Questions Asked on
August 4, 2008

chemistry
What is the equilibrium constant for the following reaction? 3A + 2B 2C
asked by kayla 
chemistry
A 55.0g piece of copper wire is heated, and the temperature of the wire changes from 19 degrees C to 86 degrees C. The amount of heat absorbed is 343 cal. What is the specific heat of copper?
asked by kayla 
LITERATUE
if this be error and upon me proved,i never writ, nor no man ever loved
asked by RONNIE 
chemistry
A 10g mass of krypton occupies 15.0 L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790 kPa.
asked by kayla 
chemistry
What is Dalton's law of partial pressures? Explain how this law relates to the fact that mountain climbers must carry tanks of oxygen when scaling high peaks.
asked by Dan 
chemistry
A rigid container of O2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?
asked by kayla 
Physics
A simple pendulum is 9.00 m long. (a) What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator accelerating upward at 2.00 m/s2? I keep getting 6.7, but it's wrong
asked by Elisa 
chemistry
Calculate the concentration of a silver ion when the solubility product constant of AgI is 10^16
asked by kayla 
chemistry
Describe the structure of the water molecule and indicate how this structure is responsible for many of the unique properties of this vital compound.
asked by kayla 
statistics
SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100. a. Find the probability that a randomly selected student's score on the English part of the SAT is between 400 and 675. b. What is the minimum
asked by Joanne 
chemistry
Which of the following usually makes a substance dissolve faster in a solvent? A: lowering the temperature B: decreasing the number of particles C: agitating the solution D: increasing the particle size of the solute
asked by kayla 
chemistry
A balloon filled with helium has a volume of 30.0 L at a pressure of 100 kPa and a temperature of 15 degrees C. What will the volume of the balloon be if the temperature is increased to 80 degrees C and the pressure remains constant?
asked by Dan 
World History
Who was the Isralite king known for his wise sayings, or proverbss? A. Sargon
asked by Anonymous 
physics
A bat flying at 5.0 m/s emits a chirp at 35 kHz. If this sound pulse is reflected by a wall, what is the frequency of the echo received by the bat? I keep getting the wrong answer, don't understand.
asked by Elisa 
Math
I think the answer is wrong online so I would like to know what the correct answer is before I teach a student! If it takes 6 cubes to build 3 steps, how many cubes will be needed for 11 steps? It sounds so easy but my answer doesn't match the answer
asked by Teacher 
chemistry
A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?
asked by kayla 
chemistry
Describe the parts of a calorimeter and the function of each part.
asked by kayla 
chemistry
The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
asked by kayla 
calculus
For what positive numbers will the square of a number exceed twice the number?
asked by Chan 
World History
Is the weekly day of worship and rest called the sabbath?
asked by Me 
matrices
Let A be a 5 by 4 matris and suppose that the system Ax=b has a solution. Explain why the solution is unique if and only if the rank of A is 4. I said that it is unique becaue the rank is equal to the number of columns. Do you have a better explaination.
asked by jen 
math
questions involving domain and range... 1. Find the domain of the function f(x)=(3x+1)/(sqrt of (x^2+x2)) andd. 2. Let f(x)= (absvalue(x))/x. Show that f(x)={ 1, x > 0 {1, x < 0 Find the domain and range of f(x).
asked by alk 
World History
Who was the Isralite king known for his wise sayings, or proverbss? A. Sargon B. Nebuchadnezzar C. Tutankhmen D. Solomen
asked by Anonymous 
english
Identify examples of bias, fallacies, and specific rhetorical devices in the speech. How did the speaker address arguments and counterarguments? Were the speaker’s arguments effective? Explain your answers. Campaigner: There is only one man who can rid
asked by Anonymous 
Chemistry HWK CHECK
1. A solution in which no more solid can be dissoved is referred to as ____. Answer: saturated 2.At constant pressure, heat can be referred to as (entropy, enthalpy, or free energy). Answer: enthalpy The measure of disorder or randomness of a system
asked by Blair 
Physics
Please help. I got 338.82 for the velocity and wanted to get the distance, but I can't seem to do it because I don't have the wavelength. Please help! A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.20 s later. Find the
asked by Elisa 
accounting
What Role does accounting play in business operations and; how depentant is a business on its accounting department and; why?
asked by Anonymous 
math
temperature dropped from 4 degrees to 18 degrees, how many degrees did it drop
asked by pat 
dt
i need to make a poster about italian food and make a menu any help gratefully received thanks
asked by murphy 
health
What is the training effect? A. The tendency to suffer injuries as a result of too much exercise B. Shortness of breath and dizziness caused by overexertion C. An increase in the resting heart rate and a decrease in the stroke volume of the heart D. A term
asked by MOE 
Math
Factor the following completely x^4 – 625
asked by Marilyn 
human resources
What are proximal and distal goals? Which type of goals is more effective?
asked by China 
health help please!!
socialization process of caregivers. what are the implications for patients?
asked by Marty 
Environmental Studies
What special problems are associated with developing an EMS for a college or university compared to an industrial or military facility?
asked by Thano 
science
Is it necessary for kittens to get their uterus taken out so that they don't have kids? I mean, is it really bad for them if they don't? and will it hurt the kitten who is getting the operation? *also* is it scientifically proven that if you stay too close
asked by Summer 
chemistry
If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was___? A: saturated. B: an emulsion. C: supersaturated. D: unsaturated
asked by kayla 
World History
The Egyptains believed that the pharaoh was the son of _______ A. Isis B. Osiris C. Bel D. Re
asked by Me 
mathematics  problem solving
Andy took a reading test.He read 97 words per minute.If a book has an average of 250 words on a page,how many pages can Andy read in one hour ?
asked by ryan 
World History
Using arificial means of bringing water to crops is called _______. A. adulation B. synagogue C. initiation D. inflation I know it's not A and I don't think it's C so I'm kind of leaning toward D, but I don't know for sure.
asked by Me 
chemistry
When 18 g of ethylene glycol C2H6O2 is dissolved in 150 g of pure water, the freezing point of the solution is ___ (degrees)C. ( The freezing point depression constant for water is 1.86(dgrees)C kg/mol. I know the formulas I just need to see it done step
asked by Jared 
Comp II
Where can I find persuasive essay topics
asked by China 
Statistics (2 mc probs)
I have the following two multiple choice questions that are really throwing me for a loop: 1. Based on 500 people a researcher calculates the 95% confidence interval for the population proportion p: 0.123
asked by Joanne 
Algebra
The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this
asked by Kris 
Algebra
The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this
asked by Kris 
Algebra
How do you know if a value is a solution for an inequality? how is this different from determining if a value is a solution to an equation?, write an inequality and provide a value that may or may not be a solution to the inequality
asked by olabisi 
Chemistry
The freezing point of a solution is A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. lower than the freezing point of
asked by Blair 
Math
(3x^2 +5x)  (2x^2 – 3x +2)
asked by Marilyn 
Math
(x + 3)(x^2 – 2x + 7)
asked by Marilyn 
Chemistry
The molarity and the molality of a solution prepared by dissolving 2.00 g of ethanol C2H5OH with 99.0 g of water to give a final volume 101 mL are ______Molarity and _______molality. How do I do this?
asked by Blair 
human resources
Out of three heuristic types, which one is most commonly used?
asked by shelly 
com 140
In additionto WritePoint and the Plagiarism checker, what other resources are available at the The Center for Writing Excellence? What information do these other resources provide? ?Identify which two online resources may be most useful in building your
asked by ano 
Critical Thinking
Identify any examples of fallacies in the following passages. Tell why you think these are fallacies, and identify which category they belong in, if they fit any category we’ve described. 1.Letter to the editor: “Andrea Keene’s selective morality is
asked by Nikia walker 
accounting
can anyone tell me how accountants are included when managers of business organizations formulate longterm plans?
asked by Anonymous 
english
What follows a linking or action verb? What modifies nouns or pronouns?
asked by lamoura 
Binomal Theorem
1A> What is the coefficient of x^(2r) in the expansion of (1x^2)^n, where n is a positive integer ? 1B> Find the coefficient of (1+x)^7 (1x) ^8 Thanks for your help :)
asked by Tommy 
business
You have recently been hired as a new manager hired into a failing division in a company. The product line is outdated and losing market share, interdepartmental communication is adversarial, and competition for corporate funding is fierce. How are you, a
asked by Ronald 
algebra
why does the inequality sign change when both sides are multiplied or divided by a negative number? give examples of translate sentences into inequation
asked by olabisi 
literature
It is always "safety first" when working at sea, because no fiisherman wants to be the one who doesn't return, leaving a grieving family behind. What does it mean for a fishermans family to be greiving?
asked by Anonymous 
math
what is a place value
asked by jamal 
Precalc (LOGS)
1. (e^x  1 )/(x^2  1) < 0 2. The inverse of ln (3  x) ? 3. Simplify x^3  3x^2 + 2 = 0 Any help would be GREATLY appreciated. Thank you so much for your time.
asked by Joe 
Stats
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash
asked by T 
algebra lll
find the value: 5 plus 8 . 2 divide by 4 11
asked by angela 
calculus
How do I find the domain of: y=squareroot of x^33x^2 ?
asked by Chan 
chemistry
Explain what a saturated solution is. Give a specific example.
asked by kayla 
health
A Patient in need of treatment for the correction of a malocclusion would visit a/an? periodontists endodontists orthodontists pedodontists Thanks
asked by hotsuz21 
finance
the company has agreed that the required contribution will grow by 3.2 percent per year. When should the company harvest the forest?
asked by Sherrill 
accounting
Why are ethics so important in the field of accounting?
asked by Anonymous 
literature
What are at least two things that look sleek?
asked by Anonymous 
Accounting
Use the Internet to select a publicly traded company that you believe works with cost information. • Due Date: Day 7 [Individual] forum • Organize your thoughts in a 2,100 to 2,800word paper. Citations of original works within the presentation must
asked by Weedro 
World History/Social Studies
The Jews who lived scattered around outside of Judah are called A menorah B plethora C Diaspora D aurora I think that it is menorah
asked by calico7 
AE
What are the implications of NCLB on teachers; on students in the classroom; and on schools and school districts?
asked by scooby91320002 
World History
Sumerian women had the rights to buy and sell property and _______. A write wills B become rulers C go to school D run business I think it is A or D but I'm not sure at all
asked by calico7 
Biology
most polar molecules and ions cannot enter cells. why? many food particles are polar how do they get into the cell?
asked by Courtney 
MAth
What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your
asked by dawn 
Psychology
How do selfconcept, selfesteem and selfidentity differ?
asked by Nikia walker 
Language Arts
What do you have to do and where do you have to go to get a book published? what are the requirements?
asked by Summer 
biology
what is the the equation for photosynthesis?
asked by joshua