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September 3, 2015

Posts by tia


Total # Posts: 330

chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid base acid NaOH HC2H3O2
April 9, 2008

chemistry
I'm supposed to find the pH of .1M HC2H3O2. since this is a weak acid, i used the ICE method with the given 1.8x10^-5 ka. and i got a pH of 4.4, but it was wrong....
April 9, 2008

Chemistry
what is the pH of a 0.10 M NH3???
April 8, 2008

Chemistry
When a good indicator has been chosen, the pH at which the solution changes color is very close to the equivalience point of the titration. If this "point" for a particular titration occurs at pH x, a good indicator for the titration would be indicator. X indicator 0...
April 8, 2008

calculus
how would you find the median of a pdf picture it basically is a triangle with points (0,0) (6,.2) (10,0) I found the centroid, or where all the lines from the vertex to the middle of each side intersect and found the intersection of all three lines to be (5.33,.667) would ...
April 8, 2008

calculus
hi I posted this question earlier: what is the median waiting time for f(x)=((1/8)e^(-x/8))? I said the answer was 5.55 is this correct? thank you! and somebody helped me find the mean, but i was wondering if this was the right median. thanks
April 8, 2008

calculus
how would you find the median of a pdf picture it basically is a triangle with points (0,0) (6,.2) (10,0) do i need to find the slopes to find equations for the lines? thanks!
April 7, 2008

calculus
what is the median waiting time for f(x)=((1/8)e^(-x/8))? I said the answer was 5.55 is this correct? thank you!
April 7, 2008

calculus
could some body please check this for me? 1. find the exact coordinates of the centroid of the region bounded by y-x^2, the x axis, the y axis, and the line x=1? I said the answer was ((3/4), (3/10)) 2. Find the exact coordinates of the centroid of the region to the right of ...
April 6, 2008

math riddle ALGEBRA WITH PIZZAZZ
What happened when two fruit companies merged?
April 6, 2008

PHysics-almost complete!
ok, i thought i had an answer, but it wasn't correct...here was my work... (.615)(390)(T-373.15)=(.244)(418.6)(T-293.15)=0 T=349.2571663 -> C=76.1071663 When I used that T in the equation it worked... =(
December 4, 2007

PHysics-almost complete!
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 4, 2007

Physics, almost have it!
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 4, 2007

Physics help please
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 4, 2007

PHYSICS
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 3, 2007

biology
What are invariant amino acids and where are they located? I keep googling it but I cannot find any information just journal articles Thank you for using the Jiskha Homework Help Forum. Since we don't know which links you have tried, here are some thay may help you: 1. ...
March 17, 2007

Financial Analysis - free cash flows
b. Do negative values of free cash flow in way alter or invalidate the notion that a company's fair market value equals the present value of its free cash flows discounted at the company’s weighted average cost of capital? Suppose a company's free cash flows were ...
March 1, 2007

physics PLEASE HELP
I know its hard me explaining: In a problem I have it shows a picture of wave and shows the horizontal displacement from the halfway point of one peak of one wave to the halfway point of the trough right next to it. The choices are A: wavelength/2 B: wavelength C: 2 X ...
February 21, 2007

waves (please help)
I know its hard me explaining: In a problem I have it shows a picture of wave and shows the displacement from peak of one wave to the trough of the next. The choices are A: wavelength/2 B: wavelength C: 2 X amplitude D) period E) period/2 It doesnt show the height for an ...
February 21, 2007

Economics
One of the important changes in the world economy over the past three decades has been the rapid increase in capital investment in the countries of the Pacific Basin (notably Japan and Korea). What are the implications of this investment for the commodity patterns of trade of ...
February 18, 2007

Financial Analysis
Reposting generically: How does a huge investment in cash affect a company's return on equity and its sustainable growth rate? As shareholder, would you endorse a large investment in cash? As a senior executive, how would you defend the investment?
February 17, 2007

Financial Analysis
In general terms, how does Oracle’s huge investment in cash affect its return in return on equity and its sustainable growth rate? As an Oracle shareholder, would you endorse Oracle’s investment in cash? As an Oracle senior executive, how would you defend the policy?
February 17, 2007

math
what is the squar root of 256 16
January 18, 2007

"My Antonia"
A new critc reading "My Antonia" would find many components worth consideration, like Cather's lush descriptions of the prarie and vivid portrayls of living with only the barest essential. Wite a formal paragraph to this question- Analyze the importance of the ...
January 10, 2007

English"My Antonia"
I need some help writing an essay on this topic- Discuss how realism affects the way a reader might approach the different issues in "My Antonia" such as suicide, the representation of the harshness of the prarie, or Jim's views of life. I'm not sure what to ...
January 8, 2007

Biology
What is an analogies for Mitochondria,Chloroplast, Cytoskeleton and Ribosome. http://www.google.com/search?hl=en&lr=&as_qdr=all&q=+%22Mitochondria+are+like%22&btnG=Search http://www.google.com/search?as_q=&hl=en&num=10&btnG=Google+Search&as_epq=Chloroplast+is+like&as_oq=&as_eq...
December 30, 2006

science
im stuck im 11 i have a twin she is more cleaver she told me that Their is a phisical change the phisical change is the wax starts to melt.The chemical change is the light and heat energy is produced .thier is a diffeence beetween a phisical and a chemical the difference is ...
October 20, 2006

math
I need a anserw to 35+85+443 563 41 563 umm like adding them?or average or what??
October 3, 2006

insclee
sleec
September 28, 2006

Punctuating Sentences check please
All though they say that eskemos are the natives of alaska; there wrong, the true natives of alaska are the wolves.
August 8, 2006

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