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8:31 pm, Oct 19 2008
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This thread is for if you need some help with homework or some project.

I need to do an informative speech for my basic public speaking class, and since I need to do a portfolio piece for English IV, I thought I would kill two goombas with one shell. I was thinking of doing it on manga, but I'm really bad at coming up with ideas, and if I do come up with an idea, then I can never find a good source of information on it. So, any ideas/sources I could use?

All I can remember about the guide lines is that it needs to be about 5-7 minutes long, and that's pretty much all I was given.

Last edited by blissfull_wulf at 8:43 pm, Oct 19 2008

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8:39 pm, Oct 19 2008
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Two questions:

-How much time do you have left? The sources I know of are books, and not websites, so you'd need time to procure/read them.
-Guidelines? Even if you say "informative" that doesn't really give us any idea of what it's supposed to be. Are you just supposed to give a general educational speech? If so, it's pretty easy to just pick "history of manga" or something similarly generic as a topic and go from there.

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1:46 pm, Oct 20 2008
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I updated the post, but I'm not given too many guidelines on this.

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6:28 pm, Oct 5 2009
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<.<
*had to search for this thread*

Ag (s) + HNO−3 (aq) -> H−2 (g) + NO + AgNO−3 (aq)

− = Subscript.

Someone please balance it for me. D:

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Post #325753
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6:37 pm, Oct 5 2009
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Quote
Ag (s) + HNO−3 (aq) -> H−2 (g) + NO + AgNO−3 (aq)

− = Subscript.


You should check to see if this is right because as it is I'm pretty sure it can't be balanced.

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Post #325755 - Reply to (#325753) by Vildur
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6:39 pm, Oct 5 2009
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Quote from Vildur
Quote
Ag (s) + HNO−3 (aq) -> H−2 (g) + NO + AgNO−3 (aq)

− = Subscript.


You should check to see if this is right because as it is I'm pretty sure it can't be balanced.


It should be a typo...

Silver and nitric acid should produce:

edit: I actually think I'm failing here... now I actually have to go look stuff up.

Last edited by Crenshinibon at 6:50 pm, Oct 5 2009

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6:44 pm, Oct 5 2009
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That's what I copied down from the teacher.
:<
He said that it was right...XD

I tried it so many times...
And then someone told me to treat the NO-3 as a whole? @_@
Is that right? Cause he didn't tell me that. D8<

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6:51 pm, Oct 5 2009
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It's also been a while since chem for me, but I don't think it can be balanced either.

On the left side, you have HNO-3 and the right you have NO and AgNO-3. That just doesn't work no matter what numbers you put in front of them. You're missing some Oxygen atoms on the right side no matter what you do. The math doesn't work out.

EDIT:
Basically, what I mean is that you should always have 3 times as many Oxygen atoms as Nitrogen atoms, but given what you put on the right side, that's impossible to do.

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6:53 pm, Oct 5 2009
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Blame my textbook?
@_@

From what I remember, it told us what the products were: Hydrogen gas, brown NO, and Silver Nitrate.


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6:58 pm, Oct 5 2009
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This is the first result I found when googling "silver and nitric acid":

http://answers.yahoo.com/question/index?qid=20071218133113AA a89Mt

I'm guessing your teacher wrote the equation down wrong.

EDIT:
Assuming that your teacher wrote it down correctly, this is the only way it'll work out.

2Ag + 2HNO-3 --> H2 + 0NO + 2AgNO-3

That's right, it's a zero in front of NO.

Last edited by frustratedguy109 at 7:06 pm, Oct 5 2009

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7:01 pm, Oct 5 2009
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"HEY TEACH! THE TEXTBOOK AND YOU WERE WRONG!"

T___T

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7:06 pm, Oct 5 2009
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Call me crazy (I make no claim of retaining anything from Chem), but I agree it's unsolvable.

You're missing an H on the left and an O on the right, but can't balance that out w/o throwing Ag or NO3 outa whack. You need an extra NO somewhere to get it to work.

As close as I was able to get with my meager skills was:

2Ag + 2HNO-3 --> H-2, NO, 2AgNO-3

...which has an imbalance of Nitric Oxide.

Plus, yahoo answers dude sounds like he knows his shit.

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7:13 pm, Oct 5 2009
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:[
I wish I had my textbook.

And yeah, yahoo guy does seem like it. XD

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7:15 pm, Oct 5 2009
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I got:

1 Ag + 2 H(NO)₃ = 1 H₂ + 3NO + 1 Ag(NO)₃

It works with the atomic mass, giving me 290u on each side. smile

Last edited by Humanoid at 7:29 pm, Oct 5 2009

Post #325772 - Reply to (#325748) by StarlightDreams
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7:16 pm, Oct 5 2009
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Quote from StarlightDreams
<.<
*had to search for this thread*

Ag (s) + HNO−3 (aq) -> H−2 (g) + NO + AgNO−3 (aq)

− = Subscript.

Someone please balance it for me. D:


It's going to be a oxidation-reduction (aka redox) reaction, just by looking at the oxidation states and the fact that your having solid silver become an aqueous silver ion, and an aqueous hydrogen ion (from the nitric acid) become hydrogen gas. You can't balance it by itself as you'll probably need water involved (the AgNO3 is dissolved in water after all, being aqueous and all). It's probable the formula is wrong, as NO (nitrogen monoxide) is a colorless gas according to wikipedia... If this was supposed to be a simple balancing problem and not a redox reaction, then I honestly wouldn't worry about it until redox is covered in your class (if it is covered at all).

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