Questions Asked on
March 16, 2009

chemistry
Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container
asked by CHEMistry 
chemistry
AlPO4(s)Al^3+(aq)+PO4^3(aq) PO4^3(aq)+H3O^+(aq)HPO4^2(aq)+H2O(l) What is the net ionic equation for AlPO4(s) dissolving in H3O^+(aq)?
asked by CHEMistry 
calculus
26. A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5
asked by jason 
CHEMISTRY
Find the number of moles. a. 3.01*10^23 molecules H2O. b.1.000*10^23 atoms C. c. 5.5610 *10^22 ions Na^+.
asked by Jaz 
math
Farmer Brown had ducks and cows. One day she noticed that the animals had a total of 12 heads and 32 feet. How many of the animals were ducks and how many were cows?
asked by maddy 
Chemistry
Question: Chloroform, CHCl3, a volatile liquid was once used an anesthetic but has ben replaced by safer compounds. chloroform has a normal boiling point at 61.7 degree C and has a heat of vaporization of 31.4 kj/mol. compute its vapor pressure at 36.2
asked by eliz 
chemistry
Find the mass in grams. a. 4.30 x 10^16 atoms He, 4.00 g/mol b. 5.710 x 10^23 molecules CH4, 16.05 g/mol c. 3.012 x 10^24 ions Ca^2+, 40.08 g/mol
asked by jaz 
Chemistryweak acid affects the pH?
For which salt in each of the following groups will the solubility depend on pH? AgCl AgF AgBr please explain why its the answer
asked by Amy 
chemistry
suppose that you could decompose 0.250 mole of Ag2s into its elements a.How many moles of silver would you have? how many moles of sulfur would you have? b. how many moles of ag2s are there in 38.8 g of AG2S? how many moles of silver and sulfur would be
asked by ben 
11th grade
What are the formal and functional regions of seattle washington???
asked by Matt 
Physics
A block of weight 3.8N is launched up a 30 degree inclined plane of length 2.25m by a spring with spring constant 2.35kN/m and maximum compression 0.10m. The coefficient of kinetic friction is 0.50. How much kinetic energy does it have at the top of the
asked by Harold 
Economics
I got a lot of problems with this exercise. I really hope you can help me. Thanks! Samantha Roberts has a job as a pharmacist earning $30.000 per year, and she is deciding whether to take another job as the manager of another pharmacy for $40.000 per year
asked by Muusen 
Science
The separation of Pwaves and Swaves on a seismogram recorded 4500 km from the epicenter of an earthquake is six minutes. On another seismogram that separation is seven minutes. Is the second station closer to or more distant from the epicenter? Explain.
asked by Angie 
Chemistry
Which electron is, on average, further from the nucleus: an electron in a 3p orbital or an electron in a 4p orbital?
asked by Jimmy 
ACCOUNTING
P72B The board of trustees of a local church is concerned about the internal accounting controls pertaining to the offering collections made at weekly services. They ask you to serve on a threeperson audit team with the internal auditor of the university
asked by ANDRE 
ethics
Write a 200300 word summary that answers the following questions: what information about race and ethnicity in the united states has helped you better understand or relate to specific minority groups?, Have you learned something new about your own cutural
asked by kim 
Chemistry
Question: of the salts, NaC2H302, NaCN, NaCl, and NH4NO3, how many form neutral aqueous solutions? How do you determine which are neutral and which do not form neutral solutions?
asked by Anonymous 
Science
Predict what would happen to a reptile body temperature if the outdoor temperature increases by 10c.
asked by Zach 
chem
calculate the number of moles in 0.00655 g of antimony
asked by lala 
Chemistry
According to the quantummechanical model for the hydrogen atom, which of the following electron transitions would produce light with the longer wavelength: 2p > 1s or 3p > 1s I have the answer, which is 2p > 1s, but can someone offer some help as to
asked by Jimmy 
chemistry
Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container
asked by CHEM 
accounting
Computer equipment was acquired at the beginning of the year at a cost of $56,000 that has an estimated residual value of $3,000 and an estimated useful life of 5 years. Determine the 2nd year’s depreciation using straightline depreciation
asked by angel 
chemistry
I want to know HOW to do the problems, not just an answer please. 1.) How many moles of ions are released when 0.27 moles of CoCl2 is dissolved in water? 2.) A 5.54g sample of vinegar was neutralized by 30.10 mL of 0.100M NaOh. What is the precent (by
asked by chris 
Psychology
It is common sense to see that the brain has an impact on the body. If the brain issues the command to look to the left, the body generally responds by doing just that. How much can be said of the reverse? Does the body have an impact on the brain?
asked by Bryan 
Algebra
Rewrite the rational expression as an equivalent rational expression with the given denominator. (Both are fractions) It's 21 over x squared minus 6x is equal to 1 over x (x6)(x+5) 21 = 1 x2 6x x(x6)(x+5)
asked by Estela 
Math
How do I solve: log6 (x^25x) = 1 1/2log5(r2)log5 r) log2 (x1/x^8) I really don't know how to do these or even start
asked by lt 
math
Find the maximum and minimum values of f(x,y)=xy on the ellipse 8x^2+y^2=4?????
asked by alice 
Math
The formula to find the circumference of a circle that has a radius of 6 feet?
asked by Agustin 
Professional communications
Define and discuss the similarities and differences between routine and positive messages, negative messages, and persuasive messages.
asked by Barbara 
Chemistry
PreLab Questions Data: [mass of copper wire] 0.738 g [standard solutions] solution 1: 0.738 g of copper wire dissolved in 50.00 mL solution solution 2: 1:2 dilution of solution 1 solution 3: 1:4 dilution of solution 1 [absorbance data at lambda(max)]
asked by Jake 
Physics
You throw a stone into some nice soft and gushy mud. It penetrates one inch, slowed by a constant force. If you wanted the stone to penetrate four inches instead of one, you would have to throw the stone into the mud? I say eight times as fast?
asked by Harold 
Algebra
Factor Completely: 1000p^3  1 (One thousand P cubed minus one)
asked by clueless 
English
I have a book report due on Friday and need some help. My book is titled "Blizzard's Wake" written by Phyllis Reynold's Naylor. My report needs to include at least 6 sentences for each: Plot(not plot summaries), Setting, Characterization, Theme, Conflict,
asked by Jennifer 
math
t+1/t+5=(t1/t+3)+1 Solve for t
asked by Debbie 
Algebra
Rewrite the rational expression as an equivalent rational expression with the given denominator. (Both are fractions) 21 = 1 x2 6x x(x6)(x+5)
asked by Estela 
9th Grade Math
For my hw i have to graph the following equations 1) x  3y 5 = 0 and 2x = 1  3y 2) y  3x =5 and 3x = 7 + y 3) x = 3y and x +2 = 11 4) y = 2/5x + 1 and x + 2y +11 After done graphing the equations i have to state if there are zero, one, or many
asked by HELP 
history
how did machiavelli's principles of good governing apply to different renaissance rulers? :) thanks
asked by anonymous 
Physics
A 50 gram block is placed on a frictionless ramp 2 meters above the ground. It slides down the ramp and compresses a 140 N/m spring at the bottom. How far will the spring be compressed when the block is stopped by the spring? say 1.7 m
asked by Harold 
chemistry
caculate the number of moles in 8200 g of iron
asked by mel 
Math
how is the equation of direct variation similar to the linear equation y=mx+b? how are they different?
asked by Angie 
Chemistry
How do you determine what molecule will have the highest or lowest boiling points. example: if you had CH3F, N2H4, CH3OH and O2. how would you determine what is the highest boiling points? What do you look at?
asked by eliz 
Chemistry
Question: if you added ethylene glycol to your car's radiator to lower the freezing point to 31.0 degree C, what would the corresponding boiling point of the coolant in your radiator. The freezing point and boiling point constants for water are 1.86 and
asked by eliz 
Finance
Write a 200 to 300word explanation of the reasons the following types of companies would need a financial forecast: brand new company, family owned company, and a longstanding corporation.
asked by Anonymous 
Business Writing
Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe
asked by Anonymous 
math
A group of five friends go out to the movies. Their average age is 15. Paco is 13 yrs. old Zoey is 16 yrs. old. What is the average age of the other three friends?
asked by danny 
Chemistry
Which element has the following electron configuration: [Xe] 6s^(2) 5d^(1) 4f^(1)
asked by Jimmy 
math
Mr. Mitchells office is on a winding side road next to a highway exit.He is driving on the highway at 60mph, and at this rate he expected to arrive at his office at 8:45a.m.However at 8:30 he was forced to leave the highway and take the side road, driving
asked by nancy 
Math
What's an example of a situation in which it could be modeled by a linear function, but not by a direct variation?
asked by Angie 
Latin
Multi Romani copiam aquae in carris spectant. Would this translate to "Many Romans see the suply of water in the carriages?" Thanks, hopefully this will be the last question.
asked by Jeremy 
Math
how do you do this? i don't get it. The drama club plans to attend a professional producion. From 10 to 35 students will go. There is a onetime handling fee of $3. Each ticket costs $25 plus a $2 surcharge. Write a linear function that models this
asked by Angie 
algebra
Find an equation of the line containing the give pair of points. (2, 1), and (7, 4). The equation of the line in slope  intercept form is y= I 've tried this problem and can not seem to get could please help me.
asked by Johnnie 
english6
use DEFIANTLY in a sentence and it means to be bodly resistant or challenging
asked by i got adicted to twilight 
Math
The formula to find the circumference of a circle that has a diameter of 34 inches?
asked by Agustin 
statistics
I'm working on a statistics project and need to evaluate the expected value using hypergeometric distribution. I am unsure which variable to assign with value in the probability and expected values for the following data: "you work for a manufacturer who
asked by cp 
Making a business plan
Please check my answer thank you very much Based on the following information below please answer the question that follow. Area A: Brooklyn Brooklyn is a very heavily populated urban area within commuting distance from Manhattan by subway, bus, or car.
asked by Mari 
Science
Alaskan quake's richter magnitude: 8.6 Taiwan quake's richter magnitude: 7.6 about how much larger was the amplitude of the waves generated by the alaskan quake than the taiwan quake? a. about twice as large b. about ten times as large c. about one hundred
asked by Angie 
Business Writing
Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe
asked by Anonymous 
english
What is a scholarly article and how can i find one about the importance of religion in the 1600's, or around the time of Shakespeare.
asked by jake 
year 8 RE  re teachers
Please could someone help me with my re homework. i need to write an essay.this is the question: Show how religious beliefs and practices may be connected to the needs and concerns of people living at different times and in different situations. Please
asked by Kerrie 
math
how do you find the coordinates of the point (x, y, z) on the plane z = 1 x + 1 y + 2 which is closest to the origin
asked by alice 
Phiysics
A rock is dropped from a hotel and strikes the ground with a particular speed. In order, to double the speed at impact, you would have to drop the rock from the hotel at? I say impossible to determine
asked by Harold 
math
What is another name for an equilateral quadrilateral? a square?
asked by Anonymous 
college
The square of an integer is 12 more than the integer. Find the integer
asked by Jess 
Math
The formula to find the circumference of a circle that has a diameter of 100 yards?
asked by Agustin 
lord of the Fliesjournal help English
Has anyone read the Lord of the Flies by William Golding, well i have not done any journals. I don't understand the book at all. I need help of there is any for me. I think these journals were do today, but i have not got them done. I was hoping for a
asked by Jessica 
math
name 6 consecutive multiples of 5 which, when added together, make a sum between 340 and 350
asked by donna 
Latin
Would you mind checking my translations of these? 1. Silvas claras insulae magnae spectatis. You (plural) see the clear forest of the large island. I wasn't sure if I properly did the "of" part. 2. Numerus servorum in insula erat magnus. I said this meant
asked by Jeremy 
College Finite Math
Suppose for this problem that Pr[E]=13/24 and Pr[F]=5/8 and Pr[(E U F)'] = 0. Finding Pr[E/F] and Pr[F/E]. For this problem I added 13/24 + 5/8 and got 1.17, therefore, I assumed that .17 is the intersection between Pr(E) and Pr(F). I know that to solve
asked by Rory 
spelling
Write at least 8 words that start with gu and the u is silent. Any help is appreciated!
asked by Anya 
latin
urbs deleo non potuit. deleo has to be changed to the tense of the sentence. translate the sentence
asked by gggggggg 
science
Can the principles of relative dating be used to determine the date a rock layer was deposited? Explain your reasoning. I think no because realtive dating doesnt remember the exact date, it only remembers the time at around when it was formed. is that
asked by Anonymous 
Physics
The chemical potential energy of a certain amount of gasoline is converted into kinetic energy in a truck that increases its speed from 0 mph to 30 mph. To pass another truck the driver accelerates from 30 mph to 60 mph. Compared to the energy required to
asked by Harold 
Algebra 2
2x(x+2)(x^2  2x + 4) set these factors to zero and solve. I would really appreciate it.
asked by Peter 
Algebra (factoring)
Factor Completely: 1000p^3  1 help please
asked by Adi 
ms sue
thank you very much for your help. i am very grateful.
asked by donna 
re
what do christians believe about free will? Wha problems does suffering caus for religious believers? thanks
asked by valerie 
social studies
what was the purpose of the spanish encounting the aztecs and what were the spanish hoping for by making friends with the native americans?
asked by djgfsfsf 
grammar
Peer editing academic papers require criticalthinking skills and diplomacy.
asked by Anonymous 
Romeo and Juliet Summary
Could you please read my act 1 summary of Romeo and Juliet and if there are any changes needed please let me know. It doesn't matter if you don't remember the first act but as long as it sounds right to you. Thanks God Bless Sampson, and Gregory who are
asked by Lala 
Science
Which landscape region of New York is composed of low hills of unsorted sedimens of Cretaceous and Pleistocene age? 1 the Hudson Mohawk Lowlands 2 the Atlantic Coastal Plain 3 The Champlain Lowlands 4 The Eire Ontario Lowlands.
asked by Anonymous 
Math
how do you model this situation with a linear function: A market sells chicken for $2.99 a pound.
asked by Angie 
Math
if one year to a person is like seven years to a dog, and one day to a person is like one week to a dog, then a dog can have 21 meals everyday. how do you write an equation relating the data in this situation?
asked by Angie 
math
which of the following have congruent diagonals? square rhombus parallelogram rectangle i believe the answer is the square and rectangle.
asked by Anonymous 
chemistry
what are the different types of solutions?? is it saturated nonsaturated and supersaturated?
asked by lyne 
Latin
In what instances do you use the nominative for the word preceding "of the," in oppose to the genitive. For example, in some of my sentences, I have the nominative, like "Forma terrae in Sicilia plana non est." But other times, it is genitive "Curae
asked by Jeremy 
CHEMISTRY
i don't really understand molality. I know that it is a big concept but could someone explain it a little. the question is how would you prepare a molality solution.
asked by jacob 
statistics
I'm working on a statistics project and need to evaluate the expected value using hypergeometric distribution. I am unsure which variable to assign with value in the probability and expected values for the following data: "you work for a manufacturer who
asked by cp 
Art History
Discuss the ways in which Northern Baroque art treats issues of religion and morality. How did the particular social, political, economic, and religious context influence the art produced in Flanders and the Netherlands? In what ways did the art created in
asked by opanyin 
math
I need to subtract and simplify 2/x^26x27 1/x^1227 I got so far 2/(x9)(x+3)  1/(x+9)(x+3) not sure what to do next...please help
asked by Debbie 
college algebra
simplify 2.8xy
asked by crystal 
MGT 255
Where do the legislative and judical branches come into play with investigation and enforcement of the army corps of engineers?
asked by Sarah Van Zandt 
Art History
I am looking for references (links, URLs, articles, websites or any other information) to answer this question. "Consider the ways in which art produced in seventeenth, eighteenthcentury, and early nineteenthcentury (up to c. 1830) Europe was mobilized
asked by opanyin 
year 8 reRe teachers
i posted this question before but can`t see it on the page.sorry if it is there. please could someone help me i need to write an essay for re . i don`t really understand what to do. if someone could explain the question id be very grateful.We had a supply
asked by Kerrie 
math
Rachel likes running she ran over 30 miles five days this week. she ran 8 miles on Monday. How many miles did she run on average during the other four days of the week?
asked by danny 
geography
what is the capital of burkina faso?
asked by adriana 
Physics
I'm comparing the "gforce" of a rocket and a race car. My answer for the race car corresponds to the answer in the book but my answer for the rocket is off by 1. The book says I need to add 1 G because the rocket is going upward. So, instead of my answer
asked by KC 
Latin
The sentence is: Agricolae equi in reginae terra (with a macron) sunt. The answer is "the farmer's horses are on the queen's land." What ending are you supposed to use for something following an 's or s'? Doesn't this sentence use two different endings for
asked by Jeremy 
Working with Parents
Why must parents be involved in their child's day care program when it's sponsored by the government? A.Parent involvement reduces the cost of day care. B. Parents can judge the abilities of the staff at the center. C. Parent involvement frees the staff to
asked by Cynthia 
6th grade Science
What relationship exists between high tides and phases of the moon?
asked by Alice 
math
Find three positive real numbers whose sum is 52 and whose product is a maximum?????
asked by alice 
3rd grade
what is a good site to learn about the great chicago fire?
asked by hunter 
Check+Business
Indicate whether the market price of a product will most likely go up or down in the following situations and why: a) There is a drought in the Midwest (bushel of wheat) My answer: Go up, becuase the supply is limited b)Strawberries are in season with a
asked by Bryan 
Economics
What are the three parts of the production model?
asked by Lester 
chemistry
for my test i have to be able to Be able to determine the final molarity of a mixture of two solutions my teacher said the formula was m1v1 = m2v2/m1+v2 or something like that is that right??
asked by lyne 
chemistry
does normality measure concentration of solutions??
asked by lyne 
Language Arts
_________ __________ help you "see" or "envision a play" (drama) you read. If you could help me out with this answer it will be well apriciated, thanks.
asked by Samantha 
maths
Please help me answer this problem, sorry I cannot draw the shapes mentioned below Q. Add one or more lines to make these shapes rigid. 1) square 2) rectangle 3) issoceles 4) pentagon 5) trapezium 6) octagon Thank you very much.
asked by brendon 
Art History
2. Discuss the ways in which Northern Baroque art treats issues of religion and morality. How did the particular social, political, economic, and religious context influence the art produced in Flanders and the Netherlands? In what ways did the art created
asked by opanyin 
music
What is the musical structure (intro, verse etc) of the Beach boy's, woulnt it be nice? Thanks!
asked by Ronald 
NHP
Was war between Japan and the United States impossible to avoid by 1941
asked by William 
Science
How are biomes and photosynthesis connected?
asked by Sam 
English
Is Jinny a female name?
asked by John 
math
Rectangle A Find the length of the diagonal of the rectangle A Cordinates (1,5) (1,2) (5,2) (5,5) i got the equation d= √(15)^2+(25)^2 and came up wtih the answer of 15, but the answer key is 3√5 The calculator is never wrong SO IM WRONG
asked by fishycakes 
Alegebra
Find an equation of the line containing the give pair of points. (2, 1), and (7,4) The equation of the line in slopeintercept from is y= what
asked by Johnnie 
Science
chilean quake's richter magnitude: 8.5 taiwan earthquake's richter magnitude: 7.6 about how much more energy was released by the chilean quake than the taiwan earthwquake? a. twice as much b. ten times as much c. thirty two times as much d. one thousand
asked by Angie 
college algebra
simplify (5y+1)2
asked by crystal 
Social Studies
is the production model the same thing as the circular flow model?
asked by Lester 
social civics
what plan of government is used in chicago heights
asked by laura 
history
hi i need help getting the message of some cartoons but i can't post them so what i am to do thank you
asked by evan 
Algebra
how do solve this? 2x3(x^2  5x + 6)+5
asked by Paulette 
AlgebraCan't solve!
21 OVER X squared MINUS 6x is equal to 1 OVER x(x6)(x+5). I have to rewrite the ration expression as an equivalent rational expression with the given denominator.
asked by Estela 
algebra 2
how do you solve 1/3 + 4/x=2
asked by michelle 
reading
so i have this thing for reading and the question is toy fad of the 1970s:_ _ _ rock anyone know it?? like how am i supposed to no i didn't live back then kk bye
asked by Lola<3 
math
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house? the answer is 2 hrs and 24 min. How did they come up with that?
asked by Kaley 
Can someon e please help me (Algebra)
2x(x+2)(x^2  2x + 4) = 0
asked by Peter 
5th grade
use three 9's to make 11
asked by donna 
Alegebra
Given the function K described by K(x)=x+16. find each following. K(0)=16 K(13)=3 K(14)=2 K(8)=24 K(c+17)=C+33 Please check this problem see if is right.
asked by jj 
pre algbra
88*66
asked by hewan 
social studies
when north carolina decided to reorganize after the hillsborough convention, what change did they make and why? why were some critical of this decision?
asked by aminah davis 
6th grade
who made the arch of constantine
asked by mike 
6th grade
list two key differenes between anient rome and modern times
asked by niana 
english
use emarking in a sentence it means to go aboard a vessel, as at the start of a journey
asked by twilight rocks 
PE
how are physical workout helpful?
asked by Anonymous