***Chemistry - Fall 2005***

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Who else is taking Chemisrty this semester? I thought maybe we can check in with each other, and help each other out.

If there is enough of us maybe we can even get a sticky.

I am taking Health Science Chemistry 1.

Specializes in Operating Room.
hmm my teacher didn't make us do cm3. i should ask on that one! :uhoh3:

i'm thinking, if you multiply 2cmx2cmx2cm you would get 6 cm3.

...

exam 1 went ok. i think i did well. i'm sure at least a b, if not an a. i doubt i made a 100, just from careless mistakes, but i don't want to be upset either if i make a b. lol

lab today was fun. it was our 1st "real" lab. my group chose to chart the cooling rate of water in 3 different types of containers (stirofoam, aluminum, and glass.) of course, the stirofoam cooled at the slowest rate, with the aluminum & glass cooling at the same rate.

goggles bite though. lol

i'll be reading over our next couple of chapters & trying to learn the stuff on my own along with the powerpoints for next week. we only had the exam today, so no new lecture stuff to study. (hate that over the weekend i don't have new notes to study!!!)

anyway, i'm sure i'll be back to ask more questions! lol

good luck to you all, and thanks for your help!!!

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I have to write a paper for my Chem class. I have to find an article having to do with Chemisrty, than basicly write a paper about my opinion of the article.

I can use something off the net, the newspaper, magazines etc...

What subject should I look for?

I thought maybe I could find something on some sort of medication, and the chemistry behind how the drug interacts with the body.

Does anyone have any ideas other than that?

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Specializes in Operating Room.

How about newly discovered elements? ...may not be too easy, who knows. It seems pretty interesting to me as to how they can find a new element now days.

Good luck with whatever you decide to write about. :)

I have to write a paper for my Chem class. I have to find an article having to do with Chemisrty, than basicly write a paper about my opinion of the article.

I can use something off the net, the newspaper, magazines etc...

What subject should I look for?

I thought maybe I could find something on some sort of medication, and the chemistry behind how the drug interacts with the body.

Does anyone have any ideas other than that?

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:rotfl: :rotfl:

I hope the instructor doesn't give a confusing problem like that ugggh lol

ANOTHER QUESTION!!!!

When you are finding Mass (m=vd) or Volume (v=m/d) how do you write your answer?

is it like 13.6 g/ml or just 13.6 g?

or is volume just mL or mL/g

I know density is g/ml so, I'm just wondering...

2 classes b/4 a test is not enough!

This question has already been answered for you, but one thing that helps is that when you set up your problem, if you don't get the correct unit, then you know you've done something wrong.

Ex: You're asked to get the mass of something with the volume and density given. The volume is 50mL and the density is 50g/mL.

The problem will be set up as m=(d)(v)

m= 50mL x 50g/mL

The mL's will cancel each other out and wala you are left with grams. If you get something other than grams, then uh oh!

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Thanks Moonpie. I now have the answers. This is what they are: The first one is 11.3 kg/m3- I don't understand why it is kg/m3 instead of g/mL - Do you?, The next one was set up just as you had it 1.2/.12 = 10g, The next one came out close to your answer, it was 5.04 x 10 (exp -5). I am going to go in early or check with the tutoring lab for some extra help. Luckily we are still on chapter one so I am going to try and stay on top of things.

Fun2care - Thank you for your memorization techniques. I actually have no problem with remembering things like that. My concern is taking the word problems and actually trying to figure out how/if to plug them in to the equation and when you bring in the exponents do they remain negative depending on where they are? I have so many questions I can not wait to go back to class and have them answered. I am so glad you are all here. It's nice to see the posts of people who are ahead along with the answers I am sure they will help all of us.

I have no idea why the units in the 1st question would be kg/cubic meters. I've taken gen chem 1 & 2 and o-chem 1& 2 and I've never seen it written that way. It seems strange that they would want your class to learn it that way versus the standard g/cm or g/mL. Even the molecular weight of all of the elements on the periodic table are in g/mole. The 1st problem gave you the units grams and mL and thus I would assume it's g/mL and not kg/m^3.

With the 3rd problem I assume then that the density was given as kg/m^3 and that would definitely give a very small value for the mass. I guess if you see the density with those units, don't convert the dimensions for volume from meters to centimeters. You'll be able to cross out "meters" when you multiply the density and volume and you'll be left with kg.

I hope the tutoring lab was able to help you much more than I did. I'm on vacation right now but when I get home, I'm going to look through my old chem books and see if I can find density written aother way besides g/mL! :chuckle

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Specializes in Operating Room.

LOL Soleilpie. Have a great vacation!

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Specializes in Operating Room.

Does anyone have any good notes on Stoichiometry? I'm trying to "prelearn" it before class Monday, and all I have is a printed out Powerpoint. (Doesn't do much good before or after class, actually.)

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Soleilpie- My professor says that they were probably just showing the relation between the units- the answer was exactly the same no matter what the units were. So no conversion was necessary.

I found a good website chemistry.about.com/od/generalchemistry any topic your interested in just type it in the "search". Fun2care- I tried stoichiometry and it had 1-49 results.

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Specializes in Operating Room.

Thanks, I'll look at it. I did search earlier, and looked at a few today. Hopefully, one of these will be good.

Soleilpie- My professor says that they were probably just showing the relation between the units- the answer was exactly the same no matter what the units were. So no conversion was necessary.

I found a good website chemistry.about.com/od/generalchemistry any topic your interested in just type it in the "search". Fun2care- I tried stoichiometry and it had 1-49 results.

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Who else is taking Chemisrty this semester? I thought maybe we can check in with each other, and help each other out.

If there is enough of us maybe we can even get a sticky.

I am taking Health Science Chemistry 1.

I am taking health chemistry as well. I have never had chemistry in my life

not even in high school. Maybe we can email each other for help.

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Specializes in NICU.

Wondering if someone could help with a problem. Here goes:

A patient is given 1L of glucose solution intravenously. If the solution contains 100 g glucose, a carbohydrate, how many kilocalories would the metabolism of that glucose produce?

Thanks,

Kristen

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Specializes in Operating Room.

oooh I don't have a clue! Unless someone else can answer, that may be a question for those already in nursing school! (That is chemistry?)

Wondering if someone could help with a problem. Here goes:

A patient is given 1L of glucose solution intravenously. If the solution contains 100 g glucose, a carbohydrate, how many kilocalories would the metabolism of that glucose produce?

Thanks,

Kristen

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