Science & Mathematics - 22 October 2007

i dont have a high tech calculater that will do this problem...will someone help me out?
(a) 1.7x10^-12
(b) 2.22
(c) 3.60
(d) 5.12
(e) 11.78

2007-10-22 13:59:10 · 1 answers · asked by Edgardo M 1 in Chemistry

2007-10-22 13:57:16 · 12 answers · asked by renato d 1 in Mathematics

2007-10-22 13:52:28 · 3 answers · asked by Juanita M 1 in Geography

Any human to be specific :)
plz answer

2007-10-22 13:51:45 · 2 answers · asked by Sakredlight 2 in Earth Sciences & Geology

1.Label your beakers “beaker #1” and “beaker #2”
2.Use beaker #1 to find out the rate of reaction of peroxide with hydrogen peroxide and use beaker #2 to find out the rate of reaction of peroxidase with hydrogen peroxide.
3.Let the celery represent the peroxidase. Use a mortar and a pestle to mash the celery until liquid starts coming out. Keep on mashing until you have 4.2ml of the liquid. Use a graduated cylinder to measure.
4.After you have the correct amount of “celery juice” pour it into beaker #1. Also add 10ml of hydrogen peroxide into the same beaker. Set the beaker aside.
5.Next, add only a pinch of manganese dioxide with hydrogen peroxide in beaker #2 to find out the rate of reaction for it. Then measure out 4.2ml of “celery juice” and pour it into the beaker. (You will have to mash the celery again.)
6.Now that you have beaker #1 and beaker #2, measure the change of mass at an interval. Measure the beakers separately using 2 scales, one for each beaker. Start at 3

2007-10-22 13:51:18 · 2 answers · asked by Anonymous in Chemistry

what is the difference of:

behavior of bacteria

and

injury to victim?


i'm doing a report of e. coli (bacteria) and it's due tomorrow.

also, 10 points for the best answer!

2007-10-22 13:50:17 · 2 answers · asked by Anonymous in Biology

2007-10-22 13:49:16 · 2 answers · asked by iamkaren_123 3 in Earth Sciences & Geology

Find the critical point of (1 + 2 x) exp(2 x).
Please do it step by step so i can follow.. i tried this but made a mistake and im trying to find out where i went wrong. Thanks!

ps/ exp(2x) is the same as e^2x

2007-10-22 13:48:18 · 2 answers · asked by Anonymous in Mathematics

i applied cosx/sinx but i ended up with
(1+cosx)/(1-cosx)
thanks

2007-10-22 13:47:00 · 3 answers · asked by Anonymous in Mathematics

did it explde OR is it still there, just not a planet?

2007-10-22 13:45:14 · 12 answers · asked by Annie Mclan 1 in Astronomy & Space

2007-10-22 13:44:56 · 3 answers · asked by furisded 3 in Biology

2007-10-22 13:42:50 · 1 answers · asked by Paul K 2 in Chemistry

i need help with this big time!!!

2007-10-22 13:41:22 · 7 answers · asked by Anonymous in Zoology

or does it only look for illegal drugs?

sorry. but, i'm curious.

2007-10-22 13:40:36 · 5 answers · asked by Anonymous in Medicine

a box is pushed up a ramp with a total effort of 65 newtons .
the efforrt,disregarding friction, is 40 newtons. if the box weighs
280 newtons and if the top of the ramp is 5 meterrs abov the ground.

how long is the ramp.?

how much is the efficency of the ramp?

2007-10-22 13:40:15 · 1 answers · asked by :}smile :} 1 in Mathematics

I need help,

the question is: a pool is a 22-ft by 36-ft rectangle that is 5 ft deep, write the number of cubic feet of water the pool will hold

2007-10-22 13:38:57 · 3 answers · asked by fan_cran_z 3 in Mathematics

2007-10-22 13:38:29 · 8 answers · asked by Claire P 1 in Zoology

Which would show the greatest and lowest ionization energy?
first ionization energy of boron,
first ionization energy of cesium,
second ionization energy of indium.
second ionization energy of strontium,
second ionization energy of xenon,
third ionization energy for calcium

2007-10-22 13:37:51 · 1 answers · asked by Anonymous in Chemistry

Solve. (x + 4)^2 = 4

2007-10-22 13:36:25 · 9 answers · asked by Anonymous in Mathematics

How do u find the derivative of r= tan^2(3-x)?

If u can please show me step by step cuz i keep getting the wrong answer. I know it involves Chain Rule or something but i jus dont kno how to do it. Thanks!

2007-10-22 13:32:35 · 2 answers · asked by tulipeliza 3 in Mathematics

We want to build a box for a cord of wood (unstacked).

2007-10-22 13:31:30 · 10 answers · asked by tailsnnails 3 in Mathematics

2007-10-22 13:31:13 · 1 answers · asked by WEINI3000 2 in Mathematics

How does the barometric pressure affect cloud cover?

2007-10-22 13:28:42 · 3 answers · asked by Anonymous in Weather

I can not figure out how to solve

20 X 10 to the fifth power + 4 X 10 to the sixth power

I know I seem really stupid, but I came in right when class was dismissed, and she just handed me the worksheet. I don't know how to solve it, and I'm not good at math in the first place. Can anyone help? I don't even need the answer, just if someone could tell me how to go about solving it. Thanks very much! =)

2007-10-22 13:27:07 · 6 answers · asked by Lindsay 2 in Mathematics

how do you find the limits of this? the answer IS -1/2..but I have no idea how you approach that answer..if would be great..if you worked out theproblem

lim rad(x^2 - 9)/2x-6
x => infiniti

2007-10-22 13:25:54 · 1 answers · asked by Anonymous in Mathematics

1.93 is what percent of 300

2. if y varies directly as x and y= 8 when x= 3, find y when x= 5

3. if y varies inversely as x and y= 15 when x= 3 find y when x= 5

4. how heavy is an 800-foot reel of cable if a piece 6 feet long weigs 5 pounds

5. a price of 180 was increased to 207. find the percent of increase

6. a stero normally selling for 320 is discounted 18% find the sale price

7. find P(at least 5)

2007-10-22 13:23:19 · 7 answers · asked by Anonymous in Mathematics

Estimate the volume of the fiberglass shell.

2007-10-22 13:22:54 · 3 answers · asked by wicky034 2 in Mathematics

2007-10-22 13:22:11 · 7 answers · asked by mikegemmati 1 in Mathematics

2007-10-22 13:20:54 · 4 answers · asked by Anonymous in Mathematics

A. Chlorine B.Hydrogen C.Sulfur D.Magnesium.

2007-10-22 13:20:15 · 3 answers · asked by Mr.Nightfire 2 in Chemistry