Questions Asked on
July 13, 2009

chemistry some help plzz totally lost on this one
Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.70. You have in front of you * 100 mL of 7.00×10−2 M HCl * 100 mL of 5.00×10−2 M NaOH, and * plenty of distilled water. You start to add HCl to a beaker of
asked by DrFunk 
math
juana threw five darts at a dartboard. the possible scores on a target were 2,4,6,8 and 10. each dart hit the target. which of these total score can be identified as "not possible": 38,23,58,30,42,31,26,6,14, or 15?
asked by jeury 
chemistry help!!
A beaker with 195 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.20 mL of a 0.260 it M HCl solution to the beaker. How much will the pH
asked by DrFunk 
Physics 20
A 2.50kg Pendulum is attatched to a string 11.4m stringis pulled aside until it is.386m above its lowest position and released. The pendulum is designed to emit sound waves at a frequency of 440 Hz; However, as it swings toward and away from an observer,
asked by Moe 
MATH
Admission to a museum is $10 for each adult and $5 for each child. If a group oh 30 people pays a total of $175 in admission how many adults are in the group?
asked by christina 
English
What is the final lesson in "The Lost Horse" ?
asked by Tatianna 
Math
Stephanie can clean a pool in 1 hour , and Mark can clean the same pool in 1.5 hours. If the rate at which they work together is the sum of their rates working separately, how many minutes should they need to clean the pool if they work together? (1 hr=60
asked by Jay 
algebra
perform operatiion 2a²/ * 2a+2/ 3a² 15a³
asked by Sandra 
CHEMISTRY HELP!
(1) A beaker with 165 mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of the acid and conjugate base in the buffer is 0.100M. A student adds 7.20mL of a 0.320M HCl solution to the beaker. How much will the pH
asked by Ashley 
English Comp.
Please check for errors. If there are any, please state them at the end of my essay. Please help me out because it is do at 3 today. Neat vs. Sloppy Many people will consider themselves a very neat person, but are they really neat or sloppy? Often, people
asked by betty 
English
Can Someone comment on how well i did my my poem please. Drive No where to go Nothing to see, I just want to drive, Drive away, you and me. We don’t have to go fast we can go slow there is no first or last, as long as you go. My future with you I have
asked by Anonymous 
Math
A worker tearing down a barn uses a crowbar 4feet long with the shorter end being 2 inches from the fulcrum. If the worker can exert a force of 150lbs at one end of the crowbar, how great a force can be exerted at the other end? (Note the differences in
asked by Al 
Economics
I am having problems figuring out how to set this problem up. Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You
asked by TrickyEcon 
English
1. The balls under the desk are some. 2. There are some balls on the desk. (#2 is correct, right? What about #1? Is it OK?)
asked by John 
phyilosophy
happiness where spiritual traditions are in conflict with science and contemporary life.
asked by Donna 
MATH
chris buys a chocolate bar and a pack of gum for 1.75 if the chocolate bar costs .25 more than the pack of gum how much does the pack of gum costs?
asked by christina 
Grammar
Are these sentence's punctuated correctly? The new heart clinic is located at 555 NW First Street, Seattle Washington 98104. Transcription should be interesting, educational, always challenging, and, most of all, fun. Additionally, anesthesia was given by
asked by shelby 
Environmental Management
A. The 95% confidence interval is: (a) Larger than the 99% confidence interval (b) Smaller than the 99% confidence interval (c) The same as the 99% confidence interval
asked by Jox 
English Man for all Seasons
Heyy! well my question is in regards to man for all seasons a play by robert bolt. we are asked to identify a living person that resembles the "common man" character. the common man resembles the masses, he has a passive attitude of the world, and refuses
asked by Me 
math
How much interest is earned from a $3,000 investment at an annual rate of 4% compounded quarterly for 2 years?
asked by Anonymous 
ARt
Different colors can give different feelings. Would you let me know good websites about that?
asked by John 
billing and coding
explain how evaluation and management codes are grouped
asked by angela 
algebra
Build each rational expression into an equivalent rational expression with the indicated denominator (7yt)/(3x) =(?)/(18xyt)
asked by Sandra 
algebra
Perform the indicated operation (2a²)/(3a²) X (20a)/(15a³)
asked by Sandra 
algebra
Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 4/xy , 5/2y2x
asked by Joe 
chemistry
What is the pH of the solution created by combining 0.80 mL of the 0.10 M NaOH(aq)with 8.00 mL of the 0.10 M HC2H3O2(aq)?
asked by Anonymous 
algebra
Simplify each complex fraction. Reduce each answer to lowest terms. ab+b^2/4ab^ 5 _______________ a+b/6a^2b^2
asked by Sandra 
economics
distinguish between the individual supply curve and the market supply curve
asked by AJ 
history
How did the U.S. economy change after WWII ended compared to what it had been like during the war? Use specific examples of what people were able to have and to do, and what it must have felt like after the scarcity of their wartime experience.
asked by scooby9132002 
medical billing and coding
discuss coding for obstetrics, including items covered by the golbal fee for anterpartum and postpartum periods of normal pregnancy
asked by angela 
Grammar
Are these sentence's correctly punctuated? The motor vehicle accident, however, was not the patient's fault. Dr. Jones is an excellent surgeon, but does not have a good bedside manner. She was tried on various antibiotics, and an infectious disease
asked by shelby 
Grammar
Are these sentence's punctuated correctly? Differential diagnoses include: Diabetes, adultonset Cholelithiasis, acute Endocarditis, subacute This year she'll have a breast augmentation, and next year she will have an abdominoplasty. It should snow in the
asked by shelby 
algebra
Perform operation 3/ * 2a+2/ a²+a 6
asked by Sandra 
algebra
Worker efficiency. In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)=3t+23t^2+8t
asked by Sandra 
Business Law
While Mr And Mrs Lowell was on a cruiseship vactioning their cabin was broken into and valueables were stolen they were looked in the bathroom while this was happening Mr Lowell sufferd a heart at?
asked by Anonymous 
algebra
what is the negative reciprocal of 7/3
asked by maria 
sociology
The iranian legal system is more focused on protecting the rights of crime victims ( and their relatives) than is the law in the united states. Should our courts move in this direction?
asked by tiffany 
SCI 275
The Population Size explain the four factors that produce changes in population size. Which factors are affecting the population size in the video? What do you predict will happen to the nutria population ater all the land is depleted of the nutrias' food
asked by CC 
english
I need to find a good quote from Act 4 in the novel The Crucible that is very important.
asked by Mary 
writing
In what ways are purpose, audience,tone and content different for interpersonal and business communication
asked by yolanda 
Math
Lear, Inc., has $800,000 in current assets, $350,000 of which are considered permanent current assets. In addition, the firm has $600,000 invested in fixed assets. a. Lear wishes to finance all fixed assets and half of its permanent current assets with
asked by janay1978 
geometry
Find the volume of a rectangular solid with the following dimensions: 2.3 cm x 4.6 cm x 7.8 cm
asked by shannon 
Health Care
is dazzlewhite a good thing to use to whiten your teeth?
asked by Angelica 
math/urgent
PLEASE tell me how you are supposed to come to the answer to this. and what is the answer: a number x is y more than a number y times x i'm a little confused, and i have to teach this to a student. thanks a lot
asked by y912f 
algebra
Reduce to simplest terms,rational expression 2x8 ______ x^2+2x8
asked by Sandra 
science
Which one of the following is a source of chemical weathering? A. The abrasion of running water B. Water freezing in the cracks of exposed rocks C. The effects of acid from decaying animals D. The growth of mosses in the cracks of rocks i think its b or c
asked by me 
Communication Theory
An objective theory is good in the eyes of an interpretive researcher if the explanation of communication behavior leads to further understanding of _________?
asked by Crystal 
Essay writing
what makes an authors argument compeling
asked by Cynthia 
AP Economics
Describe why every decision involves tradeoff. Can you please explain it to me.I don't get it!!!
asked by Anonymous 
MATH
Three integers have a sum of 7 and a product of 0. If the difference of the greatest number and the least number is 11, then the least of these numbers is?
asked by christina 
economics
explain how the principle of diminishing marginal utility is related to the downward sloping demand curve?
asked by AJ 
science
What occurs in wind erosion? A. Wet soil is transported away. B. Dry soil is transported away. C. Small rocks are left behind. D. Large rocks are left behind. is it b or d
asked by me 
algebra
correction to previous problem should read: (w^21)/(w1) x (w1)/(w^2+2w+1)
asked by Joe 
algebra
Perform the indicated operation (w^21)/(w1) x (w^2+2w+1)
asked by Joe 
algebra
Solve each equation. Watch for extraneous solutions 5/y3 = y+7/2y6 +1
asked by Joe 
math
Estimate the drop in the Dow Jones Industrial Average if it falls 5% from its value of 10,637
asked by Anonymous 
sociology
if united states support capital punishment would be willing t abandon it if convicted murderers could be sentenced to life imprisonment with absolutely no chance of parole? similarly if united states oppose the death penalty would they change their
asked by pam 
Algebra
Please Solve: (x+3)(x5)< 0
asked by Carmin 
Chemistry
What is the molecular formula of water?
asked by Nimmy 
Accountingbusiness
Your uncle offers you a choice of $30,000 in 50 years or $95 today. If money is discounted at 12 percent, which should you choose? Can anyone tell me if this is right and if not what am I doing wrong. 30,000 x 0.003 = $90 Option 2: PV = $95
asked by Tammy 
tenison
square root for 8
asked by matin 
Communication Theory
Aristotle divided persuasion into three kinds of strategies called________.? These three where ___ ___ ____???
asked by Alyssa 
Communication Studies
An objective theory is good in the eyes of an interpretive researcher if the explanation of communication behavior leads to further understanding of ________________. ?
asked by Audrey 
medical billing
Differentiate between the official coding guidelines for using V codes in an inpatient and outpatient setting.
asked by angela 
billing and coding
Explain the importance of a fee schedule and the factors it's based on.
asked by angela 
Grammar
Are these sentence's punctuated correctly? Depression, often a genetic disorder, can be safely treated with medication. Infection, for example, can be a complication of surgery. Having been up late last night, I may not make our lunch date.
asked by shelby 
Health Care
how do you use baking soda and salt to whiten your teeth. if you can then please do list some directions, thanks
asked by Angelica 
economics
describe the difference between the income effect and the substitution effect
asked by AJ 
Man for All Seasons
Hi!!! Does anyone know a modern example of the common man. HE has to be ALIVE!!! Thanks
asked by Me 
english
please help me analyze the tone of Another Writer's Beginnings by Sasaki. is it honest or sentimental? provide reasons.
asked by bindiya farswani 
Algebra II
Factor Completely: x^22x99
asked by Cecilia 
math
1 yard is how many feet
asked by tracy 
light
I know that when a light ray refracts towards the normal, it means that it's perpendicular. But what is it refracting towards the normal with respect to?
asked by Anonymous 
global
What is carthage?
asked by Anonymous 
algebra
Solve the equation 3/x = x/3
asked by Maria 
sociology
what are the advantages and disadvantages of explicitly grounding a legal system in a particular religious tradition? Should the united states attempt t integrate christianity into its criminal justice system, as some conservatives recommend?
asked by tiffany 
Algebra
solve the equation x/3 = 4/x+1
asked by Maria 
algebra
Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. a^2b^2/ab
asked by Sandra 
algebra
Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. 4x^2/2x^9
asked by Sandra 
Math
Solve: (32)  (23)
asked by Jack 
math
Solve : 9x^2 over 144  4 over 25
asked by Mike 
chemistry
your experiment yielded 50kg of NaCl (D= 4.5g/ml. What volume of your yield is this in liters?
asked by anthony 
sociology
why is the united states is the only remaining postmodern nation that retains the death penalty?
asked by pam 
English
Does anyone know a site where, I can get a summary for The Magus by John Fowles? I need help in describing 3 settings, inciting moment, 3 conflicts/crises, climax, falling action, 5 themes, and the ending.
asked by Patel 
business
What strategies can you use to incorporate effective visual elements into business presentations?
asked by mya