It was a cloudy explaination when I first joined chem club in my school. My senior gave me a note about three of them (And yet I still haven't googled why should they make these three words sounds a bit different) and reluctantly gave us a worksheet to do. In my freshman, stoichiometry is the last subject to learn in first semester. I was not used to use distributive equation in my high school as the problems were always straight forward and didn't require much logic. (It means one kind of equation is needed). But when I entered highschool, I realized how my brain was not used in many years before.
I was so impressed when my senior solved the problems(that is really a standard) and decided to continue learning in this club.
But now I'm surprised about my way of thinking in the past. Moreover, the stoichiometry sheet was such a shit. So sorry but I found more mathematic and conceptual based that is so far complex than my past works. Well, that's a brief background about my stoichiometry startover.
I want to comment a bit about a problem that I found in my chem club test.
An x(assume this is a digit) Molar solution of XXX(assume this a compound) is 5 L. Determine the mass of XXX?*given the MW*
When I did the work, I wasn't prepared and very nervous. I thought the molar in this problem is mol. But note it the mol is a scale that denoted by n and Molar is concetration. denoted by M.
I filled the sheet by assuming molarity is a mol. All of the sudden I rethink about what is the 5 L doing here? Then I recalled some moments.
"Mol is a scale that reflect 6.02x10^23 particles and Molarity is mol per litre. It shows the concetration of an element or compound in a solution"
So I erased my previous answer and corrected it.
Then I realized and keep it in my the difference here. After that, I found another problems in colligative and it does contain a scale called molality.
My senior told me that Molarity and molality was different. But they didn't seem to explain the whole shit. So I found out myself when I began to learn colligative.
Well they both are concetration but according to the formula there is another difference here. When molar is n/v(volume), Molal is n/mass of the solvent. So the confusion is done here.
I hope someone is not confused about this little brats like me. and it was a bit dumb. But I praise myself by telling "YES THAT'S BECAUSE ACCELERATION! I ACCELERATE TO LEARN 3RD GRADE CHEMISTRY"
However, colligative and mol and Molar still nothing to organic in term of difficulty. So yezzz I'm still trying in organic!
Have A good day!
