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2009
March

Questions Asked on March 1, 2009

PartA: What volume of 10.0M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? TrisHCl is a weak
1. 30 answers
2. asked by Raj
3. 6,175 views
Methyl violet is an indicator that changes color over a range from pH=0 to pH=1.6. What is the Ka of methyl violet?
1. 6 answers
2. asked by che,
3. 5,086 views
when 3g^2-4g+2 is subtracted from 7g^2+5g-1, what is the difference?
1. 5 answers
2. asked by Angie
3. 4,406 views
A bucket contains orange tennis balls and yellow tennis balls from which 5 balls are selected at random, but assume that the
1. 4 answers
2. asked by Sigmund
3. 3,596 views
Use the dilution relationship (Mi x Vi = Mf x Vf) to calculate the volume of 0.500 M NaOH needed to prepare 500 mL of .250 M
1. 5 answers
2. asked by Bob
3. 3,204 views
true or false:ecosystems with a lot of water support fewer organisms than ecosystems with little water?
1. 5 answers
2. asked by Bibi 17
3. 3,029 views
which value of x makes the expression x+4/x-3 undefined and why?a. -4 b. -3 c. 3 d. 0
1. 1 answer
2. asked by Angie
3. 1,998 views
A flagpole casts a shadow 27 feet long. A person standing nearby nearly casts a shadow 8 feet long. If the person is 6 feet
1. 4 answers
2. asked by ANdRAYiA
3. 1,847 views
Assume that 3 digits are selected at random from the set {1,3,5,6,7,9} and are arranged in random order.What is the probability
1. 1 answer
2. asked by Willow
3. 1,737 views
For what value of the constant (c) does the system of equations below have no solutions (x,y)?3x - 5y = -2.3 6x - cy + 9.3 How
1. 1 answer
2. asked by Cassie
3. 1,587 views
Question: Consider following equilibrium system: SO2(g)+ Cl2(g) goes to So2Cl2(g) Kp=.900 atm @25 degree C. Suppose that 2.0
1. 5 answers
2. asked by eliz
3. 1,575 views
You push an air-hockey puck along a surface with negligible friction while riding in a truck as it moves at a constant velocity
1. 1 answer
2. asked by Katja
3. 1,458 views
1) For each of the following statements, formulate appropriate null and alternative hypotheses. Indicate whether the appropriate
1. 4 answers
2. asked by Stuart
3. 1,350 views
The sum of the charges of the quarks in a particles gives the overall charge of the particles. Two up quarks and a down quark
1. 1 answer
2. asked by Cassie
3. 1,335 views
Sorry to double pos, I just really need help whit this.You push an air-hockey puck along a surface with negligible friction
1. 4 answers
2. asked by Katja
3. 1,317 views
Assume that there are 16 frozen dinners: 8 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them.What is the
1. 1 answer
2. asked by Sigmund
3. 1,290 views
How might the chewing of food be related to the rate of a chemical reaction-digestion- that occurs in your body? explain
1. 2 answers
2. asked by me
3. 1,126 views
You need to produce a buffer solution that has a pH of 5.08. You already have a solution that contains 10 mmol (millimoles) of
1. 2 answers
2. asked by chem
3. 1,109 views
Where do metamorphic rocks originate? How are they formed?o What are the two categories of metamorphic rocks? What are the
1. 1 answer
2. asked by Zan
3. 1,094 views
A set of telephone lines is to be installed so as to connect between town A and town B. The town A has 2000 telephones. If each
1. 3 answers
2. asked by Edward
3. 1,063 views
I am doing a 6th grade country report on Iceland and I need the following information:Iceland's lower courts -and- Iceland's
1. 6 answers
2. asked by Chase
3. 1,047 views
A forearm with a mass of 1.2kg supports a ball with a mass of 5.44 kg. The forearm is 0.050m long; it's perpendicular to the arm
1. 3 answers
2. asked by Sukie
3. 1,005 views
Methyl violet is an indicator that changes color over a range from PH = 0 to PH= 1.6. What is K(a) of methyl violet?------------
1. 2 answers
2. asked by julian
3. 984 views
a hiker walks 10.0km(NE), 5.0 (W) and then 2.0km(S) in 2.5h. What is the hikers displacement?
1. 1 answer
2. asked by alexia
3. 983 views
I owe my success to having listened respectfully to the very best advice, and then going away and doing the exact opposite. --G.
1. 7 answers
2. asked by Sahil
3. 976 views
What is one word to describe the middle colonies?
1. 2 answers
2. asked by Alex
3. 949 views
What about combustion reactions makes them different from either synthesis or decomposition reactions?
1. 1 answer
2. asked by me
3. 945 views
Bond ConversionThe tramot corporation has $2,000,000 of 6 percent bonds outstanding. There is $40,000 of unamoritized discount
1. 1 answer
2. asked by Fantasy
3. 945 views
What are some similarities and differences across cultures?
1. 2 answers
2. asked by lois
3. 940 views
For what value of the constant (c) does the system of equations below have no solutions (x,y)?3x - 5y = -2.3 6x - cy + 9.3 How
1. 2 answers
2. asked by Cassie
3. 898 views
Hi, I'm doing some questions about comparing and contrasting sonnet 130 and sonnet 18. Could you help me with this one question
1. 2 answers
2. asked by Stacy L.
3. 875 views
Ammonia,is a weak base with a Ka value of 1.8x10^-5 .What is the pH of a 0.22M ammonia solution?
1. 4 answers
2. asked by chem
3. 867 views
calculate the pH at 0ml at the quivalence point and at 40ml in a titration of 25 ml of .120M formic acid with .105M NaOH(kA of
1. 1 answer
2. asked by Gagan
3. 856 views
4.82 mL of a 0.262 M NaOH solution reacts completly with 4.79 mL of HCl solution according to the balanced chemical reaction
1. 2 answers
2. asked by Bob
3. 841 views
In 3-space, a plane abc is spanned by three points a, b, c. The point x does not lie on this plane.I'm trying to find the
1. 1 answer
2. asked by Nikki
3. 813 views
Posted by shortee on Saturday, February 28, 2009 at 7:16pm.Okay, so i need help finding my independent, dependent, and control
1. 1 answer
2. asked by Writeacher
3. 807 views
A set of telephone lines is to be installed so as to connect between town A and town B. The town A has 2000 telephones. If each
1. 0 answers
2. asked by Edward
3. 794 views
Hey i need help on my math hw i just don't get it lol please help me!Here the questions Which of the following equations has a
1. 5 answers
2. asked by please help me
3. 768 views
What is the purpose of writing sonnet 130?
1. 3 answers
2. asked by Stacy L.
3. 762 views
A daredevil attempts to swing from the roof of a 24m high bulding to the bottom of an identical building using a 24m rope. He
1. 4 answers
2. asked by Aaron
3. 762 views
I am writing a character analysis of Laura from The Glass Menagerie, and I need to use quotations from the play. How do you cite
1. 2 answers
2. asked by Katie
3. 737 views
Ryan estimates the measurement of the volume of a popcorn container to be 282 cubic inches. The actual volume of the popcorn
1. 1 answer
2. asked by Julie
3. 734 views
Trevor and his 2 brothers and 5 friends are seated at random in a row of 8 seats at the cinema. What is the probability that
1. 6 answers
2. asked by smart guy
3. 732 views
I need help. Here's the queston.Julia has 3 red marbles, 4 blues,3 yellow and 6 black in a bag. She takes one out at random. The
1. 2 answers
2. asked by Mark
3. 716 views
1. Calculate the frequency (Hz) and energy (eV) of green photons with wavelength of 555nm. Photon energy = hν, where ν =
1. 1 answer
2. asked by JeFF
3. 697 views
what will be the final temperature of a 514-g sample of water, intially at 10.0 celsius, after 90.8 kilo joules have been added
1. 2 answers
2. asked by queen
3. 682 views
Suppose you are at the gas station filling your tank with gas, The function C(g) represents the cost C of filling the tank up
1. 3 answers
2. asked by A.W.
3. 661 views
what is the comparison of normal and abnormal chroasome (when the abnormal is the alexander disease)
1. 1 answer
2. asked by my name
3. 660 views
A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2.If 1.00 ml of 12 M HCl is added to this, what will be
1. 0 answers
2. asked by chma11 student
3. 641 views
(-7yt)/(3x)=?/(18xyt)Building up the denominator Build each rational expression into an equivalent rational expression with the
1. 1 answer
2. asked by jackie
3. 637 views
what is pitch? what are the levels of pitch? what are some example of activities regarding pitch? nee your response as soon as
1. 2 answers
2. asked by rosette
3. 627 views
Can the word amazingly be used as a present participle at the beginning of a sentence:Amazingly more players aren't worried
1. 7 answers
2. asked by Mike
3. 625 views
The sum of the charges of the quarks in a particles gives the overall charge of the particles. Two up quarks and a down quark
1. 0 answers
2. asked by Cassie
3. 625 views
Suppose the population of Area Y is relatively young and the population of Area O is relatively old. Would interest rates likely
1. 1 answer
2. asked by Jason
3. 617 views
Could you please correct my essay?The magic carpet Once very hot day, I was looking for my criket bat down in the basement. I
1. 1 answer
2. asked by BRENDON
3. 611 views
tom's work is 18km away, he starts walking to work at 5:30. He walks 4km every hour. His work opens at 9:00 will he be on time?s
1. 5 answers
2. asked by sam
3. 600 views
Find the percent using the percet proportion.54 patients is what percent of 900 patients? The percents is___%
1. 7 answers
2. asked by Jamar
3. 585 views
Hey i need help on my math hw i just don't get it lol please help me!Here the questions Which of the following equations has a
1. 2 answers
2. asked by Anonymous
3. 583 views
what is the comparison of normal and abnormal chroasome (when the abnormal is the alexander disease)
1. 1 answer
2. asked by chad da hottie
3. 576 views
Who is the audience?
1. 1 answer
2. asked by Stacy L.
3. 567 views
a strongly help purpose or goal ???
1. 3 answers
2. asked by Anonymous
3. 563 views
Assume that there are 16 frozen dinners: 8 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them.What is the
1. 1 answer
2. asked by Sigmund
3. 560 views
-7yt/3x=? /18xytBuild each rational expression into an equivalent rational expression with the indicated denominator.
1. 1 answer
2. asked by help please
3. 558 views
What is the environmental influence of the alexander disease?If you don't know can you at least explain what that question
1. 2 answers
2. asked by I NEED HELP
3. 556 views
Can somebody help me find the slope? Examine the rise in gasoline prices from 1997 to 2006. The price of regular unleaded
1. 2 answers
2. asked by A.W.
3. 541 views
I need to present the most important facts about immigration in the 1920's. i.e. what acts where passed, who was for/against it,
1. 2 answers
2. asked by Ella
3. 539 views
Where in the human body is chromasome 17 located ( i mean like is it in the arm, leg, head). If possible, i would also like to
1. 2 answers
2. asked by Amanda
3. 524 views
Sorry, I have another question about Iceland's government. :)It wants to know What is (are) thename of the house(s) of
1. 4 answers
2. asked by Chase
3. 518 views
Genelaized reciprocity,Balanced reciprocity, which one would more likely to be used by used car salesman? why?
1. 8 answers
2. asked by mimi
3. 513 views
hi againwhy is mentally ed person not like a normal person is what i meant thanks again
1. 1 answer
2. asked by lila
3. 508 views
Can you fine a love poem with ten syllables in it?
1. 2 answers
2. asked by lashay
3. 501 views
How many Amino Acids is in the protein insulin?
1. 2 answers
2. asked by Samy
3. 500 views
alan wants to raise his grade from an 83 to 90 approx what precentage increase would that be?
1. 3 answers
2. asked by Carry
3. 494 views
what evidence shows that the burning of methane is a chemical reaction?
1. 0 answers
2. asked by me
3. 492 views
Telephoto lens. Use the formula from Exercise 67 to find the image distance i for an object that is 2,000,000 mm from a 250-mm
1. 1 answer
2. asked by help please
3. 486 views
Is the thesis statement the same thing as the main point?
1. 2 answers
2. asked by LOu
3. 485 views
5/(y-3)=(y+7)/(2y-6)i got no solution and i got y=3. Solve each equation. Watch for extraneous solutions.
1. 1 answer
2. asked by jackie
3. 484 views
Which is considered better therapeutic cloning or reproductive cloning? And what would be three main reasons why it is?
1. 5 answers
2. asked by Michele
3. 479 views
Where can I find some negative benefits of Reproductive Cloning at? I found the positives for Reproductive and Therapeutic
1. 1 answer
2. asked by Michele
3. 474 views
Identify the percent, whole, and part in the following.13 is 2% of what number of injections?
1. 6 answers
2. asked by Elliot
3. 463 views
halo my question iswhy is a mentally handicapped person not like normal people thanks for the help
1. 1 answer
2. asked by lila
3. 452 views
WHat is a spacific word for awful ?
1. 4 answers
2. asked by kolen
3. 451 views
Describe how criminal resposability can be limited
1. 1 answer
2. asked by Adriana
3. 451 views
Does anyone know any good websites that has notes/ essays, or any resources on It takes a family by Santorum
1. 1 answer
2. asked by Jen
3. 450 views
Write the percent as a decimal.43%=___
1. 4 answers
2. asked by Elliot
3. 449 views
How do I figure these 2 out.Find standard form a +bi (4 square root -9) ( -3 square root -5) x^2 -3x+4 evaluated for x=1+i
1. 3 answers
2. asked by lt
3. 448 views
How many amino acids are in the protein insulin???
1. 1 answer
2. asked by Sam
3. 447 views
Can someone help me figure out the overall tone of the poem
1. 2 answers
2. asked by Literature Help
3. 445 views
Does anyone know how long Hester Prynne in "the Scarlet Letter" was hold in jail (approximately) Thank you so much!!!
1. 0 answers
2. asked by Brielle
3. 442 views
I am finding absolute and relative differences in excel. I have a compared value of 1.00 (D6) and a reference value of 38.50
1. 1 answer
2. asked by Emily
3. 439 views
Can you describe the characters’ personalities from the point of view of Jung, Freud, and Rogers.?
1. 1 answer
2. asked by Ryan
3. 439 views
A forearm with a mass of 1.2kg supports a ball with a mass of 5.44 kg. The forearm is 0.050m long; it's perpendicular to the arm
1. 0 answers
2. asked by Sukie
3. 433 views
what were the natural resources in Early china's Ciliviations and how were they used.i need help, I cant seem to find this
1. 1 answer
2. asked by sam
3. 429 views
Please simplify. Write your answer using positive exponents.(8^2)^ -1 =? In case you are having trouble reading it, it
1. 1 answer
2. asked by Tia
3. 428 views
Does this sentence begin with a prepositional phrase:Across the fence the ball soared, and that's when you gave me the Wagner
1. 2 answers
2. asked by Mike
3. 428 views
how do you factor 16x^2-25y^2?
1. 1 answer
2. asked by Angie
3. 426 views
what is the seven taxa that identify Drosophila melanogaster?i cant find this anywhere.. thanks!
1. 1 answer
2. asked by anonymous
3. 423 views
How do I round 14 hours and 54 minutes to the nearest half hour?
1. 1 answer
2. asked by TROY
3. 403 views
the patient had a diagnosis of addison's disease, which is caused by decreased functioning of the adrenal cortex. which of the
1. 1 answer
2. asked by nette
3. 398 views
what is the name of the pictures of chromasomes that are arranged according to size and pattern
1. 1 answer
2. asked by in need of help
3. 397 views

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