Questions Asked on
August 15, 2009

chemistry
A sample of hydrogen gas was collected over water at 36°C and 855 mmHg. The volume of the container was 6.50 L. Calculate the number of moles of H2 collected. (Vapor pressure of water is 44.6 torr at 36°C)

Multiple choice Chemistry help?
1. How is precipitate formed? A: Particles collide, diffuse and then react. B: Particles collide, react and then diffuse. C: Particles diffuse, collide and then react. D: Particles diffuse, react and then collide. My answer is C so correct me if it is

chemistry
In which one of the following processes is ΔH = ΔE? a. 2HI(g) → H2(g) + I2(g) at atmospheric pressure. b. Two moles of ammonia gas are cooled from 325°C to 300°C at 1.2 atm. c. H2O(l) → H2O(g) at 100°C at atmospheric pressure. d. CaCO3(s) →

math
Evaluate tan 7.5

Math
Evaluate exactly cos((45pi/4))

Economics
Sun State Mining Inc., an allequity firm, is considering forming a new division that will increase the firm's assets by 50%. Sun State currently has a required return of 18%, U.S. Treasury bonds yield 7%, and the market risk premium is 5%. If Sun State

Math
I need to write 116 2/3 as a fraction or a mixed number.

Economics
If 10year Tbonds have a yield of 5.2%, 10year corporate bonds yield 7.5%, the maturity risk premium on all 10year bonds is 1.1%, and corporate bonds have a 0.2% liquidity premium versus a zero liquidity premium for Tbonds, what is the default risk

AP English
I have to read the Grapes of Wrath and find 24 quotes to analyze. Some of the quotes have to be biblical allusions (from evennumbered chapters), and the others have to be a rhetoric device. I'm almost done with the book, but I've only found maybe 13

Economics
In the short run, if the Reserve bank decreases interest rates, then consumption and investment_____, planned aggregate expenditure _____ are shortrun equilibrium output_____. A: increase, increases, increases B: increase, increases, decreases C:

Unit of Inquiry
Which are the bangladeshi local organizations working to uphold the rights of women and children? What are their goals, missions, structure, function, real life evidence they are working and the challenges they face while they are upholding human rights of

Math
Jimmy is traveling at a speed of 60 mi/h. What is his speed in feet per second?

Math
If $5,600 is deposited into an account paying 5% interest compounded annually, how much money is in the account agter 3 years?

chemistry.
1.A student is asked to measure the time taken for 4.00g of magnesium carbonate to react completely with 25.0 cm3 of dilute hydrochloric acid. Which pieces of apparatus does the student need? A: Balance, clock, pipette B: Balance, clock, thermometer C:

Biology
Is there a mathematical way of writing Newton's three laws of motion

Physics
Who was Isaac Newton? Write a brief paragraph about his life and work (include a bibliography)

Help with American History
How did Revolutionary ideology challenge the way minorities were treated in America? What changes in this treatment resulted from this challenge, and why did some minorities find their circumstances improved while others did not?

Biology
Could both of the chromosomes of a humane female come from one of the parents? Explain.

biology
how a person's cells could contain three sex chromosmes? XXY.

biology
Mr. Smith have three sons. Mrs. Smith is pregnant and believes she is having another son. Mr. smith disagrees and says that because they have three sons the next child has a greater chance of being a daughter. Who is correct? Explain your answer.

Philosophy
what principles and activities make for an ethical business or organization.

ethical theories
Write a 8 page paper analyzing and evaluating the following types of ethical theories: utilitarianism, Kantian ethics, natural law and virtue ethics theory Use a format that covers A)what is the ethical theory (a brief overview of key points), B) how

reading
what is the setting?

MathematicsinPhysics
If two objects were traveling at the speed of light would they explode on impact or pass through each other?

physics
What is a vibration? What is the relationship between period and frequency?

chemistry
A hydrocarbon sample was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.00 kg of water rose from 20.45°C to 23.65°C. The heat capacity of the calorimeter, excluding the water, is 2.21 kJ/°C. determine the heat released by the

physics
In Bohr's model of the hydrogen atom, the radius of an orbit a. is proportional to n2. b. is smallest for the highest energy state. c. increases when a photon of light is emitted from an excited atom. d. can have any value that is larger than the

Math
LINEAR TRISYSTEM Please explain how to do this problem because I already have the answer as (0,4,2) 5x+yz=6 x+y+z=2 3x+y=4

Math
An open box is to be made from cutting squares of side s from each corner of a piece of cardboard 25" by 30". a.Write an expression for the volume, V, of the box in terms of s. b. Graph V(s) using your graphing calculator. Identify the domain and range of

Math.. check answer please
A restaurant has 11 booths and 12 tables. Write the ratio of booths to tables as a fraction. is the answer 11:12 or 11 to 12 or 11/12?

math
Is the following set of numbers a perfect triple? 7, 24, 25 i don't know what they mean

writing
quick question, how do i structure the following. Compare and contrast ferns and agiosperms. A) talk about their reproductive success B)explain how they are dispersed to different habitats intro; background on ferns. Then some stuff about angiosperms being

Physics
n the figure take q1 = 22uC and q2 = 20u. The force on q_1 points in the  x direction, What is the magnitude of the force on q_1? q3 = 20uC. I don't know where to start, can someone help me? Responses Physics  bobpursley, Thursday, August 13, 2009 at

health care
Idnetify and describe three causes for the increasing costs of health care.What impact does each of these causes have on society?

physics
Consider this set of quantum numbers: n = 3, l = 2, ml = 1, ms = +½ The maximum number of electrons in an atom which can share the above set of quantum numbers is

Math
If 0 < theta < pi and cos theta = 0.5, then what is the value of cos (2 theta)?

Pre Cal.
Express 5sqrt(3)  5i in polar form. A: 10(cos(11pi/6) + i sin(11pi/6)) Express 4(cos(3pi/4) + i sin(3pi/4)) in rectangular form. A: 2sqrt(2) + 2sqrt(2i Write 2x+y=5 in polar form. A: sqrt(5)= r cos (theta27degrees) Are these correct?

english
Choose the simple predicte in the following sentence. The men finished the game in a short time. a.men b.finished c.game d.in I choose b but stuck on d

Math
The value of cos^1((sqrt3/2)) in degree measure is what?

Math
What is the exact value of cot(5pi/6)?

Economics
Which of the following contains only positive statements, rather than normative statements? A. The unemployment rate is high mainly because companies are hiring immigrants to fill positions that would have been offered to natives. Companies should hire

Business Administration
What is an example of an nonprejudicial rhetoric statement?

sociology
how can sociology help you understand your place in contemporary American society? anyone can answer / i need opinions thanks =]

Math
Graph y=(x^29)/(x3) Zoom in on the graph around x=3. Give the viewing window when you first see the empty pixel at x=3 or you notice the graph getting "jagged" around there. I'm using a TI89, and I've been changing the window and zooming in to try and

SCIENCE
HOW DO I START MY REPORT OFF ABOUT THE DIGESTIVE SYSTEM

english
please help me. i've to create a list of power shifts, starting from the opening scene of Act I. It's supposed to follow the exchange of power throughout the play. what details and characters to include? is there and website that shows these power shifts 

gen
I need help putting a paragraph together to answer what the role of ethics and values is within organizations. from this site I found and I know it has good information on it.. I just can put the right words together for this. Please help and hurry

gen
I need help putting a paragraph together to answer what the role of ethics and values is within organizations. from this site I found and I know it has good information on it.. I just can put the right words together for this. Please help and hurry

Math
I have three math problems that I have tried to solve but I do not think they are correct. Can someone please help me! 1. What is the product of 225 and 507? I came up with 225 x 507 = 114075 2. Divide by moving the decimal point. 10.5 ÷ 100 I came up

thermodyn. please check work
What is the sign of heat(Q), Work(W), or Temperature for these following situations. Say if it's +,, or 0. 1)You hit a nail with a hammer: +W, Q=0, T=0 2)You hold a nail over a Bunsen burner: Q=+Q, Temp:constant, W=0 3)You compress the air in a bicycle

AP Englsih
In The Lords of Discipline, Pat Conroy proves that only with the acceptance of individuality,can personal beliefs, desires and priorities define one’s true identity. Is this a strong thesis? How can I improve it?