Sunday
December 21, 2014

Posts by ANON


Total # Posts: 1,482

Earth Science
what is the dewpoint temperature of a kilogram of air when a psychrometer measures an 8 degree Celsius dry-bulb temperature and a 6 degree Celsius wet-bulb reading?
November 11, 2010

C++
Write a statement that passes the value 4 to the function below and assign it's return value to the variable result. Thank You. int cube(int num) { return num*num*num; }
November 11, 2010

Statistics
My apologies, the figure got messed up Paper shredders --------------- 75 115 118 287 250 300 50 Calculators -------------- 110 140 165 90 230 97 269
November 10, 2010

Statistics
The figures below represent the prices (in dollars) for both paper shredders and calculators. At the 0.10 level of significance, can it be concluded that the variance in price differs between the two types of machines? Paper shredders | Calculators...
November 10, 2010

Earth Science
What are the effects radiation has on the heating of land and water? Thank You.
November 4, 2010

Earth Science
What are the primary heat absorbing gases in the atmosphere? What wavelength of radiation do they absorb?
November 4, 2010

chemistry
what is the reaction equation when maleic anhydride is combines with granular zinc and HCl propose structures for the products you would obtain by treating fumaric acid, cinnamic acid, and butynedioic acid with zinc and HCl. write balanced equations for the reactions.
October 30, 2010

Earth Science
What are the minimum and maximum durations of daylight at a latitude of 39 degrees north? Thanks.
October 30, 2010

Earth Science
What causes the intensity and duration of solar radiation received at any place to vary throughout the year?
October 30, 2010

chemistry
AgI (aq) + NH3 (aq) -->
October 28, 2010

chemistry
how can AgCl(s) be dissolved completely? write an equation for the reaction
October 25, 2010

Statistics
find the 90% confidence interval for the variance and standard deviation of a sample of 16 and a standard deviation of 2.1 Assume the variable is normally distributed.
October 24, 2010

Statistics
Thank you so much!
October 24, 2010

Statistics
For a sample group of 22, the mean is 86 with a standard deviation of 5. What is the 90% confidence interval of the true mean of the sample? Can you please explain the steps you used to get the answer. Thanks.
October 24, 2010

chemistry
ok thank you:)
October 13, 2010

chemistry another add on
c)what is the pH after the addition of 1.0 mL of 0.10 M NaOH to 15 mL of the original solutiom.... i dont really need a im pretty sure my answer is right but should i really be getting the same answer for b and c?
October 13, 2010

chemistry
b) what is the pH after the addition of 1.0 mL of 0.10 M HCL to 15.00 mL of the solution?
October 13, 2010

chemistry
what is the pH of a solution prepared by adding 20.00 mL 0f a 0.10 M acetic acid and 10.00 mL of 0.10 M sodium acetate
October 13, 2010

chemistry
net ionic equations of nitric acid with CO3 2- and with PO4 3-.
October 13, 2010

chemistry
a titration is done with with 25.00 mL of a .1500 M HBrO solution is titrated with .1025 M NaOH. Ka for HBrO= 2.0 x10^-9. The pH of HBrO before the titration begins is approx. closest to which of the following a. 0.82 b. 4.76 c. 8.70 d 10.60 e. 13.01 the answer is b 4.76 but how?
October 11, 2010

chemistry
the Ksp for CaF2 is 3.9*10-11. assuming that calcium flouride dissociates completely upon dissolving and that there are no other important equilibria affecting the solubility, calculate the solubility in pure water, of calcium floride in m/L and in g/L
October 10, 2010

physics
^ That is just an equation, it does not even answer the question.. I don't mean to be rude but even if you know the equation you can't answer the question if you do not know how to apply it.
September 27, 2010

physics (SAT 2)
just by putting cos(12) in calculator
September 27, 2010

algebra**** 1
x= 51428571.43 square miles
September 26, 2010

PHyiscs
A HELICOPTER hovering above a forest fire dumps a large bucket of water. How far does the water fall in the first 3.0 seconds t=3.0s
September 24, 2010

chemistry
In the movie "The Raiders of the Lost Arc", Indiana Jones and his guide play catch with a gold idol. The idol had a volume of about 1.30 L. In order to determine whether they could really play catch with the idol, calculate the weight (in pounds) of the idol. The ...
September 13, 2010

physics
Where to get 44.1 for Velocity as in the Centripetal Acceleration?
September 9, 2010

Math(word problems)
4.Tracie invested $x at 7% and $y at 6%. Write algebraic expressions for: a.the total amount of money invested b.the interest earned at 7% in one year c.the interest earned at 6% in one year d.the total interest earned in one year
July 28, 2010

math
1.)Explain why ironing boards always remain parallel to the floor and can be adjusted for people of various heights. You may want to consider the following: a.)The legs of the board are built so that AD = BD and DE = DF, and ADF and BDE are straight lines as shown. b.)Which ...
July 21, 2010

Chemistry
what's #10
July 12, 2010

physics
A cylindrical space colony 8 km in radius and 60 km long has been proposed as living quarters for future space explorers. Such a habitat would have cities, land and lakes on the inside surface and air and clouds in the center. All this would be held in place by the rotation of...
June 25, 2010

programmning code
Is this code right? Declare Integer days, counter = 1 Declare Real penny = 1, salary, total = 0 Display "Enter a number of days." Input days Display "Days",TAB,"Salary While counter <= days Set salary = penny/100 Display counter, TAB, salary Set ...
May 21, 2010

Chemistry
The element niobium has bcc packing with a body-centered cubic unit cell. The volume of the unit cell is 3.59 x 10-26 L. Calculate the density (g/cm3) of the element
May 12, 2010

5th grade
Hello there Read the problem as it says. Variable "n" raised to the 10th power is equal to 27.
May 10, 2010

Stats
What is the probability that a simple random sample of 56 special orders will provide an estimate of the population proportion of special orders specifying the color black that is within plus or minus .05 of the actual population proportion,assuming p = .36? In other words, ...
May 4, 2010

physics
I think you mean third second
April 18, 2010

language
lol are you posting under several diff names for the same kinda homework?
April 15, 2010

biology
Replication of the E. coli chromosome takes 40 to 45 minutes, but the organism has a generation time of 26 minutes. How does the cell have time to make complete chromosomes for each daughter cell? For each granddaughter cell? my reponse was that the cells don't fully ...
March 29, 2010

Chemistry
bump
March 14, 2010

his 135
This is one of the more helpful posts I found after finding this site on google, and it (like most others) is almost useless in its content related to the 1960's subculture.. and it is also filled with rude people telling its customers to search elsewhere.. I too will take...
March 11, 2010

chemistry
NS6 P2S6 C? Phosphorus tetrabromide
March 11, 2010

Global Studies
actually if you state the documents out like that, you LOSE points and wont be able to go in the expanded core. just say "so and so stated this" and then in parentheses, say the document number. believe me ive been doing this without knowing, and my ap teacher just ...
March 6, 2010

Chemistry *URGENT*
URGENT help! 3. A rock sample was dated using potassium-40, Neasyrenebt ubducated tgat 1/8 of the original parent isotope is left in the rock sample. How old is the rock? 5. When a sample of lava solidfied, it contained 28g of uranium-238. It that lava sample was later found ...
March 5, 2010

Social Studies
How does a town's economic base determine how the community takes shape? Please help me.
March 4, 2010

chemistry
the answer you did last night was wrong. sorry DrBOb :{
February 21, 2010

chemistry
your all idiots!!! both .09505 and 3.3 are wrong were doing it in a computer program and we reworked the problem!!!
February 20, 2010

biology
oh come on, this is the easiest thing i have ever heard. google much?
February 15, 2010

Chemistry
What volume ( L ) of the solute HCO2H should be combined with 5480 mL of the solvent H2O to make a solution that is 0.443 m HCO2H.
February 2, 2010

Chemistry
Calculate the mass ( kg ) of the solute C4H8O and the volume ( mL ) of the solvent C6H6 that should be combined to generate 6450 g of a solution that is 2.07 m C4H8O. Density (kg/l) C4H8O 0.8892 C6H6 0.8786
February 1, 2010

Physics
Im doing this question right now and I cant understand it! how did you get that value?!
January 22, 2010

Literary Analysis and Composition
LOL K12 in the house baby
January 21, 2010

chemistry
i just submitted it and its nf=2 and balmer
January 15, 2010

UCI chemistry
Its Balmer nf = 2. I just tried it. Dont listen to nf = 1 or 3.
January 15, 2010

Social Studies
Compare and contrast Post-classical feudal systems in Japan and Western Europe, in terms of social classes, gender roles, and rules/laws.
January 3, 2010

physics
For part B: angular momentum = m*r*sqrt(2gh), where r=1.6 and h=2 5*1.6*sqrt(2*9.8*2)
December 15, 2009

Chemistry
So I have that 1.51 V - 1.065 V = .445 V = E and that ΔG = - 10 mol * 96485 J / mol*V * .445 V ΔG = -429358 J so then plugging in: K = e^(-(-429358)/(8.314 J/mol*K * 298 K)) K = 1.82 * 10^75 The 'correct' answer appears to be 1.5 * 10^75 , but that's not...
December 2, 2009

Math
a store owner buys supplies from a vendor for $8,450. the terms of sale are 2/10, n/30. what will the net amount due be if the owner pays the bill by the 10th day after he receives the supplies?
November 23, 2009

Algebra
(x-2)(x-2)= X^2-4x+4 = 1 X^2-4x+3=0 Use quadratic equation and you get X=3,X=1 ALternatively use could take the square of both sides and get x-2=+/- 1 so x=2 +/- 1 so X=3,1
November 22, 2009

Physics
Very close. Remember to change mm to meters. Greatly effects answer. Va/Vb = sqrt[(Tension1/Tension2)*(Diameter2^2/Diameter1^2)] Va/Vb = sqrt[(420/840)*((5.9E-4)^2/(1.3E-3)^2)]
November 20, 2009

chemistry
Why is it more soluble in water?
November 17, 2009

chemistry
its 4
November 8, 2009

Chemistry
It's N2O4. I'm doing the same quiz right now lol.
October 25, 2009

Physics
e no
October 4, 2009

CHEM
Factors which effect reaction rates. 1) Concentration 2) Temperature 3) Presence of a Catalyst 4) Surface area 5) Orientation You store food in a fridge to prevent spoilage. Which factor are you applying to slow the rate of reaction? Which one of the following burns easily and...
September 21, 2009

CHEM
Explain how micelles and more complex solutions work. Consider all Solute-solute, Solvent-solute and Solvent-solvent interactions in such a system.
September 21, 2009

CHEM
In nonpolar molecules what part does Molecular Weight play in the strength on their intermolecular forces?
September 21, 2009

CHEM
Explain in glorious detail the difference between H2O and H2S
September 21, 2009

CHEM
Explain solvation and/or hydration
September 21, 2009

CHEM
Explain why H2O and NH3 are both dipole-dipole interactions yet H2O boils at a significantly higher temperature.
September 21, 2009

CHEM
Explain why H2O and NH3 are both dipole-dipole interactions yet H2O boils at a significantly higher temperature.
September 21, 2009

CHEM
explain 1) Ion-Ion 2) Ion-Dipole 3) Dipole-Dipole 4) Dipole-Induced dipole 5) Induced dipole-Induced dipole
September 21, 2009

CHEM
Distinguish between polar bonds and polar molecules.
September 21, 2009

CHEM
why would ca+ and co+ form soluble salts?
September 20, 2009

chemistry
what is the difference between acid base reaction and oxidation reaction
September 15, 2009

chemistry
If you had used a different mass of magneisium metal would you expect the empirical formula of the compiund to be the same? explain
September 13, 2009

Organic Chemistry
What orbitals are used to form the C–B bonds in B(CH3)3?
September 7, 2009

General-Law
1. The rationale for punishment and correction comes from A. the social contract theory. B. Rawls’s theory. C. utilitarianism. D. egoism. 2. The two major justifications for treatment and punishment are A. ...
August 14, 2009

mathematics
O.O CHEAT!!!!
July 15, 2009

Science
Fats offer a vast source of energy. (32kj as opposed to carbohydrates lowly 17kj for molecule) Fats can also be converted into adipose tissue which insulates and protects the body. Protein can be converted to glucose in deamination. And can also be used in growth replacement ...
June 27, 2009

Biology
Lipaze? Thats the enzyme used to break down protein. Well Penicillin prevents the synthesis of bacterial cell walls and other antibiotics punch holes in cell walls. Do you mean cell wall or cell membrane? Cell walls are found around plants and bacteria. ie. not human cells.
June 19, 2009

biology
Ionic bond is the electrostatic attraction between oppositely charged cations and anions. Covalent bonding is the sharing of electrons between 2 non metals.
June 13, 2009

college/human biology
Ok the guy above is a retard and hasnt answered the question. Cell: Epithelial Cell (to be specific lets say a Glandular Epithelial Cell) Tissue: Epithelial Tissue Organ: Skin System: Immune system
June 5, 2009

math
Ray Cupple bought a basic car costing $10,150.00, with options costing $738.00. There is a 6% sales tax in his state and a combined $50.00 license and registration fee. What was Ray's total cost? A. $10,938.00 B. $11,541.28 C. $11,547.00 D. $11,591.28 which one is it c or...
June 4, 2009

math
Jane Marko buys a car for $11,400.00. In three years, the car depreciates 48% in value. How much is the car worth in three years? A. $3,800.00 B. $4,788.00 C. $5,472.00 D. $5,928.00 my work 11400.00*0.48=5472.00 am i right .
June 4, 2009

math
A pair of pants with a marked price of $35.00 has a discount of 20%. How much is the discount? A. $7.00 B. $17.50 C. $28.00 D. $42.00
May 28, 2009

chemistry
f+2 means f+2 and you should've said what not that it's a variable plus a number
April 22, 2009

chemistry- stoichiometry problems
C2H4+3 O2->2 co2+2 H2O If you start wit 45 grams of C2H4 how many grams of carbon dioxide will be produced?
April 22, 2009

chemistry- stoichiometry problems
Mg+2 NaF-> MgF2+2 Na If you start with 5.5 grams of lithium chloride, how many grams of calcium chloride will be produced?
April 22, 2009

Chemistry
check your book
April 22, 2009

Chemistry
basically the particles in both the liquid and vapor would keep moving around and spreading out evenly until equillibrium is reached. that's basically it
April 22, 2009

english
What's a thesis statement
April 7, 2009

I just need your IMAGINATION
What's a good creative title for overfishing?
April 7, 2009

Chemistry
ask your teacher.
April 7, 2009

ENGLISH GRAMMAR~!~!~!~!~
when do you use affect and when do you use effect?
April 7, 2009

chem
thanks that worked
March 26, 2009

chem
When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 1.0 M HCl is required to react completely with 4.00 g of magnesium i did 4.00g x (mol/24.31 g Mg) x (2 mol HCl/1 mol Mg) x (L/!.0 mol HCl) = .329 L why ...
March 26, 2009

Financial Accounting
What items appear on the merchandising company statements that don’t appear on the service company statements? Why is there a difference?
March 24, 2009

history
what exactly is the third world counter offfensive? is it the war for the persian gulf?
March 4, 2009

chemistry
Yeah I know...sorry, but that's all the information I was given Thank you for your answer. But what exactly do you mean by "then make to the final mark of the flask with water." ?
February 21, 2009

chemistry
This is confusing. I am supposed to explain how to prepare a solution using the proper lab equipment (both from dry solid and a stock solution) Help would greatly be appreciated...
February 21, 2009

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