Science & Mathematics - 24 November 2006

without lactase, lactose remains unabsorbed, lactose cannot pass easily through the intestinal wall why? is it to do with water potential?

2006-11-24 03:58:44 · 5 answers · asked by Anonymous in Medicine

workers get an increase in salary of 7% plus bonus of $800.let S(x) represent the new salary in terms of the previous salary x. find the valus of S(21,000). COLLEGE ALGEBRA

2006-11-24 03:57:49 · 4 answers · asked by koka 1 in Mathematics

how it appiares

2006-11-24 03:54:46 · 6 answers · asked by Anonymous in Chemistry

2006-11-24 03:53:38 · 2 answers · asked by wlf_a 3 in Chemistry

my wife hit her head at work and went to the hospital three days later,doctors performed a catscan,mri, and a angiogram the mri and angiogram were negative but they did find blood on her frontal lobe of her brain where she hit her head.the doctor gave her 1.nimotop...2.dialantin.....3.percocet...her headache has lessened alot,she asked me how long it would take for this too heal and to get back to normal.....any idea?

2006-11-24 03:52:59 · 3 answers · asked by allen o 1 in Medicine

2006-11-24 03:52:41 · 7 answers · asked by muppana_ms 1 in Other - Science

2006-11-24 03:52:25 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-24 03:50:33 · 6 answers · asked by ♫ Think happy thoughts ♪ 3 in Biology

Is it possible that the irreversibility of time is related to the continuous expansion of the universe which is translated
into entropy ? How do you feel about creating a computer program simulating an environmental expansion where the environment is digital ? Such model will include digital people/entities which positively interact with each other but also negatively interact with digital pathogens (elements who are constantly bumping into them, multiply and trying to destroy them, and the faster is the expansion, the more aggressive will be this negative interaction between the digital people and these pathogens. The expansion also weakens the internal structure of the digital units and in time, they will be defeated by the pathogens. In such model, philosophical concepts of aging, chances to be involved in an accident and so on, could be presented. The operator will control several parameters of the model, such as: time and speed of the simulative expansion.

2006-11-24 03:50:04 · 7 answers · asked by Fractal time 1 in Astronomy & Space

i am doing b.sc biotechnology

2006-11-24 03:49:39 · 6 answers · asked by M.M.S.V 1 in Other - Science

2006-11-24 03:49:31 · 5 answers · asked by ♫ Think happy thoughts ♪ 3 in Biology

err...randomly boring question but does anyone know ANYTHING about fractional distillation?!

2006-11-24 03:48:25 · 8 answers · asked by Anonymous in Chemistry

Ethanol undergoes combustion according to the equation

C2H5OH(l) + O2(g) ----------> CO2(g) + H2O(l)

The of ethanol, C2H5OH(l), is -1366.8 kJ/mol. Given
that:
deltaHf [CO2(g)] = -393.5 kJ/mol
deltaHf [H2O(l)] = -285.8 kJ/mol

What is the standard enthalpy of formation of ethanol ?

2006-11-24 03:47:50 · 2 answers · asked by smithwss 2 in Chemistry

2006-11-24 03:47:42 · 4 answers · asked by Anonymous in Biology

...., come out on the other side, and then let go, would you be falling down or floating up?

2006-11-24 03:47:18 · 18 answers · asked by jitty 2 in Physics

I recently visited the kennedy space centre, and the equipment used for that mission was like somthing from bluepeter, also this computor i'm at now has more power than thiers then, it seem more & more like a fix, why have they never attempted it again, why was the flag fluttering?

2006-11-24 03:46:05 · 27 answers · asked by Anonymous in Astronomy & Space

water takes color of object what is its colour ?

2006-11-24 03:46:04 · 23 answers · asked by mohit 1 in Physics

(thanks bonhommecretienne...but need a more complete answer)

A 100mL sample of 0.200 M aqueous hydrochloric acid is added to 100 mL 0f 0.200 M aqueous ammonia in a calorimeter whose heat capacity is 480 J/degreesC. The following reaction occurs when the two solutions are mixed.

HCl (aq) + NH3(aq) ---------> NH4Cl (aq)

The temperature increase is 2.34 degreesC. Calculate deltaH of neutralization per mole of HCl and NH3 reacted. Assume the densities and the specific heat are the same as for the water. (1.00 g/mL and 4.184 J/g degreesC respectively)

2006-11-24 03:43:26 · 2 answers · asked by smithwss 2 in Chemistry

1/2 2/3 3/4 7/12

2006-11-24 03:42:41 · 14 answers · asked by Carlos G 1 in Mathematics

I have found several values for the maximum possible total eclipse on the Internet (7mins 31sec, 7min 40sec and 7min 45sec seem the most popular) but none for the maximum possible annular. I need to know that the answers I get are reliable though, so please don't just quote a value you've found elsewhere - I need to know how you have derived your answer! I'm also not interested in the longest values that have occurred throughout history (or will occur in the future) as there are lots of lists of those. What I am after is the duration(s) that would occur if all factors leading to long times were present simultaneously, ignoring the fact that they could not do so in reality. On the other hand the scenarios must be realistic, so such things as orbital tilts and orbital times and distances must be possible, though not necessarily at the same time of course. Don't worry about giving a complex answer as I'm reasonably at home with the concepts of planetary geometry etc. Thanks!

2006-11-24 03:41:24 · 2 answers · asked by Steve H 2 in Astronomy & Space

Having trouble trying to solve this chem homework question. Its pretty difficult to solve.

If all the H20(g) in the atmosphere (assume it is 1% by volume) suddenly condensed to H20(l), and all the enthaply of this process was captured and converted to electrical energy, how long would this energy power an average size city of 1 million?

I know that atmospheric water vapor volume is 12.9 cubic kilometers, but cant figure out the rest.

2006-11-24 03:40:48 · 2 answers · asked by Anonymous in Chemistry

I know you have to make the denominator zero to find the vertical asymptote, but I'm unsure as to how to solve it:

y= x^2 (divided by) x(x-1)

Also, in order to find the horizontal asymptote, I know that the degree of the numerator is 1 but what is the degree of the denominator?

Thank you for your help.

2006-11-24 03:38:37 · 6 answers · asked by Avigail 3 in Mathematics

I know about all the conspiricy nutters out there, but as part of the lunar lander was left on the moon, can it be seen from Earth?

2006-11-24 03:37:55 · 21 answers · asked by Anonymous in Astronomy & Space

a ball is shot up in the air and its height, h, above the ground in feet is given by the function h(x) = -16x^2 + 45x, where x is the number of seconds the ball has been in flight.graph this function and find the x-value for which the maximum height of the ball is attained.round to the hundredths place.

2006-11-24 03:37:01 · 6 answers · asked by Jose T 1 in Mathematics

2006-11-24 03:36:53 · 5 answers · asked by JESSE H 1 in Chemistry

2006-11-24 03:34:28 · 6 answers · asked by jo c 1 in Other - Alternative

When 1.75g of CaCl2 dissolves in 125g of water in a coffee-cup calorimeter, the temperature increases by 2.44 degrees celsius. What is the heat change per mole of CaCl2 dissolved in water? Assume that all of the heat is absorbed by the water (c=4.18j/g deg C)

2006-11-24 03:33:30 · 3 answers · asked by Anonymous in Chemistry

2006-11-24 03:32:10 · 1 answers · asked by JESSE H 1 in Chemistry

2006-11-24 03:31:28 · 2 answers · asked by JESSE H 1 in Botany

2006-11-24 03:31:09 · 3 answers · asked by LTrain 1 in Physics