they are divided by d. The possible values of the remainders are 0, 1, 2, ...d1. So there are a total of
asked by thisha 
science
If the country is not increasing in population growth rate, what are some socio/economic problems that might occur? In such a situation, the average age of the population increases and, unless there is an actuarily sound retirement funding program (instead
asked by Fallon 
math
a house has two rooms of equal area. one room is square and the other room a rectangle, four feet narrower and 5ft longer than the square one. find the area of each room? let x = dimensions of the square. Rectangle then is x4 and x+5 Set areas equal. area
asked by marybeth 
math
a childs bank contains $6.30 in dimes and quarters. there are twice as many dimes as quarters. how many of each kind of coin are in the bank? let d = #dimes and q=#quarters. The total is worth $6.30. eqn 1 is 0.10*d + 0.25*q=$6.30 eqn 2 is 2*#quarters =
asked by katie 
math
a rectangle is twice as long as it is wide. if both of its dimensions are increased by 4m, its area is increased by 88m^2 find the dimensions of the original rectangle Original rectangle = w for width and 2w for length. Area = w x 2w Larger rectangle = w+4
asked by samantha 
math
a poster is 25cm taller than it is wide. it is mounted on a piece of cardboard so that there is a 5cm border on all sides. if the area of the border alone 1350cm^2, what are the dimensions of the poster? It is almost a must to draw a diagram but I can't do
asked by jason 
Chemistry
Why are the properties of alloys gnerally superior to their constituent components? In most cases, not all, mixing metals forms eutectics (sometimes called eutectic mixtures). These eutectic mixtures are the combination of the elements that form the lowest
asked by Bryan 
Math
For two consecutive integers, the sum of the smaller and twice the larger is 38. What are the integers? Plz explain. Thanks 2(a+b)=38 Therefore: a+b+(2(a+b)=38 a+b+2a+2b=38 3a+3b=38 3(a+b)=38 I got as far a here. I don't know if this helps. My last stop
asked by Jamie 
physics
i don't understand the projectile motion...my teacher said...it's a motion of a body confined to a vertical plane, perpendicular to Earth's surface... I don't get it, can anyone explain to me clearly???? plzzzzz....THX!!!! If your teacher said that, she
asked by Katrina 
science
Did Leonardo Da Vinci invented scissors? http://www.google.com/search?hl=en&safe=off&as_qdr=all&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=+%22invented+scissors%22+da+vinci&spell=1
asked by Cindy 
math(apology)
Sorry[samantha,jason,marybeth,john,tyrik,aaron,katie,and tiffany]i will send you some work to show you i tryed] Whoever you are, Your IP address is being recorded. Stop the impersonation of a teacher now, or you will be banned. We just don't have time for
asked by Writeacher 
Chemistry (Check)
True or False? In a structural formula a shared pair of electrons is represented by two dashes. Is this True? Fill in the blank Structural formulas show the arrangement of____________ in molecules. is it electrons? A shared pair is represented by two dots.
asked by Bryan 
HELP
how can you tell the difference between a positively charged and a negatively charged object by using a electroscope Ashley: Please include the subject in your questions: Science, or Electricity would have been appropriate here. You can only determine the
asked by ashley 
math
a painting is 3 inches longer than it is wide. it is set in a rectangular border that is 2 inches wider than the painting on each side. if the area of the border is 100in^2 what are the dimensions of the painting? Here is a problem I worked for Jason that
asked by tyrik 
math
what is the largest prime number you will need to check to find all the prime numbers less than 100 Here is a site that I found searching Google with the key words, "prime numbers." http://mathforum.org/dr.math/faq/faq.prime.num.html I hope this helps.
asked by sara 
Shear Modulus
Hi there, quick question: How would you find the shear modulus of a ruler (plastic 12 in)? I don't exactly get it. You have to bend it which will help you...??? Thanks! Bending it like a beam, or measuring its vibrational frequency when clamped at one
asked by Ted 
math
a corner lot that was originally square lost 185m^2 area when one of the adjacent streets was widened by 3m and the other was widened by 5m. find the new dimensions of the lot.(hint:let x equal the length of a side of the original square lot) It might help
asked by john 
math
a bus takes 12 hours to travel the same distance that an airplane travels in 1.5 hours. the average speed of the airplane ia 120 km per hour faster than five times the average speed of the bus. what is the average speed of the bus? let x represent the
asked by aaron 
math
at the beginning of the year, allison and sean togethor had 24 papergack books. during the year,allison doubled her supply but sean lost three of his. togethor they had 46 books at the end of the year. how many books did each have at the beginning of the
asked by cooper 
English
Which word pair is a set of antonyms? anxious,confident eager,excited worried,concerned depressed,sad Antonyms are words that mean the opposite of each other. Which pair is like that, do you think? http://www.thesaurus.com
asked by Brittany 
science
these are my homework questions can you answer any???there are 4 1 A pupil placed some magnesium in a gas jar of oxygen How could the rate of reaction between these substances be increased 2 Complete the word equation for the reation magnesium and oxygen 3
asked by lauren 
math
what is an example of a positive corralation using a scatter graph? please help!!!!!!!!!!!!!!!!!!!! I don't know how to place that image in this reply. However, I will try to describe it. If both the abscissa (horizontal or X axis) and the ordinate
asked by lauren 
math
janet has $8.55 in nickels,dimes,and quarters. she has 7 more dimes than nickels and quarters combined. how many of each coin does she have? Here is a a very similar paroblem See if this doesn't help. http://www.jiskha.com/display.cgi?id=1164829990
asked by mike 
Math  Exponential Notion
Can someone explain this to me please, I cannot help my son with his homework Do you mean exponential notation? y ^ x = "y raised to the x power" Yep  sorry what do u need help with? Yes  I am not remembering how to do powers  etc. can their be a number
asked by Trudy 
chemistry
The density of acetone vapor in equilibrium with liquid acetone, (CH3)2CO, at 33.1°C is 0.832 g L?1. What is the vapor pressure of acetone at 33.1°C, expressed in kilopascals? agian i am confused with formulae, hoe you can helpm thanks! change 0.832 g to
asked by tyler 
Project Management
What are the important practices used by your company (or in your experience) for successful partnering, and what steps can be taken to improve your Company¿s partnering effectiveness? Partners need to be chosen carefully: Partners must have common
asked by Zeta 
Free/Slave states of 1860
PLEASE HELP ME!!!!!!!!!!!!!! I need to know how many free states there were in 1860 19 or 18.One website says 18 while the other says 19. It would help me a lot if you name the slave states too or give me a good reference. One website said there were 15
asked by Katie 
Math
How can I convert mm to cm and cm to mm Look at the metric system, a part of which is shown below. The prefixes are kilo hecto deka unitgrams, liters, meters, etc. deci centi milli Stearting anywhere on the scale of prefixes above, count the number of
asked by Frances 
Physics
Ok, so this probem is kinda complicated, so ask me if you need clarification. This problem deals with Impulse and Momentum. There are two balls hanging vertically from a horizontal plane. Ball A is pulled back and is set up to strike ball B. Given for ball
asked by Jared 
life!+ english!
“What he could do he did.” How does this statement relate to our lives? I think what the teacher meant is, "How does that statement relate to your life?" This is something you need to answer for yourself. I cannot relate it to your life. You might be
asked by harley! 
Science
Use the electron theory to explain how one object can be negatively charged and another can be positively charged. help If electrons are negative, removing them will leave a net positive charge (net meaning fewer negative electrons than postivite protons).
asked by Nicka 
Math
Could someone help me with this question? Make up a set of 7 numbers having the following landmarks: mode 21 median 24 maximum 35 range 20. 15, 21, 21, 24, 27, 29, 35 The mode (21) is the number that occurs most frequently. The median (24) is a number in
asked by Niki 
?
what happens the first time that buck answers the call of the wild? http://www.sparknotes.com/lit/call/ =)
asked by timmy 
Accounting question
How are posting procedures for closing entries and for other general journal entries different?
asked by Anonymous 
Biology URGENT!!!!
I need to know if flagella are on plant or animal cells. I need to know the same for cilia. THIS IS DO TOMMOROW!! Thank you go to google and type in flagella and cilia http://en.wikipedia.org/wiki/Cillium http://en.wikipedia.org/wiki/Flagellum
asked by Amanda 
English
What kind of effect does alliteration create in wrting? http://en.wikipedia.org/wiki/Alliteration
asked by Gina 
Science
What type of charge moves through conductors? Explain how it moves. thanks Electrons are the current carriers in metals. Electrons have a negative charge. Electrons in metals are loosly bound to atoms, so an external electric field will cause them in their
asked by Rachelle 
Chemistry
in a cylinder that was 9.0 mm in diameter and 215 mm in length. I want to know the temperature (in Kelvin) and pressure (in atm) within this tube after combustion assuming that the cork did not “shoot” out of the end, i.e., the pressure was contained
asked by John 
computer science
Algorithm for Binomial Numbers Task Binomial numbers (or binomial coefficients) are important positive integers that arise frequently in computing and mathematics. A function to compute binomial coefficients will have two inputs: n and k. The corresponding
asked by Gurv 
Economics
From reading a paragraph, I gathered following facts. Bills and coins outside the bank: 175 Checkable deposits 418 savings and time deposits 1782 currency inside bank 28 central bank deposit 186. so.. the banks reserve is 186+28=214 monetary base: 186 +
asked by Anne 
math
jim's sandwich cost the same as the combined cost of his salad and milk. the sandwich cost three times as much as the milk. the salad cost &0.20 more than twice the cost of the milk. how much did jim's lunch cost? The Answer is:0.50 Cents
asked by joseph 
math (algebra one )
Write an equation of the line that passes through each point with the given slope. (3,4) ,m=3 a. y=3x+13 b.y=3x5 c.y=3x+5 d.y=3x+5 ?? The general equation for a sraight line is in the form y=mx+b where m is the slope and b is the y intercept. You are
asked by cathy 
math
if a 13 by 9 inch brownie pan is divided into 20 equal size brownines, what are the dimensions of one brownie? Divide 13 by 5, and 9 by 4 To get the dimensions. 13 divided by 5 is 2 3/5 9 divided by 4 is 21/4 please explain or show equation in fractions
asked by kyle 
science
how does a metamophic rock form. http://www.cdli.ca/CITE/rocks_metamorphic.htm http://gpc.edu/~pgore/Earth&Space/metamorphicnotes.html
asked by jonathon 
Microeconomics
The marginal costs and prices of a purely competitive market system accurately measure: a. Both spillover costs and spillover benefits b. Spillover costs but not spillover benefits c. Spillover benefits but not spillover costs d. Neither spillover costs
asked by Linh 
Social Studies
where would I find pictures of the pueblo indians and information about the food they ate back in the 1600's? http://images.google.com/images?hl=en&q=pueblo+indians and
asked by Bill 
English
Which of the following words is bias free? A. Mailman B. Spokesman C. Firefighter D. Waitress Would it be (C)firefighter? Thank you for your help! yes.
asked by Maranda 
microeconomics
what is ment by allocative and productive efficency stuff
asked by nadine 
science
How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries? The addition of sugar to the outside of the strawberry makes a solution that is more concentration outside the strawberry than inside the fruit. Water moves
asked by erin 
Economics
The table below shows annual demand (in 100,000 units per year) for Widgets. Use this information to calculate a linear trend forecasting model using regression analysis. Use your trend estimate to forecast demand for the years 1995 and 2000. Year Demand
asked by Adam 
quadratic word problems
a rectangular swimming pool has a perimeter of 24 feet. what should the dimesions of the pool be to create a maximum area? what would this area be? If x is the one side's dimension, the adjacent side's dimension is 12  x. (That makes the perimeter 24).
asked by brittany 
Finance
What minimum reduction in the time to collect and process each check is needed to justify use of the lockbox system?
asked by Anonymous 
math
find 2 prime numbers that if multiplied would generate a 400 digit number I'm not sure what you want. 400 is a threedigit number, and 4000 is a fourdigit number. I don't think you want a "400 digit number." Assuming you want a number with a value over
asked by quita 
what does this mean+ English!
What does this mean: “he was little or nothing but life.” What are you taking this from? I may be able to help. It sounds like what he's saying is that he was not very important, nothing more than a mass of bones taking up space. Meaning that he didn't
asked by hartley! 
Math
How do you convert fractions to a percentage? give me an example and ill explain what is the percentage for 7/4? divide 7 by 4. 1.75 multiply by 100 175 7 is 175 percent of 4. so, 175% = 7/4?
asked by Courtney 
computer
what is insert? Are you referring to the Insert key? If so, here's what happens when you press it: Whatever you type will wipe out whatever is already typed if you are entering text in the middle of a sentence or paragraph. I try to leave it off. It's more
asked by holly 
math
A right cicular cylindrical can is to be constructed to have a volume of 57.749 cubic inches (one quart). The sides of the can are to be formed by rolling and welding a strip of metal, which may be purchased in rolls with width equal to the desired height
asked by jenni 
Music
I have a couple of questions... 1. I have to transpose a musical piece that is in B flat. I need to move it up a major 3rd from that. What key would that be in? 2. I have questions about diminishing intervals as well. Please help.
asked by Katie Bunting 
listnening?
How important is effective listening? It is fantastically important. Many miscommunications occur because of ineffective listening. These miscommunications can cause hurt feelings, frustration, fights and even wars. For effective listening, you first have
asked by jen 
science
Is it TRUE that a Cruise Liner, QE2, moves only 12 inches on 1 gallon of diesel fuel? No. According to specifications available online, cruising speed, the QE2 moves 49 feet per gallon consumed.
asked by Cindy 
science
How was theMicrowave oven was invented? Was it when a researcher walked by a radar tube and a chocolate bar in his pocket melted?
asked by Cindy 
Math
When the quotient of two numbers is the same as the first factor, what do you know about the second factor? That the second factor will be different? idk... i forgot about that one
asked by James 
Math
4x+5=25 4(5)+5=25 x=5 4 is the correct answer Are u still on??
asked by Sumone 
social studies
how do we really know if the stuff in the S.S book is really real.we don't know because we wasn't there Most of it is true. Resercher and other have worked many years and by using technonly and other eveidence have figured out how people lived and ect. So
asked by savannah 
social studies
what did they call the mummy shaped figure that worked in the afterlife's fields for the mummy? http://www.carlos.emory.edu/ODYSSEY/EGYPT/shabtis.html
asked by nadine 
social studies
what exactly does increasing/decreasing population growth say about the country? also, if birth and death rates remain the same, what is the population pyramid going to look like in a couple of decades? It depends on who is dying. If infants are dying, it
asked by Fallon 
HELP History HELP
Were there 19 states in the union?? http://www.armystudyguide.com/content/army_board_study_guide_topics/flags/datesthestatesentered.shtml There were 19 states until the 20th state joined! =)
asked by Katie 
Chemisrty
Where can i find drawing of electron dot stuctures for compounds like BR2 and HCN HCN is at the link below. http://dl.clackamas.edu/ch10601/formulas.htm I couldn't find one for Br2 on line but here is how it will look. .. .. :Br:Br:
asked by Lance 
Projectt Management
Are Project audits conducted at your Company. If so, on what type of Projects and how frequently? What do the audits accomplish? If not, would this methodology improve your company¿s Project management success? How?
asked by Zeta 
Naming alkanes
Its been a long time since I did this but I believe you pick the longest chain. If there are double and triple bonds involved, pick the longest chain that contains the double bond plus single bonds to go with it (but that is for alkenes isn't it?) When
asked by DrBob222 
math
A right cicular cylindrical can is to be constructed to have a volume of 57.749 cubic inches (one quart). The sides of the can are to be formed by rolling and welding a strip of metal, which may be purchased in rolls with width equal to the desired height
asked by ashish 
simple math
(y29)/4y times 12/3y+9 does it equal y3 No, it is not y3 [(y29)/4y] * 12/(3y+9) =(1/4)(y+3)(y3)(1/y)*(1/3)*[4/(y+3)] =(y3)/(3y) thank you but that wasn't an answer choice. (y3)/y was an answer choice though Sorry, I made an algebra error factoring
asked by Anonymous 
EGYPT PLEASE HELP!
Does anyone know any good websites for the Valley of the Kings? http://en.wikipedia.org/wiki/Valley_of_the_Kings Is a very good description I do have that one.... any more websites?
asked by Aaliyah 
Math
x/43=7 x/43=7 x/4=7+3 x/4=10 x=10x4 x=40 x/4 = 7+3 x = (7+3)(4)
asked by Sumone 
English
"Keep the ball rolling" is an example of which? redundant wording,complex words, a cliche, an independent adjective Is it a cliche? It would depend on usage, however, I can think of many instances in which it would be cliche. Keep the ball rolling with
asked by Brittany 
Grants
What grant would you want if you were doing a community service project and are a nonprofit organization?? I am confused.. Thanks, Cass By the way we want to deliver Stuffed Animals to children in the hospital... http://www.grants.gov/ You can find out
asked by Cass 
college essay question
George washington university is a good match for me because it is such a wellrounded campus.
asked by Writeacher 
Projectt Management
Are Project audits conducted at your Company. If so, on what type of Projects and how frequently? What do the audits accomplish? If not, would this methodology improve your company¿s Project management success? How? All projects should be reviewed
asked by Zeta 
Economics
The table below shows annual demand (in 1,000,000 units per year) for Widgets. Use this information to calculate a constant growth forecasting model. Use your growth model to forecast demand for the years 1995 and 2000. Year Demand 1990 1.1 1991 1.5 1992
asked by Andrew 
English
Can anybody help me to write an essay about"A way to decrease chance of becoming a victim of random violence". Don't walk in parking garages alone late at night. carry around pepper spray. easy as that. Martial arts can be very helpfull in some situations
asked by louise 
science
Is it TRUE that a Cruise Liner, QE2, moves only 12 inches on 1 gallon of diesel fuel? http://www.google.com/search?hl=en&lr=&safe=off&as_qdr=all&q=+%22Cruise+Liner%2C+QE2%22+inches
asked by Cindy 
math
Is There more chickens in the world or people?
asked by Cindy 
music
I have to write a detailed description of HARMONY,DISSONANCE + COUNTER MELODY. please help i don't know what to write Here are two dictionaries of musical terms: http://www.essentialsofmusic.com/glossary/c.html
asked by David 
math inequality
133m (< = ) –4m is 13m greater than or eual to 4m No. < means less than. 133m is less than or equal to 4m.
asked by kirsty 
DISCRETE MATH
HOW MANY POSITIVE INTEGERS LESS THAN 1000 A.are divisible by exactly one of 7 and 11? B. are divisible by neither 7 nor 11? C. have distinct digits? D. have distinct digits and are even?
asked by thisha 
Project Management
What steps can be taken to lessen the risk for both parties of a contract when negotiating contract costs, terms, and conditions?  Define the unknown elements (material, labour, work scope) and separate them as costs.
asked by Zeta 
Project Management
What steps are used by your Company to monitor Project status to Cost & Schedule? What types of reports are used? 
asked by Zeta 
HISTORY
How were americas foreign affairs like druring the civil war?
asked by ally 
Civics
What are some pros and cons of todays min. wages? Here are some sites on the pros and cons. There is also a poll included. http://www.youdebate.com/DEBATES/minimum_wage.HTM http://www.ncpa.org/sub/dpd/index.php?page=article&Article_ID=11242 (Broken Link
asked by Destinee 
English!
What is the effectiveness of having a straightforward diction in a short story? It's probably more realistic, especially if the story is told in a 20th or 21st century setting. If you want to know what the difference would be, read a bit of Shakespeare,
asked by george 
math
whats all the prime numbers less than 200 See my response to your previous post. Thanks for asking.
asked by sara 
Maths
I have to write a detailed description of HARMONY,DISSONANCE + COUNTER MELODY. please help i don't know what to write Try the following links: http://en.wikipedia.org/wiki/Harmony http://en.wikipedia.org/wiki/Countermelodies
asked by David 
math
A right cicular cylindrical can is to be constructed to have a volume of 57.749 cubic inches (one quart). The sides of the can are to be formed by rolling and welding a strip of metal, which may be purchased in rolls with width equal to the desired height
asked by Jessica Griffis 
help me unscramble?
eanhicurr hurricane or rauncher hurricane eanhicurr
asked by jan 
English
May I see my essay now?
asked by louise 
math
the average of 4 concecutive even integers is 17. find the integers samantha, jason, marybeth, john, tyrik, aaron, katie, and tiffany  You would probably get better responses if you show what YOU have done so far to try to solve these problems. Our job
asked by tiffany