CHEMISTRY COMMUNITY

Nilla Sivakumar 2H

I think that one's on the formula sheet too :)

Nilla Sivakumar 2H

Not particularly related to the final itself, but for future reference - will we still have access to Chemistry Community after this quarter ends?

Nilla Sivakumar 2H

In something like this, the values would be given - either in the problem or in a table. I think.

Nilla Sivakumar 2H

leilarishwain_3H wrote:So we will not be asked to name compounds with the common names on quiz 3? Only IUPAC names?

Yep! That's what Dr. Lavelle said in lecture :)

Nilla Sivakumar 2H

It does matter, especially in terms of naming, because it could be 2 Methyl cyclohexene, or 3 Methyl cyclohexene, etc... These are very different molecules in terms of specificity and recognition by other molecules (like enzymes), and should be treated as such. The naming convention is that if ther...

Nilla Sivakumar 2H

SarahTian3k wrote:Could someone please explain number 7? I keep getting 7.46x10-3 min-1

Are you positive you're using the correct order equation? For first-order reactions it's ln[A] = -kt + ln[A₀]

Nilla Sivakumar 2H

Is there a reason why number six's answer has three significant figures despite the given concentration 0.35M having two significant figures? Do we not bother with sig figs when ln is involved? I think the rule with logarithms and, by extension, natural logs, is to count out the number of sig figs ...

Nilla Sivakumar 2H

I was confused about this too, but then realized that E and E° are completely different things.

Nilla Sivakumar 2H

On Midterm 2013 Question 7, we seem to assume (after balancing the redox equation) that the number of moles we're dealing with is 10. Is that number taken off of the reduction half-equation, where we end up with 10 moles of bromide ions? Does this always apply (i.e. we always deal with the number of...

Nilla Sivakumar 2H

Nilla Sivakumar 2H wrote:For the Winter 2013 midterm, question 2B, I can't get the answer despite following along exactly. I keep getting 57 degrees instead of 64.

55000 = 275(4.814)(deltaT)

Never mind. I was using the wrong value for the heat capacity of water.

Nilla Sivakumar 2H

For the Winter 2013 midterm, question 2B, I can't get the answer despite following along exactly. I keep getting 57 degrees instead of 64.

55000 = 275(4.814)(deltaT)

Nilla Sivakumar 2H

Has it been decided whether or not we will have lecture on the day of the midterm?

Nilla Sivakumar 2H

I think you just plug it into the first one because you have the ₀ subscript on all the givens, so you'd be solving for delta G₀.

Nilla Sivakumar 2H

Does it work on Internet Explorer? Sometimes I only have access to a computer that uses Internet Explorer.

Nilla Sivakumar 2H

When batteries die, does that mean that the redox reaction has gone to completion?

Nilla Sivakumar 2H

That's right!

But are there answers to the practice quizzes that are in the course reader?

Nilla Sivakumar 2H

Is any element in its "pure" form ever more than a diatomic molecule? Would there ever be a reason to use O3 or other technically "pure" forms?

Nilla Sivakumar 2H

Are practice quizzes able to be used to replace a quiz as they were in Chem 14A?

Nilla Sivakumar 2H

I felt like I had to share:
https://drive.google.com/file/d/0B6RLU8gBOC5oODJPVXUwZEhVeDQ/view?usp=sharing

Nilla Sivakumar 2H

Will there be questions on indicators on the final?

Nilla Sivakumar 2H

Any chance someone from Hitch could get in on this?

Nilla Sivakumar 2H

What do you call 6.022*10^23 guacas?
A guacamole!
It's Avocado's Number!

CHEMISTRY COMMUNITY

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