Science & Mathematics - 10 October 2007

For the reaction show below determine the rate law.

H2O2 + 3I-(aq) + 2H+(aq) → I3-(aq) + 2H2O (l)


The following data were obtained:

[H2O2] [I-] [H+] Initial Rate (mol/L s)
0.10 0.10 0.10 1.15 x 10-4
0.10 0.20 0.10 2.30 x 10-4
0.20 0.20 0.10 4.60 x 10-4
0.20 0.10 0.20 2.30 x 10-4


Calculate the rate law for this reaction


They want the answer in rate = k [H2O2] [I-] [H+]

2007-10-10 11:23:42 · 1 answers · asked by duldey D 2 in Chemistry

a) OF2

b) N3-

c) NH3O

d) BrF3

e) C2H6O

2007-10-10 11:23:16 · 1 answers · asked by Anonymous in Chemistry

How much force in newtons is used to break an egg on the edge?

2007-10-10 11:23:12 · 3 answers · asked by Anonymous in Physics

2007-10-10 11:23:02 · 1 answers · asked by arima87 1 in Chemistry

What organs suffer most from eating too much chocolate?

It's a serious question. I'm on my second pot of Nutella this week and it's only wednesday! Apart from that this is what i've scoffed in chocolate this week: 3 king size Mars bars, 1 1/2 king size Twix, 2 king size Snickers, 3 Reece's nutrageous bars bars and 1 Reece's Peanut Butter Cups in Chocolate. I do eat properly too for those that are about to get the health bible out. Today i've had home-made soup with veg and barley and steak with sauce tonight. last night i had pork belly with potatoes and savoy cabbage.
My chocolate eating goes in binges. Once i get over this one i might not touch the stuff for weeks on end.
Been tested for diabetes on various occasions and it's always come back i'm not.

Any thoughts anyone?

2007-10-10 11:21:04 · 10 answers · asked by Part Time Cynic 7 in Medicine

If humans at one time could tracel at the speed of light and made their way across the galaxy, then the world wich they have left would be completely diffrent then the world at which they returned. If this is the case it answers many of the unaswered questions from the items that we have found from the past. Such as the Crystal Skulls from the Myans and the Pramids found across the world. If the world at one time was advanced and was hit by a crater or such, it would change the axis. The world at which we are walking now was at once the artic and the artic at one time was the Rainforests of yesterday. When Humans are displaced they make what is comfortable to them and what they know. This is why we find Pyramids across the world. If you lost everything you would still build a house and a bed however you would have lost the ability to create the elaborate creations of which you once had. Just Think about it.

2007-10-10 11:18:59 · 7 answers · asked by truckeroif2 1 in Astronomy & Space

Please solve for the given variable and please show how you got the answer. There is No Possible Answer to one of the equations. I tried and i can't figure it out. Please help!Thank you!!

Equation:
5(z+1) + 6 = 3(8+z) + (2z - 13)

Equation:
5 - (8 - 3x) = (4x + 7) - x

2007-10-10 11:14:55 · 4 answers · asked by Anonymous in Mathematics

An astronaut on the Moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 26 m/s, what is the range of the projectile? [Hint: The acceleration due to gravity on the Moon is only one sixth of that on the Earth.]

2007-10-10 11:14:37 · 2 answers · asked by Anonymous in Physics

but do you trust pharmacists more than MDs when it comes to which drug is best, dosage, side effects, kinetics, and why?

2007-10-10 11:06:31 · 4 answers · asked by SQD 2 in Medicine

2007-10-10 11:06:12 · 4 answers · asked by Anonymous in Biology

if it was 12 o clock noon in dallas what time would it be in newyork???

2007-10-10 11:05:58 · 5 answers · asked by Anonymous in Geography

Hey Please help me with this question... i think they fall at same time...

if a bus and apple are dropped from same height which hits ground first? explain

2007-10-10 11:04:40 · 6 answers · asked by mbmimomf 1 in Physics

r(18r^2-39r+20)

2007-10-10 11:02:51 · 3 answers · asked by Anonymous in Mathematics

use of propane and oxygen

2007-10-10 11:02:44 · 5 answers · asked by cule9999 1 in Engineering

whatis the energy's future use in society?

2007-10-10 11:02:40 · 6 answers · asked by dokifiedbyluv 1 in Astronomy & Space

wat is the difference between a reflecting, and a refracting telescope?

2007-10-10 10:57:32 · 4 answers · asked by Hick Chick<3! 2 in Astronomy & Space

Why is the Arctic ice melting so much faster than the ice sheet in Antarctic?

2007-10-10 10:57:03 · 2 answers · asked by cs 1 in Earth Sciences & Geology

I need to know how gas and dust get into space for a report I'm writing I can't find the answer anywhere...please help

2007-10-10 10:55:57 · 4 answers · asked by HeyBrittany! 2 in Astronomy & Space

2007-10-10 10:55:42 · 6 answers · asked by JOHNNY J S 1 in Mathematics

A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x^4 from x=−1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top. Note: The weight of water is 62 pounds per cubic foot.

2007-10-10 10:54:50 · 1 answers · asked by mjs3382 1 in Physics

The answer's 6ab/a^2-4b^2 but how?

the other one is
slove the equation 6/5r-2 -1/4 = 3/4-10r

please explain!

2007-10-10 10:53:56 · 2 answers · asked by Anonymous in Mathematics

Which of the following compounds do not require resonance structures to provide a reasonable description ?

a) ClCCH

b) CO32-

c) NH3O

d) BrF3

e) H2O2

2007-10-10 10:51:07 · 1 answers · asked by gotMUNCH 2 in Chemistry

The fastest recorded pitch in Major League Baseball, thrown by Nolan Ryan in 1974, was clocked at 162.3 km/h (100.8 mi/h). If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 18.3 m (60.0 ft) away?
m

2007-10-10 10:49:57 · 2 answers · asked by Anonymous in Physics

A daredevil jumps a canyon 13 m wide. To do so, he drives a car up a 14° incline.
(a) What minimum speed must he achieve to clear the canyon?
m/s
(b) If the daredevil jumps at this minimum speed, what will his speed be when he reaches the other side?
m/s

2007-10-10 10:48:55 · 1 answers · asked by Anonymous in Physics

2007-10-10 10:48:05 · 2 answers · asked by JOHNNY J S 1 in Mathematics

a corner lot that originaly was a square lost 185 square meters of area when one of teh adjacent streets was widened by 3 m and the other was widened by 5 m. find the new dimensions of the lot.

2007-10-10 10:48:00 · 1 answers · asked by Anonymous in Mathematics

You and your friends push a 74-kg greased pig up an aluminum slide at the
county fair, starting from the low end of the slide. The coefficient of
kinetic friction between the pig and the slide is 0.070.

(a) All of you pushing together (parallel to the incline) manage to accelerate
the pig from rest at the constant rate of 4.2 m/s2 over a distance of 1.5 m,
at which point you release the pig. The pig continues up the slide, reaching a
maximum vertical height above its release point of 45 cm. What is the angle of
inclination of the slide?
°


(b) At the maximum height the pig turns around and begins to slip down once
slide, how fast is it moving when it arrives at the low end of the slide?
m/s

2007-10-10 10:47:29 · 4 answers · asked by NiCkDlAyDsMaN 2 in Physics

A box slides down a 26.2degree ramp with an
acceleration of 1.07 m/s/s.
The acceleration of gravity is 9.8 m/s/s.
Determine the coefficient of kinetic friction
between the box and the ramp.

2007-10-10 10:42:21 · 1 answers · asked by lilprincess_2good4u 1 in Physics

Find to the nearest degree the < of elevation of the sun when a man 6' cast a shadow 4'.

2007-10-10 10:41:25 · 4 answers · asked by blahhhhhh 2 in Mathematics

The drama club is selling tickets to its play. An adult ticket costs $15 and a student ticket costs $11. The auditorium will seat 300 ticket-holders. The drama club wants to collect at least $3630 from ticket sales.

Write a system of four inequalities that describe how many of each type of ticket the club must sell to make its goal.

2007-10-10 10:39:46 · 2 answers · asked by Anonymous in Mathematics