Thursday
July 24, 2014

Posts by anon


Total # Posts: 1,339

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 t...

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

chemistry
the answer you did last night was wrong. sorry DrBOb :{

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

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

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.

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

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

Literary Analysis and Composition
LOL K12 in the house baby

chemistry
i just submitted it and its nf=2 and balmer

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

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

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)

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...

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?

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

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)]

chemistry
Why is it more soluble in water?

chemistry
its 4

Chemistry
It's N2O4. I'm doing the same quiz right now lol.

Physics
e no

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...

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

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

CHEM
Explain in glorious detail the difference between H2O and H2S

CHEM
Explain solvation and/or hydration

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

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

CHEM
explain 1) Ion-Ion 2) Ion-Dipole 3) Dipole-Dipole 4) Dipole-Induced dipole 5) Induced dipole-Induced dipole

CHEM
Distinguish between polar bonds and polar molecules.

CHEM
why would ca+ and co+ form soluble salts?

chemistry
what is the difference between acid base reaction and oxidation reaction

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

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

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. incapa...

mathematics
O.O CHEAT!!!!

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 a...

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.

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

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

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...

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 .

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

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

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?

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?

Chemistry
check your book

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

english
What's a thesis statement

I just need your IMAGINATION
What's a good creative title for overfishing?

Chemistry
ask your teacher.

ENGLISH GRAMMAR~!~!~!~!~
when do you use affect and when do you use effect?

chem
thanks that worked

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 ...

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

history
what exactly is the third world counter offfensive? is it the war for the persian gulf?

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." ?

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...

biology
You find a male tribble with plaid fur. When you cross this male with a purebred solid blue female, all the offspring are solid blue. A cross between two of these F1 tribbles produces an F2 generation that is 3/4 solid blue and 1/4 plaid. All of the blue F2 tribbles are male. ...

calculus
you do it separately to find each intercept

calculus
when y-int, x=0 and x-int, y=0

parts of speech
Thousands of years ago, fish were caught in nets and traps the word (in) is it a preposition in this sentence.

PARTS OF SPEECH
Thousands of years ago, fish were caught in nets and traps. Is the word (in) a preposition?

Personification
How about -- do it yourself. it's your homeowork.

algebra 1
A Robber Ducky?

Math
250?

Physics
Try to use P2-P1 = ρ/2(v1^2-v2^2) Derived from P1 + 1/2ρv1^2 = P2 + 1/2ρv2^2 Then A1V1 = A2V2 is from continuity and can be expressed V1 = A2V2/A1 You get the equation P2 - P1 = ρ/2((A2V2/A1)^2 - V2^2) via substitution And then simplify to 2(P2-P1)/ρ =...

psy
I just wanted to follow-up to this question and answer. The textbook for ths class is still the same, and is one of the worst textbooks I have ever read. The person who wrote it seems to have written it just to see how much of a prig he could sound like. It's very difficul...

american government
a police officer has arrested a suspect and produced evidence of wrongdoing. list three questions you would ask the officer to determine whether the freedom and security of the suspect have been violated

american government
how can a governors message power affect legislation in a state?

american goverment
great answer damon thank alot

american goverment
thamk you

social studies
What does income polarization mean?

12th grade
They both allow internal fertilization to occur.

precal
Create a rational function that has a polynomial function that is similar. The rational function must have a vertical asymptote. thanks for any help.

Social Studies
here you go buddy. They were to seize stores of colonial gunpowder and also to bag the "rebel" leaders Sam Adams and Jhon Hancock.

re msg for writeacher
thanks for your help now you have broken it down like that it makes a bit more sense.

year 8 re
i need to write an essay about christians. the questions i have got are:- 1) Christians argue that.... 2) a futher point christians make is that... 3) however there is are also strong arguments against this point of view . people who do not believe in the existence of Jesus cl...

nonfiction
kool, 100%! thanx kourtney!

music
i need to find 10 musical things about buddy holly and how he died. thanks!

PLEASE HELP ME WITH MY MATH H.W.
12 friends, 70cents each. 5 dimes and 4 nickles. 9 coins total

Ethnic Diversity
Two years later... I'm on the same damn checkpoint. So much for up to date learning.

history
I can't find a thing online and there is no reading for this week....oh well...

english
We have to state why the following sentences are not gramatical: a) Robin forced the sheriff go (I know there should be a "to" before the go, but I dont get the "rule" of why its gramatically incorrect) f) He came a large sum of money g) Did in a corner lit...

history
I came to this page by means of search engine.. thanks for the history lesson..

speech
thank you :)

speech
help...i can't think what to do a speech on. It is for tomorrow. I was thinking about doing it on essays - can anyone help?

Ms Sue
Thankyou so much for all the help you gave me on the broughton airbus factory. i would have been lost without your help. thanks again !

geography
a BIG thankyou to Ms Sue for all your help on broughton airbus factory. you gave me alot of help and i appreciate . thankyou!

geography
where are all the airbus factories ? thankyou for your help!

GEOGRAPHY
why is the broughton airbus located in broughton? Is it because it is close to the motorways [i don`t know which motorways] close to the River Dee and it has enough land if it needs to be extended? the names of motorways will be useful thanks! SORRY to be a pain i`m sooooo stu...

geography
what is the job of the beluga whale airbus? what happens when the parts arrive in toulouse? describe the site of the broughton airbus factory? thanks!

Electrochemistry
WEBASSIGN.... too bad no one answered this question...

dt
is a portable drill the same as a cordless drill? i`m confussed i don`t know if they are the same or different.

dt
definition for portable drill.

DT WOODWORK
thankyou for helping finding the sites about the different drills it was big help

DT WOODWORK
what is the definition of 1/ portable drill 2/ pillar drill 3/countersink 4/pilot hole thanks for your help

YEAR 7 GEOGRAPHY
Thankyou Ms.Sue for finding the site for the Broughton airbus pictures. They were very helpful .

YEAR 7 GEOGRAPHY
i forgot to mention i need some photos of the airbus factory in Broughton Chester. i can`t seem to find any. thankyou

year 7 geography
Please could someone help me i need to write an essay about airbuses.These are the questions i need to write my essay about. thanks for taking the time to help 1/ how does the airbus uk fit into the airbus factory? 2/ describe how the wings are transported and how they get to ...

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