Science & Mathematics - 2 January 2007

What is the oxidation state of the individual atoms which make yp a molecule of HCI

A. Hydrogen has a negative oxidation state and chlorine has a positive oxidation state.

B. Chlorine has a negative oxidation state and hydrogen has a positive oxidation state

C. Both hydrogen and chlorine have a zero oxidation state.



Determine which of the following statements is true about the electrical potential for various voltaic cells.

A. The electrical potentail for an Au-Cr cell would be greater thatn the electrical potential of a Zn-Cu cell

B. The electrical potenial for an Zn-Ag cell would be less than the electrical potential of Zn-Cu cell

C. The electrical potential for a Sn-Cu would be greater than the electrical potential of a Zn-Cu cell

D. All of these


A voltaic cell made up of Cr and Al produces the following half reactions Al(s) ---> Al3+ (aq) + 3 e- and Cr3+ (aq) + 3 e- ----> Cr(S)

What is the overall equation for the reaction?

2007-01-02 06:24:12 · 1 answers · asked by cetinnovations 1 in Chemistry

How many permutations of five voters can be made?

A. 14
B. 25
C. 32
D. 120

2007-01-02 06:22:43 · 8 answers · asked by Eugene D 1 in Mathematics

2007-01-02 06:22:29 · 45 answers · asked by Jas B 1 in Mathematics

2007-01-02 06:21:30 · 8 answers · asked by Lilibeth M 1 in Biology

2007-01-02 06:21:24 · 10 answers · asked by Jas B 1 in Mathematics

2007-01-02 06:21:06 · 2 answers · asked by meron b 1 in Mathematics

I have no details :D

2007-01-02 06:19:02 · 7 answers · asked by alinus_05 1 in Mathematics

i have to make a chart

2007-01-02 06:17:13 · 3 answers · asked by Anonymous in Engineering

i have to gentically modify an organism, and i wanted to do somethign with vitamin C, what kind of food has the least amount of vitamin C in it ?thankss!

2007-01-02 06:15:08 · 4 answers · asked by Anonymous in Biology

Is Q1 correct? If not, what would it be?
Q2 is written: Evaluate: (3/4)3rd pwr * (4/5)2nd pwr = ?

2007-01-02 06:13:17 · 5 answers · asked by bzymom07 1 in Mathematics

Im using this radioshack relay:
http://www.radioshack.com/product/index.jsp?parentPage=search&summary=summary&cp=&accessories=accessories&productId=2062482&kw=relay&techSpecs=techSpecs¤tTab=features&custRatings=custRatings&features=features&origkw=relay&support=support&tab=summary
there is no mention that there is a diode protecting it, so is there a risk that it will damage my computer's PSU and compontents in the circuit? How can I prevent this, which diode and how to install it?

2007-01-02 06:12:44 · 3 answers · asked by amir_elmaani 1 in Engineering

2007-01-02 06:11:20 · 4 answers · asked by San Fran Kid 2 in Chemistry

2007-01-02 06:09:52 · 18 answers · asked by cindy c 1 in Mathematics

bill throws a 10.0g ball straight up from a height of 2.0m The ball strikes the floor with a speed of 7.5m/s. what is the initial speed of the ball?

2007-01-02 06:09:04 · 6 answers · asked by Physics 101 1 in Mathematics

2007-01-02 06:04:41 · 4 answers · asked by AJ D 1 in Other - Science

We are designing a house and we need to know how to find the measurements of each room. Please help!!!

2007-01-02 06:03:15 · 3 answers · asked by yowezz20 1 in Mathematics

Is anyone else super happy that we havn't had ANY snow yet?

(Except for poor London, who got hammered).




Windsor, ON

2007-01-02 06:00:55 · 4 answers · asked by Anonymous in Weather

and where are they located

2007-01-02 06:00:30 · 9 answers · asked by Anonymous in Biology

Somebody bright and young - please help a little old lady out with this! I have tried and tried but apparently I just can't do it. I was never good at maths, even at school. So here goes:

22 carat gold contains 22 parts of gold and 2 parts of other materials.
14 carat gold contains 14 parts of pure gold and 10 parts of other materials.
If we have 15 grams of 14 carat gold, how many grams of 22 carat gold would we get for it? (The stuff that counts is pure gold).
Could you also show how its calculated?

Thank you in advance!

2007-01-02 05:59:36 · 4 answers · asked by Anonymous in Mathematics

and where they located

2007-01-02 05:59:04 · 6 answers · asked by Anonymous in Biology

2007-01-02 05:58:49 · 7 answers · asked by ANTHONY B 1 in Mathematics

2007-01-02 05:56:39 · 21 answers · asked by flintrob420 1 in Weather

If each linear dimension is increased by the same aoumnt. What increase would result in a new storage unit with a volume 10 times the original?

2007-01-02 05:56:10 · 5 answers · asked by Anonymous in Mathematics

2007-01-02 05:55:15 · 27 answers · asked by Sajal C 1 in Other - Science

what sine wave type or shape would be viewed on a osiliscope on a car alternator NOT useing the rectifying diodes,on a closed circit,and only useing one phase of the stator winding,i dont know the anser,because of the odd shaped field poles on the rotor,

2007-01-02 05:54:22 · 5 answers · asked by tugboat 4 in Engineering

toxin in the brain
from the concentration of mercury which can be chemically measured from small samples of tissuse but to destrutive to preform on humans

2007-01-02 05:54:16 · 1 answers · asked by lesley 3 1 in Biology

2007-01-02 05:52:50 · 13 answers · asked by Celeste P 7 in Other - Science

betty weighs 420n and she is sitting on a playground swing seat that hangs 0.40m above the ground. Tom pulls the swing back and releases it, when the seat is 1.00m above the ground.

2007-01-02 05:47:09 · 3 answers · asked by Physics 101 1 in Mathematics

I cant figure out where to start, does anyone have any tips or secrets?

2007-01-02 05:47:01 · 4 answers · asked by Audrey 2 in Mathematics

2007-01-02 05:46:37 · 5 answers · asked by John 2 in Astronomy & Space