Shortney

If a 4.10 M sample of A is heated to 500 K, what is the concentration of B at equilibrium?

A(aq)⇌2B(aq)

Kc=0.00000526

Please explain your process, I would really like to understand this! Thanks in advance!

At a certain temperature, the equilibrium constant for the following chemical equation is 2.90.

SO2(g)+NO2(g)⇌SO3(g)+NO(g)

At this temperature, calculate the number of moles of NO2(g) that must be added to 2.42 mol of SO2(g) in order to form 1.10 mol of SO3(g) at equilibrium.

I got 0.784 mol, but it was wrong. I really don't think I understand the concept. If someone could help me out, it would be greatly appreciated!

I was able to get an answer of 1 / 2 / cos x, which is so close that it is agonizing! Please help!

Thank you!

I'm usually pretty good at these questions, but this one has me stumped! This is as far as I have gotten:

Left Side:

=sin^2x+cos^4x

=sin^2x+(1-sin^2x)cos^2x

=sin^2x+cos^2-sin^2xcos^2x

And this is all I got, anything else I try does not equal the right side.

If you have any other ways of going though with this, please feel free to use that! I just wanted to just start anyone off!

Thank you!

Do you have a birthmark? And if you do, where is it? Is there anything special about it?

I have a round birthmark underneath my right ear. It's a but bigger then a bottle cap. It's fairly dark, and hair grows out of it (yuck). So, do you have a birthmark?

I am a girl (16) and my guy friend (16) and I often flirt, and when we hang out will sit and cuddle each other. I am attracted to him, he isn't bad to look at, but I do not want a relationship with him. Because we are friends and I know how he is like, we just don't click in that type of way. He has had a girlfriend before when we have cuddled, or no one. I have been single. The only problem I see in this is if he is wanting more. Like a relationship. He really is a horndog, and he likes any girl really, but I still don't want to hurt him.

I enjoy having closeness with him, but do you think it is wrong if we are just friends?

Now there are more problems to this than meets the eye. My best friend Tayler (girl) is dating a boy (18) and has been for a month now. Now this boy is the best friend (now ex best friend) of the last boy she dated (17 year old). The reason is is that the guy she is dating now (Kyle) was telling her that her ex (Justin) was telling him that she was meaningless to him etc. So he manipulated her to dump her ex and start dating him. Maybe the ex was saying those things too, but he did other things to manipulate her. Kyle (the guy she is dating) also has a baby, and Tayler tells me she loves the baby (and her awful boyfriend) And she considers herself the "mother" of the baby. She is driving me insane and doesn't listen to me on how worried I am about her! I have told her, I am worried she is attatched to the baby and feels bad the baby's real mother left and will stay with the guy because she thinks she needs to protect the baby. She thinks this is baloney, but that is the type of person she is. She is a too caring person and won't let herself see that the boy could actually be abusing her. Even if she new the boy was hurting her, she would still stay with him. The 18 year old that she is dating has not "legally" hurt her, yet, but because he is 18 he can be charged for sexual assault on a miner. It's even worse because she says "well I'm ready to have sex, it's not a big deal". She comes from a very bad family of drugs and violence and is now dating someone of the same type and I am truly worried for her.

If you skipped to the end, just answer if you think a minor girl should date an 18 year old boy. Who has a drinking problem and a child.

I'm curious on what are the top favourite colours. Mine is Orange-Yellow. Kind of like a tangerine.

What is your favourite colour?

And what song?

Why?

I like "She ain't afraid, she just likes to use her nightlight" by Patrick Monohan. The song is her eyes. "Looking for the zero's in the sky to teach us how to fly, together we cry" By The Script, the song is "We Cry". And "they paved paradise and put up a parking lot" By Joni Mitchell, in the song "Big Yellow Taxi.

I don't know why I like the first one, I think it's clever I guess.

The second one, well I like the whole song, and I just like the way they say that part

And the third, well it's true.

Girls

June/April

Dakoda/ Carolina

Skylar/Blue

Autumn/Summer

Alanna/Alexa

Aliyah/Aleeyah

Brooklyn/Jacklyn

Natalie/Rebecca

Makayla/Makena

Boys

Nathanial/Mathew

James/Marcus

William/Wesley

Jason/Jesse

Parker/Patrick

Lucas/Landon

Koldon/Kayden

Finn/Fadley

And what is your favourite names all together?

When you were younger, what did you want to be (or if you are younger what do you want to be?)

Also, what career or job do you have now?

I have a 2nd Generation iPod with 8GB on it, and I was wondering how much I could sell it for? It has been in a protective case since I bought it, and has no cracks, chips and no scratches on the screen. On the backside of it it has miner scratches from a piece of gravel getting stuck under the case. With the case on you cannot even see the scratches. There is nothing wrong with the iPod, I just wanted some money so I could buy a newer one. I have been doing research, but have got numbers from 25, to 150$

Thanks :)

A boy, and a girl. You can put a first and middle name but I don't want a whole list. Just your absolute favourite.

Mine is Dakoda Morgan <- Girl

And Parker James <- Boy

I have a couple songs on my IPod that are strictly on my IPod, and not on my ITunes. This happened because i was downloading the free songs of the week. I don't like a couple of them and I would like to delete them, but when I type in the name and find the exact song it doesn't show I have bought it, and asks if I would like to buy it. I don't know what else to do, any thoughts? Thanks!

I have 4 definitions and 4 things, that I need to be matched correctly. Please help me.

1. Deputy Returning Officer

2. Poll Clerk

3. Returning Officer

4. Information Officer.

A. Directs voters to the correct poll.

B. Counts ballots at his/her poll and returns ballot boxes

C. Marks off voters names when they arrive to vote.

D. Gives voter their ballot and explains the process.

My teacher may have put 2 of those definitions together for one answer, If you know about this stuff this shouldn't trouble you.

Correct me if I'm wrong, this was a quiz we did a while ago and I didn't get these matched properly.

I used to think that obviously it will just keep going up because people are being stupid, but now I think that it may drop dramatically because the generation that will be getting married at that time will have had parents who have divorced, and they will make sure to stay with there partner. Or people may not even marry at all!

What are your oppinions? Yes or no?

I just had a concussion and am having memory loss. I have forgotton what to do in the bathroom when you have to go! What do I do?

Who would ever come up with the idea of painting your nails, and that it's only for girls? What are your opinions?

:D I'm sure I could easily find the real reason, I want to know your opinions though :)

http://www.babynames.com/Names/namelist.php

Please vote!

Thanks!

I bought The Sims 3 for my laptop just 2 days ago and have played probably over 20 hours since then. It worked fine it was smooth and I had no problems once it started running. But today I try to play and everything is glitching. It takes forever and I don't know what I did. Maybe it downloaded something? I would like to know if there is a way to fix it without just uninstalling and restarting. Thanks.