Recent content by konartist

Homework Statement The initial concentration of reactant in a first-order reaction is 0.75M. The rate constant for the reaction is 2.75/s. What is the concentration (mol/L) of reactant after 6.5s? Homework Equations -kt=[A]initial/[A]anytime The Attempt at a Solution...

Thanks for your help, I've done the rest. You really explained number 4 really well.

There is no way that it is 54.4 mol. You need to convert ML to L before you do the calculations. Therefore, .00486L x (11.2/1L) = .0544 Molarity.

I have a few questions, that I hope you guys will be able to help with. 1. Suppose you have two metals, A and B, and the solutions of their ions, A+ and B+, Metal B is more active than metal A. Write the spontaneous redox reaction for this situation. (I know redox reactions are reactions...

I'll be the first to volunteer.

Hey guys I need some help on some chemistry questions (any help will help) 1. Is it more correct to write H+ (aq) or H3O+(aq)? Explain. Now, as far as I know, these both mean the same thing, but we'd prefer to write H+ to help understand pH level right? I'm not too sure. 2. In words, what...

The speed of light is 3.0 x 10^8 m/s, given the equation c=(x)(v) where v has the unit of s^-1 what is the frequency (v) for the wavelength (x) of 740nm light? For some reason I'm not getting the right units; maybe someone can find my mistake: 3.0 x 10^8 m/s = 740nm(v) 740nm x (1m /...

Thanks guys! Your help worked for me.

So my teacher gave us a take home CHEMISTRY test and I see this problem on it: What are the azimuthal quantum number (1), magnetic quantum number (m1 ;subscript 1) and spin number for the principle number quantum (n) 3? I have not a clue how to even start this. I've never even heard of...

Oh, ok! I didn't see the link there. Well, if anybody can tell me what to plug into mathematica I'd like to check my answers.

I just learned the Newton Method today, but it still isn't an exact zero. I really don't think there is anyway to solve this analyticaly, maybe just by a calculator? EDIT: I have mathematica 5.0, how do I enter this into the program?? Is there a retard's guide to mathematica?

first, (4-1/x)/(4+1/x) common denominators maybe? (4/x-1/x)/(4/x+1x) than [(4x-1)/x]/[(4x+1/x)] Multiply by the recpricoal of the denominator now... Can you see? You should see that some things will cancel.

What is the formula to find the Zeros of this? f(x)= x^3 - 3x^2 - 9x + 9 I just can't seem to find them. Rational root theorem: +-1,3,9 (nope) won't work with synthetic substitution Can't group it either What da hell?

2/sqrt18 \times sqrt18/sqrt18 I understand that part, but can someone please tell me how you would know when to multiply a fraction by its reciprocal opposed to its conjugate.

Whenever two letters are together like that it always means to multiply. AB = A \times B