Chemistry Study Group for Spring 2009

Butterfly2Heaven · Feb 10, 2009

cm cubed = 1mL

Density = Mass divided by volume

solving for mass... this formula looks like this: m= D x V

m = 19.3g/mL x 820mL (which is 0.82 L) = 15,826 g, which is 15.8 kg (but you only should have 2 significant figures; so I would round up the number to 16kg

If anyone got a diff answer, please help

Princess_M83 · Feb 10, 2009

You are correct. I just wanted to double check myself since my cousin and I were working on it together, she was confusing me and moving her decimals the wrong way and I thought I was right.

fizzlilma03 · Feb 17, 2009

hi can anymore explain the difference between theoretical yield and experimental yield

thanks

Cilantrophobe · Feb 17, 2009

Your answer is in your question. Theoretical yield is an estimated calculated yield and experimental yield is what you yield from an experiment.

Theoretical yield is the maximum amount of product that can be produced be the amount of reactants that are used. When a chemical reaction is performed in the lab, the actual amount of product that is collected is called the actual yield/experimental yield.

Does that help?

Sand_Dollar, BSN · Feb 23, 2009

I got my second lab back. I figured I would bomb it - I started with 6.5g of material I had to sort out and ended up with 7.0g split apart - go figure. Anyway, I got a 120% on the lab!!!! :eek: We have to submit our labs electronically and my teacher liked my layout so much he asked me to post the directions so the others in the class would know how to do it. He gave me extra points for it. Good bless my teacher! :lol2:

KathyRN2B · Feb 23, 2009

That's awesome!!!

Made a 79 on the last test. I've just been swamped with this class. Me and this other girl had the 2 highest grades in the class...a couple others passed. The other class that meets on Monday nights..NO-ONE passed! He even said someone in there got a zero! And we don't even have lab! He gave everyone their tests back and make corrections and you'd get 1/2 credit for them. That's a high B for me so I'm cool! Hope you continue to do well :)

mrs.dalibra · Mar 31, 2009

Hello all,

I'm am having the hardest time with chemistry. :cry: :crying2: This class is really driving me nuts. I've been out of school for atleast 13 years and I'm having a hard time getting into the swing of it. I've brought a few self help books and start tutoring this week. Any suggestion for study help and is the study group still gong on? If soo please count me in:bow: ( I need all the help I can get). I'm new to this so can you tell me how the study groups meet and when. Thanks in advice:yeah:

Princess_M83 · Mar 31, 2009

Hello all,
I'm am having the hardest time with chemistry. This class is really driving me nuts. I've been out of school for atleast 13 years and I'm having a hard time getting into the swing of it. I've brought a few self help books and start tutoring this week. Any suggestion for study help and is the study group still gong on? If soo please count me in:bow: ( I need all the help I can get). I'm new to this so can you tell me how the study groups meet and when. Thanks in advice:yeah:

What exactly do you need help with

KathyRN2B · Mar 31, 2009

Hello all,
I'm am having the hardest time with chemistry. This class is really driving me nuts. I've been out of school for atleast 13 years and I'm having a hard time getting into the swing of it. I've brought a few self help books and start tutoring this week. Any suggestion for study help and is the study group still gong on? If soo please count me in:bow: ( I need all the help I can get). I'm new to this so can you tell me how the study groups meet and when. Thanks in advice:yeah:

I was having a hard time as well. 4 students (incl. me) passed in my class and only 2 from his other class.

I didn't have much help in terms of study groups and tutoring was offered by the instructor:banghead:

What I ended up having to do was:

1)I did all my reading before lecture. We only met once a wk so I had to make sure to divide my time up and work chemistry in EVERY day.

2) my book had a few questions after each section. Those were our HW even though he never checked. I did those.

3)we also had a workbook/study guide. I did ALL the questions in there.

4)after lecture I would re-type my notes. Any charts, etc. from the book he emphasized, I found the ppt. online at the book's website and printed it and in my binder it went. (check ur book's website for ppts, quizzes, etc)

5)I attended the tutoring anyways. He sometimes was a little more laid back in tutoring and would explain things better than in class. Check for tutoring in your school....it's free.

6)At the end of the chapter, we had review questions, pre-test and more challenging questions. I did all of those. Sometimes those questions would apply things in a different way that wasn't explained by the instructor or in the chapter. The concept was there, however, and you just had to apply it.

This may seem like a lot (and it was) but it's what I had to do to be able to keep what I was learning in my head (once a wk classes SUCKED) and be able to bring my grade up. My first test was a 42 (no-one passed that test) but I managed to pull an A for the course in the end.

Hope you were able to take something from my post. I wish you the best!

Kathy

mrs.dalibra · Mar 31, 2009

Hi Kathy,

Thank you so much for all your suggestion:D. I'll be applying your suggestion to my next study session. And thankfully I started tutoring last week. My first two test were sooo bad:crying2:. I'm hoping I can atleast bring up my next test grade up and do good enough on the final to pass the class, I'm not ready to give up yet. :bluecry1:

Congrats on gettin an A in the class!!!!!

Thanks again,

Dawn

Sand_Dollar, BSN · Apr 15, 2009

I am done Chem - HOORAY!!! I worked ahead and finished a few weeks early. I still have some marks to come in but I got an A, that's all that matters. Its finally over - whew!

~RN67~ · Apr 15, 2009

Congrats!!! :up:

Our finals are April 27... Can't wait until it's OVER, lol :bugeyes: