# Questions Asked onFebruary 17, 2007

1. ## Chemistry

What is the net ionic equation when H2SO4 is neutralized by NaOH in aqueous solution? Write the molecular equation. H2SO4 + 2NaOH ==> Na2SO4 + 2H2O Convert to ions. 2H^+ + SO4^= + 2Na^+ + 2 OH^- ==> 2Na^+ + SO4^= + 2H2O Now cancel those ions that appear on

2. ## Chemistry

How many ml of a 0.827 Molar KOH solution is required for neutralization in a titration of 35.00 ml of 0.737 Molar H2SO4? Write the equation. 2KOH + H2SO4 ==> 2H2O + K2SO4 mols H2SO4 = M x L = 0.03500 L x 0.737 M = ?? mols KOH = 2 x mols H2SO4 from the

3. ## science

Which provides more cooling for a Styrofoam cooler, one with 10lb of ice at 0C or one with 10lb of ice water at 0C? Explain your reasoning. 10# ice requires heat to melt the ice + heat to heat the water after it melts. 10# ice water requires heat to heat

4. ## integration by parts

s- integral s ln (2x+1)dx ? = ln(2x+1)x - s x d( ln (2x+1)) = ln(2x+1)x- s x [(2x+1)'/ (2x+1)] dx = ln(2x+1)x- s x [(2)/ (2x+1)] ?... then i'm confused... "ln(2x+1)x- s x [(2)/ (2x+1)] ?... then i'm confused..." x [(2)/ (2x+1)] = 2x/(2x+1) =

5. ## Physics waves

Two sinusoidal waves travel in the same direction and have the same frequency. Thier amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1+Y2 and occurs if they are 180 degrees out of phase b) [Y1-Y2] and occurs if they

6. ## Chemistry

How do you find Absolute error and how do you find relative error? Absolute error is the difference between the experimental value and the actual value. Relative error, usually expressed as a percent, is the error relative to the correct value. For

Win 1010” AM radio broadcasts at 1010KHz. Determine the wavelength of its signal, knowing that all radio waves travel at 3.00 X 10^8 m/s. f=1010kHz v=3.00 X10^8 m/s v=F X lambda lambda= 2.9 X 10^5 For a particular type of wave in a particular medium why

8. ## Financial Analysis

The president, vice president, and sales manager of Moorer Corporation were discussing the company's present credit policy.

9. ## physics

would adding a proton or taking a proton away from gold nucleus mean it is more finacially valuable i think it would make it less valuable am i right or not, because you are reducing its state Helen Maybe but I think you are using the wrong criterion. Gold

10. ## Physica

A 21.0-kg satellite has a circular orbit with a period of 2.37 h and a radius of 8.50×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.10 m/s2, what is the radius of the planet? I

11. ## 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?

12. ## chemisrty

if i am trying to find the diameter of an oil molecule and express my answer in scientific notation. the info is drop of oil 0.05 cm3 from a dropper spreads out to 40 cm2 is it vol = l x w x h 0.05cm3 = 20 x 20 xh 0.05 cm3 = 40cm2 after this im stuck as i

13. ## physics (check my answers)

When the nuclear fuel in the sun is gone, the sun will collapse to a a. black hole b. white dwarf c. supernova d. neutron star My answer: I think its a black hole. If the mass of the Earth were suddenly doubled while the radius was unchanged, your weight

14. ## chemisrty

which element results if 2 protons and 2 neutrons are ejected from a radium nucleus with atomic num 88 and mass num 226 how do i go about this please can you help If you can add you can do these. 88Ra226 ==>2X4 + zzYww. Now make the numbers add. Protons

15. ## integration by part

s- integral s (p^5) lnp dp ? = (lnp)[(p^6)/(6)] - s (i'm confused here) Let ln p = u and p^5 dv = dv du = 1/p and v = p^6/6 The integral can be written uv - v du = (ln p*p^6)/6 - S (p^5/6) = (1/6)ln p*p^6 - ??? Complete the last step

16. ## Presidential Trivia

Help - I can't find this answer. Which US President had the most siblings? Searched around google, to no avail. Anyone else have more luck than I? Thanks! By Googling president most siblings, I found the first site. To check with other sources, I looked

17. ## UnKnown

i need to make a steamboat and a cotton gin.. i can't find how to http://www.ehow.com/ http://www.google.com/search?q=build+a+steamboat&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

18. ## DR BOB - Chemistry Question 4 a - d

a. State the atomic number of ununhexium and give the full symbol for the isotope ununhexium. b. Give the period and the group of the periodic table in which you would expect to find ununhexium, explaining how you arrived at your conclusions. Further name

19. ## 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

20. ## eth 125

Write a 1,050 to 1,400 word researcch paper identifying the linguistic, political, social, economic, religious, and familial cinventions and/or statuses of four Hispanic groups living in the United States. Your paper should cover Mexican Americans, Puerto

21. ## history

She could not wite her name, but, she patented a hand operating machine for kneeding and rolling dough. Who was she? http://inventors.about.com/library/inventors/bljosephlee.htm http://www.ncat.edu/~childres/doughneader.html What year did the first

22. ## supply and demand

I'm looking for help on the third part of this question. I've included preceding questions/answers to show where I'm at. I don't know what to do next. Suppose that a market is described by the following supply and demand equations:

23. ## Math

I need help with this problem. The electricity meter on Donna's house read 71,236.4 kwh at the beginning of March and 73,196.2 kwh at the end of March. She pays 7.4% per kwh. What is the amount of her electricity bill for March? Round to the nearest cent.

asked by Merisa Ann--Desperate for help!!
24. ## English

how does the importance of traveling for the development of Descartes's method compare to Swift's use of travels as a literary device in his novel?

25. ## integration by parts

s- integral s ln (2x+1)dx ? = ln(2x+1)x - s x d( ln (2x+1)) = ln(2x+1)x- s x [(2x+1)'/ (2x+1)] dx = ln(2x+1)x- s x [(2)/ (2x+1)] dx = ln(2x+1)x- s (2x/2x+1) dx = ln(2x+1)x- s [(2x+1-1)/(2x+1)] ... i'm confused about why there is a minus 1 after the

26. ## Physics

Explain what happens to the charge carriers in a semiconductor light dependant resistor when it is illuminated. Suggest why shining light onto an LED might be expected to generate a small voltage between its terminals. Thx A semiconducting light-dependent

27. ## solving exponential equations graphically

e^(3-2x) = 4 How do I solve this graphically? Thanks. Make a graph of e^(3 - 2x) vs x for various values of x from 0 to 2. The answer will be in that interval. Where the graph crosses f(x) = y = 4, read off the value of x. That will be the answer. When x =

28. ## bock 7 s103

is there anybody out there who have looked at tma 06 yet if you have could we pick each others brains lol thanks I looked up tma 06 on google and found many site regarding religion which certainly is not my field. Please clarify your question, if you still

29. ## Math

A block is a consecutive sequence of the same digit that is not part of a longer such sequence. a.) Determine the number of sequences of 0's and 1's of length 10 in which every block of 1's has an even length. b.) Determine the number of sequences of 0's

30. ## history

How many Blacks settled in America ans where did they settle? It looks as if what you need to do is learn how to conduct thorough and effective searches for yourself. That's what research is, and I'm sure that's what your teacher expects you to do --

31. ## history

Who was the first Black woman to graduate from college? Search at http://www.google.com Enter first black woman graduate college (leaving the ultra-common words out). =)