The book I'm reading, has suggested to methods for assigninig the oxidation statetes in a compound. The first method includes drawing the Lwis structure of the compound. And the second one is based on some rules.
As I'm a beginner in chemsitry there are so many compounds which I can't draw...
You're right. The problem was with the scales. I used to work only with 2D curves and I don't know how long it will take to get used to these 3D surfaces.
Now, may I ask you how the problem can be solved?
When I write the conditions of the required plane, I find a system with 4 unkowns and...
Here is the problem I need help with:
Find the page perpedicular to the plane x+3y-z-7=0 and containing the points (2,0,5) and (0,2,-1).
The answer given in the book is 2x-y-z+1=0. But when I plotted x+3y-z-7=0 and 2x-y-z+1=0, by a PC runnig Maple, they don't look perpendicular to each...
Your solution looks eager and completely new to me. But the answer in the book is this:
4 X 8 X 7 X 5 = 1120.
First let me clear it up:
How many odd numbers with distinc digits are there between 3000 and 7000?
Distinc means a number like 3011 is not valid because 1 is used two...
Surely I have done the reading, these are the quetions of that chapter.
I don't get what happend to the classical physics principle, the one that said: a charged mass radiates when it accelerates.
Did Bohr model reject that principle? Or we still believe in it?
P.S I'm studing chemistry :)
I need help with these 3 questions:
1. Describe the Bohr model of the atom. How does it differ from a planetary model based on classical physics?
2. In terms of the Bohr theory why is that electrons don't spiral into the nucleus?
Consider these problems:
1. In how many ways can 7 boys be seated around a round table?
2. If seven beads of different colors are put on a ring how many different desighns can be made?
3. I have six books with identical black bindings, 8 with identical red bindings. In how many ways can I...
Here is a problem, please let me know whether my answer is right or wrong.
Locate the position of a spaceship on the Earth-Moon center line such that the tug of each celestial body exerts on it would cancel and the craft would literally be weightless.
I found two equations:
Tell me how was I soppused to carry out?
Check it out:
>f( (x-1)/(x+1)) + f(-1/x) + f( (x+1)/(1-x)) = x >Find f(x) without using derivatives nor limits nor Integrals.
Left side is not defined for x = -1, 0 or 1, but I guess we should
Let h(x) = (x-1)/(x+1), and...
I don't know, what made me think that problem is a "new and unknown " problem. Maybe some mistakes in calculations and some misleading hints in the solutions manual.
Ok, thank you very much for clearing things up.
For now let me bring another " new and unknown " problem :))
But I already had the answer, what I need is some explanations to understand the problem; NOT just a formula.
I don't really get it. Why do we use their relative speed? Why do we look at it from the perspective of the Cadillac.
I have 5 problems all the same type, A moving at a constant speed...
The driver of a pink Cadillac traveling at a constant 60 mi/h is being chased by the law. The police car is 20 m behind the perpetrator when it too reaches 60 mi/h, and at that moment the officer floors the gas pedal. If her car roars up to the rear of the Caddilac 2.0 s later, what was her...
Yet there are 2 questions for me.
1. The formula for t_y ( problem 38 ) is not INDEPENDENT of S_s as the problem asks to be (our formula is : (v_i) (0.6 s) + [((v_i)^2) / 2a ] + S_i which is equivalently (v_i) (0.6 s) + [ S_s ] + S_i ).
2. Which of the several contributing aspects requires...