Science & Mathematics - 31 October 2006

25cm3 of a solution of 0.1M NaOH reacts with 50 cm3 of a solution of hydrochloric acid. What is the molarity of the acid?

2006-10-31 08:54:19 · 4 answers · asked by Joyce 4 in Chemistry

2006-10-31 08:52:54 · 6 answers · asked by emily h 1 in Chemistry

I am doing a project on Alaska weather.Can ANYONE tell me something they know about Alaska weather? I can't find anything about it on any websites, so anything on Alaska weather such as average temperatures,elevations,info. on the seasons , ANYTHING to do with the weather on Alaska would be greatly appreciated!

2006-10-31 08:51:41 · 6 answers · asked by Anonymous in Weather

2006-10-31 08:49:54 · 13 answers · asked by rafael 1 in Physics

2006-10-31 08:49:52 · 3 answers · asked by Sam R 1 in Geography

25cm3 of sodium hydroxide react with 17cm3 of 0.1M of H2SO4.
Calculate the molarity of the sodium hydroxide.
The balanced equation is 2NaOH + H2SO4 ---->Na2SO4 + 2H2O.
so the ratio of the ............. NAOH to H2SO4 is 2:1 :D

2006-10-31 08:49:08 · 3 answers · asked by Joyce 4 in Chemistry

2006-10-31 08:48:51 · 13 answers · asked by i_heart_jake_ryan118 1 in Mathematics

same to you

2006-10-31 08:48:06 · 16 answers · asked by shan d 1 in Mathematics

I know it is sugar and chocolate, so i guess i am asking what the formula is for both of those.

2006-10-31 08:47:43 · 2 answers · asked by tenteus2000 1 in Chemistry

Bought fifty dragon seed monsoon season didn't see flying squirrels.

2006-10-31 08:47:20 · 2 answers · asked by nuejerz 2 in Zoology

im doing my science homework and really need an image of the collision theory, any website with images would be a help 2!!
thankyou

2006-10-31 08:44:59 · 6 answers · asked by hannah_detain 2 in Chemistry

To put it more clearly here are the conditions and a restated question:

- there are 2 electrons and 1 proton.
- the proton is in between the electrons
- the electrons are equal distance to the proton
- the electron-electron repulsion doesn't matter to me

Diagram:
e- p+ e-

Question: Does the +1 charge of the proton "divide" equally and each electron gets half the force, or does each electron "feel" the entire +1 charge of the proton?

2006-10-31 08:44:09 · 5 answers · asked by Chris G 2 in Physics

I have an SPSS database with about 2000 students who took English Comp this past academic year. I also have their SAT scores. The correlation between the two is .381, which is significant at the .01 level. But how do use that to predict what a student with an SAT of X will get in English Comp? We are trying to determine if our SAT cut-score for entrance into English is too high or too low.

2006-10-31 08:42:49 · 2 answers · asked by NONE N 1 in Mathematics

P = 664 torr
V = 959 mL
T = 30.5 oC


Enter a numeric answer only.

2006-10-31 08:41:31 · 1 answers · asked by simonkf2002 1 in Chemistry

4 simple questions....but can you get them?
1: A school raised $100 for the Red Cross. The eighth grade class raised $38.48. Express, to the nearest tenth, the percent raised by the eighth grade class.
27.5%
30%
38.5%
42%


2: A baseball player got 67 hits out of 210 times at bat. Express his batting success as a decimal correct to the nearest thousandth.
0.3340000000000000190958360235...
0.3190000000000000057731597280...
0.2959999999999999853450560749...
0.2869999999999999773514502976...


3: A company paid the government a surplus tax of 3/4% on certain parts of its sales. If the tax was $15,000, how much were the sales represented by this payment?
$20,000
$17,500
$2,000,000
$22,500


4: A newspaper said, "The profits in a certain investment will drop 1.83% below last year." What drop is this on an investment of $15,000,000?
$8,197,261
$1,560,700
$640,440
$274,500

2006-10-31 08:41:29 · 6 answers · asked by Anonymous in Mathematics

2006-10-31 08:40:38 · 12 answers · asked by can-d-cane 3 in Geography

2006-10-31 08:39:12 · 8 answers · asked by Anonymous in Geography

What is the balanced chemical equation for the reaction that occurs when HCl is added to Zn metal? And what is the chem equation when a lighted match comes in contact with the same reaction?

2006-10-31 08:39:05 · 2 answers · asked by Anonymous in Chemistry

by entering your date, and time, if known of your birth??

2006-10-31 08:38:00 · 9 answers · asked by Anonymous in Mathematics

Both a and b are positive numbers. 10/7 * a = 7/10 * b. What is the ratio of a to b.

2006-10-31 08:37:59 · 6 answers · asked by vinskid2005 2 in Mathematics

2006-10-31 08:36:00 · 10 answers · asked by lilacbee 1 in Geography

2006-10-31 08:34:06 · 16 answers · asked by Anonymous in Zoology

2006-10-31 08:33:51 · 4 answers · asked by uno 1 in Chemistry

What is the missing number in the following equations?

a.) 4NH^3 + 30^2 = 2n^2 + [ ?] H^2O
B.) 4NH^3 + 50^2 = 4NO + [ ?] H^2O
C.) 4FeS^2 + 110^2 = 2Fe^2O^3 + [?] SO^2
D.) 2HNO^3 + 3H^2S = 2NO + [?] H^2 = 3S

THANKS!

2006-10-31 08:30:41 · 5 answers · asked by Michelles W 1 in Chemistry

2006-10-31 08:29:41 · 16 answers · asked by Anonymous in Zoology

2006-10-31 08:28:37 · 1 answers · asked by Anonymous in Botany

2006-10-31 08:27:07 · 22 answers · asked by irishjon1 1 in Weather

2006-10-31 08:26:41 · 9 answers · asked by melycook 1 in Chemistry

What temperature does gold jewelry melt and do i need a kiln? How do you separate gold alloy from gold?

2006-10-31 08:25:09 · 2 answers · asked by carol f 1 in Earth Sciences & Geology

What is the balanced equation for when Aluminum reacts with sulfuric acid to give aluminum sulfate and gaseous hydrogen?

2006-10-31 08:25:08 · 4 answers · asked by Michelles W 1 in Chemistry