Science & Mathematics - 26 October 2007

2007-10-26 15:19:16 · 1 answers · asked by Gideon 1 in Chemistry

hydrogen bonds are very important in which of the following molecules: proteins, sugars, fats.
polar molecules result when: there is an equal/unequal sharing of electrons, ot there are 4 or more atoms involved.
how many carbon atoms are fond in sucrose?

2007-10-26 15:02:31 · 1 answers · asked by Anonymous in Chemistry

on my test, it's written as 34/53. how do i figure out my percentage for this test? did i pass or fail?

2007-10-26 15:01:51 · 14 answers · asked by Anonymous in Mathematics

How can enzymes work both ways???

2007-10-26 15:01:27 · 1 answers · asked by Curious 1 in Chemistry

2007-10-26 14:57:33 · 10 answers · asked by Jasumi 4 in Biology

My book says the answer to the problem below is -1, but I keep getting just 1. Can someone show me step by step how to do the problem below. If the answer is just 1..you can just say my book problem put the wrong answer on accident.

Find the limit as h approaches 0 for the function :
(1/(1+h)-1)/ h

2007-10-26 14:49:40 · 4 answers · asked by fiestyligerwoahman 2 in Mathematics

I understand how to write the equations from the word problem, what I am having problems with is the step -by-step completion of the problem.
Example:

The combined cost of one advance ticket to a show and one same-day ticket was $65. It is known that 40 tickets were sold in advance and 35 the same day, for total receipts of $2425 . What was the price of each kind of ticket?

x+y=40
40x+35y=2425

Now how do I solve this step-by-step? Help please because I know there are rules, I just don't know what they are and guessing what x and y might be seems to take too long :o(. Thanks

2007-10-26 14:47:33 · 11 answers · asked by Heidi Ann 2 in Mathematics

a. it has a negative electrical charge
b. it has a positive electrical charge
c. it has no electrical charge
d. the electrical charge on the proton baances the electrical charge of the neutron

2007-10-26 14:43:56 · 2 answers · asked by jennaluv6969 1 in Chemistry

I need to know this quick for my science project!!!!

2007-10-26 14:42:21 · 4 answers · asked by Luis 2 in Earth Sciences & Geology

I've often seen this particular insect. It appears quite common, but I never learned its name. It's got 6 legs and 2 antenna. It's back is flat, almost to the point of seeming to have no head (I'm not sure if it can fly), and at the back of its back is an upside down V in light read. It appears to move rather slowly, in what to humans would be a brisk walk, taking its size into account, which I'd estimate is 1-1.5 cm long, or maybe a half inch. Also, I live in NY state, where at certain times of the year they seem to be very abundent. I'm sorry I can't give much more specific information.

2007-10-26 14:40:14 · 2 answers · asked by kvn8907 3 in Zoology

Something for Work so I can pass to be manager and the question is above which i just can't work it out? Can anyone help email me fpums.ftkk@hotmail.com (my new email )

Thanks

2007-10-26 14:37:41 · 1 answers · asked by Anonymous in Chemistry

That is the skull protecting that all important Computer we call a brain,why is it in this location.It can be accepted that we grew fingers over time to assist us in our daily life but the skull.Boy what did i start,but interested to know the theories.

2007-10-26 14:36:48 · 6 answers · asked by realdolby 5 in Biology

2007-10-26 14:33:18 · 6 answers · asked by Anonymous in Weather

2007-10-26 14:31:48 · 2 answers · asked by S i r i 1 in Mathematics

f(x0 = 2 - X2 adn g(x) = 2x^3 - 5

solve:
(f +g)(2)

(f-g)(-3)

(FG)(-2)

(f/g)(4)

I am SOO LOST

2007-10-26 14:31:35 · 4 answers · asked by a a 1 in Mathematics

2007-10-26 14:24:36 · 4 answers · asked by ♥leslie:) 1 in Earth Sciences & Geology

As i look outside that theres a moon itself with this big ring around it.

2007-10-26 14:20:47 · 9 answers · asked by Anonymous in Astronomy & Space

is it possible to do a brain transplant if you died?
in other words, put the brain into a live body...and youd be you with all the same knowledge and memories just into a different body?
i know the brain needs oxygen....so once it is removed, cant u hook it up to an oxygen machine or something until the operation is ready?

2007-10-26 14:19:02 · 20 answers · asked by Andrew Z 3 in Medicine

With respect to the origin O, the position vectors of points A, B and C are (2, 3), (4, -2) and (-3, -3) respectively.

(i) A point E (-2, p) is such that 2 |CE| = |AB|. Find the possible values of p.
Ans: - 5 1/2 or -1/2

(ii) Find the coordinates of the point Q if 2 CQ = BA + 1/2 AC.
Ans: (-5 1/4, -2)

Please help by showing workings...thanks

2007-10-26 14:16:18 · 2 answers · asked by Anonymous in Mathematics

If a hexagon is resting on a flat side, and has a total height of 18, what is the length of each side of the hexagon?

2007-10-26 14:13:23 · 4 answers · asked by Anonymous in Mathematics

I am trying to divide a circular 2-d object (plate) into 6 pieces. The diameter is 7 inches. (think pizza) I do not have a compass, so does anyone know how I might go about doing this so it can be even? Please and Thanks!!

2007-10-26 14:10:46 · 3 answers · asked by Buttered Squash 1 in Mathematics

2007-10-26 14:05:05 · 9 answers · asked by Nicole D 1 in Mathematics

2007-10-26 14:03:46 · 8 answers · asked by Anonymous in Mathematics

IM me. magster1220
if you have aim. i wanna talk to you. or just tell me on here. i find these things really interesting.

2007-10-26 13:52:38 · 17 answers · asked by Anonymous in Paranormal Phenomena

2007-10-26 13:50:02 · 21 answers · asked by Anonymous in Astronomy & Space

Can you make 4 cars line up and in a horizontal line on a four lane u.s . express way
you cant exceed the speed limit of 55 mph and and must all end doing a speed limit of 55 mph

all cars start out driving in a vertical line doing the speed of 45 mph with 50 ft between cars, they must end doing a speed of 55 mph

the minnimum speed thay can do is 45 mph and the max they can do is 55 i need to know the exact time each car will act and exactly what the action will be

you must obey the speed limit and THE LAW (COPS) ARE FOLLOWING BEHIND YOU AND INFRONT OF YOU AS TO MAKE SURE YOU ARE FOLLOWING THE MINIMUM AND MAXIMUM SPEED LIMIT , there is no trafic and all cars are brand new and have the same reaction time , you must be going at least 50 mph in the two left lanes

you must explain any formulas u use and your method of arriving at this answer

stars for all legitimate(reall attempts) answers ten points for the most logical(in my opinion)

2007-10-26 13:48:09 · 1 answers · asked by ~Bruce~_~Bruce~ 3 in Other - Science

2007-10-26 13:47:13 · 1 answers · asked by Anonymous in Chemistry

This is for a lab I did in my chemistry class where we heated hydrates like Copper Sulfate and Magnesium Sulfate. I found out the amount of joules used in the hydration process for them, but don't know how to convert them to "energy of hydration per mole". 217.4 joules was thr amount for Copper Sulfate.

2007-10-26 13:45:32 · 3 answers · asked by Kevin S 1 in Chemistry

2007-10-26 13:45:15 · 9 answers · asked by theBoyLakin 3 in Astronomy & Space

When a wood or plastic burns, smoke comes out of it and we can see it but we are not able to see the smoke of sun. Why?

2007-10-26 13:44:10 · 20 answers · asked by Anonymous in Astronomy & Space