Cathy Said:

I am trying to write a lab report and i dont have an example to go by..please help ??

We Answered:

you should start with Purpose (underlined) then state the purpose under that. Ex: The purpose of this lab is to show how to separate the isomers of ibuprofen.....Then Ex. Procedure (underlined)...Under that, you have to state word for word how to complete the exp....the rule is that someone should be able to follow your lab book and do the entire procedure. So you need to say: Obtain 250 mL water, pour in beaker, add 25 mL HCl...set aside. Break apart a 200mg ibuprofen tablet and break up in the acid water soln' till completely dissolved. add 25 mL of ether to the beaker (then results would say...upon addition of the ether, a white solid formed) you could write Procedure in one column with results next to it to show what you do and the observation that follows. You disscussion will be your conclusions/calculated results. Never scribble out your writings, mark through with one line if you mess up and don't use pencil or white out. Never tear out any pages either.

Kenneth Said:

I'm writing up a lab report on a solubility lab and I need a little help on this one part.?

We Answered:

There's so many factors that determine if something dissolves or not, but here's a few I can think of...

- surface area
- solvent
- type of solid
- temperature

Solvents/Type of solid:
Generally 'like dissolves like', so non-polar solvents like a hydrocarbon will dissolve non-polar substances.
For example something polar, like water, will dissolve salt (ions) well... while something like oil won't dissolve salt... that's the sort of thing.

There's also things like the dielectric constant that can help determine how well the solvent will dissolve something. Also whether a solvent is 'protic' or aprotic... but that's deeper territory.

Surface area:
Pretty self explanatory, crush something up it will dissolve better.

Temperature:
Heat stuff up, things dissolve better usually.

Kevin Said:

lab report?

We Answered:

Hey Emily,
You can visit the following websites:
http://www.capitol-college.edu/administrativeoffices/library/tutorials/writingguide/lab_format.shtml
http://www.lakesideschool.org/upperschool/departments/science/bio/labreport.html
http://www.union.edu/PUBLIC/BIODEPT/ResearchReports.html

I hope that this helpful and goodluck :-)