Recent content by pari786

Homework Statement Calculate the equilibrium constant for the reaction forming nitric oxide at room temperature, 25C. G= 1.73x10^5 J/mol, H = 180.5KJ/mol an S = 24.8J/(mol.K) Homework Equations ln K = -G/RT The Attempt at a Solution I subsiuted ln K = (-1.73x10^5) /...

1. Two ships make a trip from the planet Melmack to the planet Ork. The red ship makes the trip at a speed of 0.35c relative to the planets. The blue ship makes the trip at a speed of 0.48c relative to the planets, and while traveling, its science officer measures the distance between the...

Sorry , I misunderstood the part b) Calculate the pH of this buffer solution after the addition of 15ml of 0.1M HCl. I didn't realize that it was 5 ml of 0.1M HCl (instead). I realized after doing the calculations for three hours. Sorry about any kind of inconvience.

Homework Statement A buffer solution was formed by mixing 30ml of 0.1M sodium acetate and 15ml of 0.1M HCl a) Calculate the pH of this buffer solution. b) Calculate the pH of this buffer solution after the addition of 15ml of 0.1M HCl. Homework Equations [SIZE="4"]pH = pKa +...

Homework Statement Given two functions; y= ln(x) and y=(x^2)/8 - 2 Use Newton's Method to approximate all intersection points of the given functions, each with 3 decimal places. Homework Equations [SIZE="3"]Xn+1 = [SIZE="3"]Xn - [SIZE="3"]f(x) / f`(x) The Attempt at a Solution...

Thanks a lot Smith !

Thanks a lot Werg!

so its 3 half lives .. right ?

Homework Statement A certain first-order reaction has a rate constant of 6.70×10−3 . How long will it take for the reactant concentration to drop to 1/8 of its initial value? Homework Equations half life =0.693/k The Attempt at a Solution half life = 0.693/(6.70×10−3) = 103.43...

thankyou so much.

Hi everyone, I don't have any homework question but I need help on a different thing: I have to write a lab report on "Semiconductor Diode" ... so if you guys know any useful website that can give me some useful and important information (such as appliactions of semiconductor diode...

Homework Statement Calculate the final pH of the following solutions: a) 65.0 ml of 0.105 M HCl and 100 ml of 0.118 M sodium acetate solutions are mixed. b) 100 ml of a 0.109 M acetic acid and 100 ml of a 0.123 ml NaOH solution are mixed. Homework Equations pH = pKa = log...

[SIZE="4"][FONT="Georgia"]why do we use n as even number with simpson's rule ?

thanks anyways.

[SIZE="3"]I already said that I don't know anything about this stuff. :cry: :cry: