Poop123123

NO2-(aq) + H2O(l) <-> HNO2(aq) + OH-(aq)

NO2-(aq) +H3O+(aq) <->HNO2(aq) +H2O(l)

K+(aq) + H2O(l) <-> KOH(aq) + H+(aq)

K+(aq) + NO2-(aq) + H2O(l) <-> KOH(aq) +HNO2(aq)

NO2-(aq) + H2O (l) <-> HNO3(aq) + 2H+(aq)

Think about the titration of a weak acid with a strong base. What is happening the titration flask to make the equivalence point pH not equal to 7

What is the pH of the equivalence point when a 25.00-mL sample of propionic acid, HC3H5O2, of unknown concentration was titrated with 0.2 M KOH. The equivalence point was reached when 45mL of base had been added. Ka for propionic acid is 1.3 × 10-5 at 25°C.

I found Kb by Kw/Ka = 7.47x10-10

Then i did 0.2*45 = 9

9/60 = 1.5x10-1

7.47x10-10 = x^2 / 1.5 x 10-1

x = 1.12 x 10-2

-log(1.12x10-2)= 9.95

Is that correct?

6 ft-pounds of work is required to stretch a spring 4 inches from its natural length. Find the work is required to stretch the spring an additional 2 inches

Its really easy, the right side of the screenshot (part 2 out of 4) V = pi Integral (???? + 24 − 6x2)( ????? − 24 + 6x2)dx

What do i put in place of question marks, i just cant figure it out...

http://i.imgur.com/Vdf2Zla.png

I am looking for a book to read that talks about most of the laws every citizen should know. Especially what and what not can the police do and such. What is legal way to defend yourself. You know just general stuff when it is okay to hit someone in the face and when not.

Please anyone has like a level 60 or 70 that they quit in BC?

Should i buy EVGA SuperClocked 02G-P4-2662-KR GeForce GTX 660 2GB 192-bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card

for 197$?

31 minutes ago - 4 days left to answer.

Additional Details

I have i7 and strong power suply, i had 570 gtx but i sold it so I know i can run it.

i have 9600 gtx or something like that, and i am running cs go, plus i am streaming so thats why i need it, you think its good video card for price?

Should i buy EVGA SuperClocked 02G-P4-2662-KR GeForce GTX 660 2GB 192-bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card

for 197$?

Ok, so I am 23 old male, and lately my left been hurting, well at least so i thought it was nut. Today when i was taking shower i touched my nuts to see if it had any bumps and i didnt find any, but, between my left nut and left there is kind of little tumor i guess, like bump , like stressed muscle. When i compare right or left side right side doesnt have it and left side has it, so what is it ? help me please i dont wanna die so young, i even havent finished college.

I also have no insurance, how much would it cost for doctor to check if there's anything wrong with me?

What life would be like for a college student that does not have to pay for his dorm or books or as a whole for his college education?"""" Instead of trying to work full time and go to school full time college student can actually focus on school. Higher grades would be so much easier to reach, because student can focus on college work instead of worrying about working to pay loans off. [Is it always true that higher grades would be easier when students are given free education and why? You want to be clearer with your discussions so to convey your ideas as clearly as possible."""" Once student is done with college they do no4t have to worry about interest rate on their loan or loan itself, because it would not exist.

That part in """""....."""""" help me figure out what to add before that part please

Ok, I am trying to study calculus and I have gotten this awesome book, called Calculus Made Easy by Thompson

I learned that dx means little bit of x

While I learned S is sum, so Sdx would mean sum of little bit of x

Then I get to second chapter and he talks about Different Degrees of Smallness , and thats where I get confused, I read whole chapter and I dont get whole point of it.

Like he has a prose in the end of chaper

Big fleas have little fleas,

Upon their backs to bite 'em,

And little fleas have lesser fleas,

and so, ad infinitum.

If someone who has this book please could you explain to me this that chapter?

Or if you just know what he means by that , please explain