Saturday

July 4, 2015

July 4, 2015

Total # Posts: 329

**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*