ATAR Notes: Forum

Uni Stuff => Universities - Victoria => University of Melbourne => Topic started by: Belgarion on March 20, 2013, 05:43:28 pm

Title: Biomed Chem Prac
Post by: Belgarion on March 20, 2013, 05:43:28 pm

Hey guys. A friend of mine got 41% for their percentage yield for their paracetamol prac and is worried because half the people in the group got higher( i got 65% myself) and the other half got similar in the 40-50% range. SHould he worry? If so, how many marks can they take off? thanks

Title: Re: Biomed Chem Prac
Post by: Aurelian on March 20, 2013, 05:48:22 pm

There's generally like, an absolute maximum of two marks assigned to yield in first year synthesis pracs, and you pretty much get one of those just for having produced *something*. How harshly you get marked within that two mark buffer depends on the demonstrator, but either way - stress less :P

Also just as an aside, higher yield does not necessarily mean better; the higher apparent yield could quite easily just be because of impurities present in your final product...

Title: Re: Biomed Chem Prac
Post by: simpak on March 20, 2013, 06:25:33 pm

One time my partner dropped all my yield on the floor and we only got one mark taken off.  For turning in like 0.001 grams.  We scraped like three grains off the floor.

Title: Re: Biomed Chem Prac
Post by: Belgarion on March 20, 2013, 09:09:47 pm

thanks, will tell him tomorrow. Maybe he will finally stop bothering me =P

Title: Re: Biomed Chem Prac
Post by: Leronziia on March 23, 2013, 08:34:31 am

I got like 5% yield and still managed 2/4 for the yield component :P He/she has nothing to worry about.

Title: Re: Biomed Chem Prac
Post by: M-D on March 26, 2013, 08:55:47 am

i've got the paracetamol prac tomorrow, i wanted to know about the report which must be submitted. is it to be done before the prac? and how long should it be?

Title: Re: Biomed Chem Prac
Post by: golden on March 26, 2013, 10:45:46 am

I'm not sure if it has changed, but last year we did it during the practical itself, as in write it up from scratch as we go along.

How long? Not too long, just short statements that address the question or task. As long as you have the key points and follow the rules you should be fine. Just make sure you do the CHEMCAL before it and record the ticket number lol.

In general, you should be familiar with what to do. The demonstrators are awesome, the book is a useful resource.

Title: Re: Biomed Chem Prac
Post by: M-D on March 26, 2013, 04:51:51 pm

do we really need a duplicate carbon copy book for the prac reports or will a few loose leafs do? are the people to whom we submit the report particular that it be on duplicate carbon paper?

thanks

Title: Re: Biomed Chem Prac
Post by: golden on March 26, 2013, 05:47:29 pm

Ask the demonstrator on the first day, if they allow it that's great, if not then you can use loose-leaf for the first one then get the book.

I don't see why they wouldn't allow you to do it, because after writing it up you'd normally just rip out the appropriate sections and staple them together for hand up anyway.

Title: Re: Biomed Chem Prac
Post by: Belgarion on March 26, 2013, 07:19:21 pm

i saw many people using loose leaf and ive done 2 pracs so far (1 in week 2 and one today) so im sure its fine.