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December 21, 2014

Posts by Ana


Total # Posts: 1,017

marketing assignments
I've done my assignment but i've not done the citations. can u help me
February 4, 2011

chemistry
How many grams of sodium chloride are needed to prepare a 0.400m NaCl solution that contains 750g of water?
February 3, 2011

math
Sketch an area model for each exercise then find the product. 74x92
February 2, 2011

Spelling
Man woman curved
February 1, 2011

physics
A flat horizontal surface with an area of 650 cm2 is inside a uniform electric field of 2.99×104 N/C. The angle between the area vector and the electric field is 14.8°. What is the electric flux through the surface?
January 30, 2011

Math
A walks 2Km south to B, she the walks 3km west to C. Find the distance and bearing from C and A
January 25, 2011

math
Convert the base-ten number to a numeral in the indicated base. 40 to base two
January 24, 2011

Chemistry
What is the mathematical relationship between pressure and temperature?
January 20, 2011

alg.2
solve by elimination x+3y=0 2x+6y=5
January 19, 2011

ChemII
450 grams
January 9, 2011

geometry
ABCD is a parallelogram. solve for x and find the lengths of BC=16+2x and AD=10+8x
January 4, 2011

AP Chemistry
(pure CH3COOH) Ka = 1.8 x 10-5 sodium acetate NaCH3COO CH3COOH --> CH3COO + H Ka= [H+][CH3COO-]/[CH3COOH] = 1.8 x10^-5 [H+]= 4.85 pH = pKa + log [base]/[acid] 5.0 (chosen pH of buffer) = 4.85 + log [base]/[acid] .15 = log [base]/[acid] 10^0.15 = [1.41 M]/[1 M]
January 3, 2011

AP Chemistry
We're doing a lab in my class and we're supposed to make a buffer at a certain pH. I have decided to make a buffer with a pH of 5.0 using glacial acetic acid (pure CH3COOH) and sodium acetate. I found that the ratio of acid to base is 1.41 M: 1.0 M and now I'm ...
January 3, 2011

math
The discriminant of a quadratic equation is 35. The roots are: a) unequal rational numbers b) unequal irrational numbers c) equal rational numbers d) imaginary numbers Please explain.
December 27, 2010

Algebra
oops not done. (7/6 a) / 7/6 = (5/3 b + C)/ 7/6 a = (5/3 b + C)*(6/7) a = 10/7 b + 6/7 C
December 18, 2010

Algebra
C = 1/6 (10b-7a) C = (1/6*10b) - (1/6*7a) C = 5/3 b - 7/6 a +7/6 a +7/6 a C + 7/6 a = 5/3 b -C -C 7/6 a = 5/3 b + C
December 18, 2010

English
I'm trying to write a short story and there's an intense and mysterious scene that I'm writing. How do I make the scene more intense?
December 18, 2010

Math
Clara is placing the library books in counting order on the shelves. She has books numbered 849, 853, 774,and 836. How will she put them on the shelves.
December 15, 2010

biology
explain why mutations are almost always neutral or harmful
December 14, 2010

chemisty
600 mL of an unknown monoprotic acid was titrated with a standard solution of a 1.0 M base. If it took 40.0 mL of the base to neutralize the acid, what was the H+ ion concentration of the acid in moles per Liter?
December 14, 2010

Chemistry
Given a solution of ammonium chloride. What additional reagent or reagents are added to prepare a buffer from the ammonium chloride solution? I know the answer is NaOH but I don't know why. Can someone explain this to me please?
December 14, 2010

english
whats the crossing the threshold for shrek the mivie?
December 9, 2010

Teachers aide
music or words for four children's songs 2 must be from other cultures.must write song title, the name of the person who wrote it, the publisher's name and city and the copyright date. title: words by: music by: publisher,city,country: copyright date: please help!!!
December 8, 2010

Teachers aide
5 pamplets or copies that help parents understand how children grow and learn.
December 8, 2010

Math
What is the number of vertices of a triangular pyramid?
December 5, 2010

Math
Fill in the blank so that the given statement is true. The median is 77 65,68,78,82,89,__
December 5, 2010

Math
Fill in the blank so that the given statement is true. The median is 77 65,68,78,82,89,__
December 5, 2010

Math
<D=12 <G=118 ???
December 5, 2010

Math
<D is complentary to <E and <D is supplementary to <G If the measure of <E is 78 find the measure of <D and <G
December 5, 2010

Mathh
<D is complentary to <E and <D is supplementary to <G If the measure of <E is 78 find the measure of <D and <G
December 5, 2010

Chemistry
Thanks so much. Especially for the ion list link. :)
November 28, 2010

Chemistry
How do I figure out what ions are present in a compound? Is it as simple as separating the compound? Like HCl --> H+, Cl-
November 28, 2010

Chemistry
So I mixed 25 mL of 0.002 M KSCN and 25 mL of water in a beaker. The solution was clear with no precipitants. But then it says the ions present in KSCN are: so i put K+,S2- , CN- is that right?
November 28, 2010

accounting
Alik Amal is a bar in Panama City, Florida. In April 2008, rowdy spring break guests damaged a jukebox that had been purchased in 1995 for $800. The jukebox had a useful life o1 ten years, with an estimated salvage value of $75. Alik AmaI decided to scrap the jukebox after the...
November 23, 2010

accounting
Glenmore Corp. purchased a fax machine at the beginning of 2007. The fmx machine cost s1,000 and is expected to last live years Its salvage value is expedted to be $50. It Glenmmore uses straight-line depreciabon, what will the fax mactiines net book value be at the end of 2008?
November 22, 2010

accounting
Adnan's Flower Shop provides floral arrangements for holidays and events. Adflans sold Oxford Cdy Hall a holiday arrangement for 10,000 on account in November Due to a government shutdown in December, Oxford only paid $1,500 otthe amount due within the prescribed period. ...
November 13, 2010

Chemistry
How do I predict whether the equilibrium lies to the right or left of an Acid-base equation? O[2-](aq) + H2O(l) <--> OH[-] + OH[-]
November 10, 2010

Chemistry
How do I predict whether the equilibrium lies to the right or left of an Acid-base equation?
November 9, 2010

budget and forecasting
19.0
October 31, 2010

English
I don't understand the concept of direct objects just yet. Okay, take the sentence, "Some reach a height of 120 feet." The comments above say it is transitional, but why? What is the direct verb?
October 28, 2010

math!!!!!!! help 3
that did not help me
October 27, 2010

Chemistry
What minimum number of moles of NH4Cl must be added to 1.0 liter of solution that is 0.10 M in Mg(NO3)2 and 1.0 M in NH3 to prevent precipitation of Mg(No3)2?
October 24, 2010

Chemistry
the energy from radiation can be used to cause the rupture of chemicals bonds. a minimum energy of 495 kj/mol is required to break the oxygen- oxygen bond in o2. what is the longest wavelength of radiation that possesses the necessary energy to break the bond?
October 24, 2010

Math
a=2a/(a-5) How do I work this out?
October 23, 2010

Chemistry
I don't understand this question and answer can someone help me? In order to exhibit delocalized pi bonding, a molecule must have . At least resonance 2 resonance structures. & In comparing the same two atoms bonded together, the greater the bond order, the shorter the ...
October 20, 2010

Chemistry
In comparing the same two atoms bonded together, the greater the bond order, the shorter the bond length, and the greater the bond energy. Why is this the case?
October 19, 2010

AP Chemistry
I don't understand this question and answer can someone help me? In order to exhibit delocalized pi bonding, a molecule must have . At least resonance 2 resonance structures.
October 19, 2010

english
I have to write a thoughtful composition on the following: Gothic novels emphasize horror, mystery, and the supernatural. Write an analysis of the gothic features of the nvel Frankenstein that are evident in Chapters 1 through 8. How does she Shelley establish an atmosphere of...
October 19, 2010

chemistry
Ok so im just totally confused because i dont technically have chemistry teacher (i have cancer so i cant go to school so while i have a teacher i can email questions to, he doesnt really help so im stuck teaching myself) & i didn't get any reference to make i sure i got ...
October 9, 2010

math
The following table gives the cost and revenue, in dollars, for different production levels, q. Answer the questions below. q 0 100 200 300 400 500 600 R(q) 0 450 900 1350 1800 2250 2700 C(q) 670 865 990 1095 1255 1820 2590 1. The fixed costs are dollars 2. The price charged ...
October 8, 2010

math
At a production level of 1400 items, the total cost is $7250 and the marginal cost is $25. Use this information to estimate the costs of producing the following number of items. Your answers should be whole numbers. a) 1401 items . b) 1399 items . c) 1450 items .
October 8, 2010

algebra
this is probablt really simple, but for some reason I can't find out how to do it... solve for b; 2a/bc= 12 (show your work)
October 8, 2010

AP Chemistry
I don't understand that, can you explain it more fully?
October 6, 2010

AP Chemistry
for BF3 and CH4
October 6, 2010

AP Chemistry
How do I calculate orbital hybridization?
October 6, 2010

PHYSIC
An airplane flies north at a speed of 150 km/h relative to the air through which it flies. If there is a tail wind of 50 km/h, what is the plane's velocity relative to the ground?
October 6, 2010

PHYSIC
If a blue car drives 10km/h across the deck of an ocean liner that is traveling at 90km/h, what is the blue car's speed relative to the surface of the water when it drives toward the front of the ocean liner?
October 6, 2010

6th grade social studies
unscramble artiotinm
September 27, 2010

chemistry
urgent help needed!!! what is .0966 rounded to 2 significant digits? and why?
September 22, 2010

science
we have done experiment in school and for homework we must write chemical reactions that have happend during the experiment. the experiment was like this : first we took an unknown substance than we have put some CuO , we mixed that two substances together in test tube. Than ...
September 22, 2010

chemistry
this is over significant digits. -Indicate how many significant figures are in each of the following measurements: e) 4.0 X 10-5 kg i got 1 significant digit, but i'm not sure it if it's right... (& i can't ask my teacher, the situation is complicated)
September 21, 2010

science
thanks a lot -.- i can use search engine too -.-"
September 21, 2010

science
we have done experiment in school and for homework we must write chemical reactions that have happend during the experiment. the experiment was like this : first we took an unknown substance than we have put some CuO , we mixed that two substances together in test tube. Than ...
September 21, 2010

calculus
What is the answer?
September 21, 2010

science
we have done experiment in school and for homework we must write chemical reactions that have happend during the experiment. the experiment was like this : first we took an unknown substance than we have put some CuO , we mixed that two substances together in test tube. Than ...
September 20, 2010

english
what were the two images paine uses in the first 10 lines of the crisis. what kinds of poeple does paine identify thes images? why are these images appropriate
September 16, 2010

Chemistry
Thank you so much for your help.
September 15, 2010

Chemistry
So the water molecules fit in between the alcohol molecules? or do they attach to the structures?
September 15, 2010

Chemistry
So the water molecules fit in between the alcohol molecules? or do they attach to the structures?
September 15, 2010

Chemistry
Water is a small molecule consisting of 3 atoms joined together. (they give the structure of H20. Alcohol is a large molecule consisting of 9 atoms joined together. (they give alcohol structure) using this information make a hypothesis that explains the decreased volumes found...
September 15, 2010

history
It was basically so they could check the power. No one group would have total control. The Congress can't pass laws without going through the president, and the president can't pass laws without passing it through Congress. The same goes for the Judicial branch except ...
September 15, 2010

Chemistry
I thought so too. I was right. :)
September 15, 2010

Chemistry
Assume you have a 50 L barrel full of basketballs and a 50 barrel of tennis balls. If you dump both barrels full of balls into a 100 L barrel, will the barrel be full?
September 15, 2010

..
ooh and why?
September 12, 2010

..
which variable is the dependent variable?
September 12, 2010

10th grade math
how do i solve for y in the equation -5y(6y - 6) - y = -4(y - 5)
September 3, 2010

suffixes
answer the question with a complete sentence that uses a word from the spelling list. add a sufix to the underline word to create the correct word. Does Herb resemble his brother? the word from the spelling list is "rehearsal"
September 2, 2010

algebra
-2 2/3 ÷3 ? 5(-2.4) multiply or divide.then compare using <,>,=
September 1, 2010

algebra 8
oww ...so its < cazz i'm kind of confusee about this two <>
September 1, 2010

algebra 8
mm is it > ??
September 1, 2010

algebra 8
multiply or divide. Then compare using <,>, or = 10(-1/2) ? 20÷4 can some on do it 4 me please
September 1, 2010

science
ohh thanks
September 1, 2010

science
i mean inertia
September 1, 2010

science
what does intertia means?
September 1, 2010

Math
How many seven-digit numbers less than 1,048,000 can be made using the digits 0,1,4,6,7,8, and 9? Make a list of possible ways to represent your seven-digit numbers.
September 1, 2010

algebra 8
A. 1165 B.920 its that the answer?
August 31, 2010

algebra 8
please some one
August 31, 2010

algebra 8
business. A restaurant manager lost $415 in business during the month of january . business picked up in February, and he ended that month with a profit of $1580 A. What was the manager's profit after January and February? B. What if...? The restaurant lost $245 in ...
August 31, 2010

algebra 8th
so whats the answer?
August 31, 2010

algebra 8th
it da answer - 19/40???
August 31, 2010

algebra 8th
i gat 16/40 and 35/40 so do i have to subtract 35-16?? or what???
August 31, 2010

algebra 8th
mm i guess
August 31, 2010

algebra 8th
now i dont understand this one Add Or SSubtract 2/5 - 7/8=?? what do i have to do?
August 31, 2010

algebra 8th
Thanks
August 31, 2010

algebra 8th
-4.7-(-4.7) = 0 ???
August 31, 2010

Spanish
k es lo k tratas d preguntar?
August 31, 2010

science
the Nucleus controls the whole cell. It's known as the "brain".
August 31, 2010

algebra check
because it would be the same answer and the smart one that i asked said that it was right..da!!
August 31, 2010

algebra check
o really o woow thanks
August 31, 2010

algebra check
its it right or wrong???
August 31, 2010

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