Recent content by Sam Donovan

I'm wanted to do an experiment with interfacial polymerization; producing nylon 6,10 with sebacoyl chloride and hexanediamine. I was wondering what aspects of this reaction I could research, or what variables I can change?

Thank you! Do you think there any sites or wiki articles with the math proof for these equations?

Specifically:

I was wondering if there were any possible experiments that I can conduct in a high school lab setting.

No, not familiar. How would you use chain length?

Is there a way to predict what resins form solids based off certain hardeners.

I've been focused on epoxy resins: I thought about testing epoxy resins and how varying hardeners (mainly focused on amines: primary amines, tertiary amines, aliphatic,etc) affect "cure time" and relative strengths (this is too expensive). I thought about an experiment about esterification of...

I'm very interested in researching polymerization chemistry for my school science fair. All the ideas I have are either too expensive or not complex enough.

I was wondering if there were any good online resources for AP Physics C with notes, practice tests, etc.

I'm having a little trouble with this. I move it so it becomes ##dy/dx=200-2y## ##dy=200dx-2ydx##

Homework Statement dy/dx= 200-2y. y(0)=75 Homework EquationsThe Attempt at a Solution Do you move dx over and integrate. Do you just integrate it 200y-y^2+c

Homework Statement Find the limit of the function ( attached) Homework EquationsThe Attempt at a Solution Is the limit infinity. Found the integral as (-1/(2t))*e^-2t from 0 to 0. Isn't the integral of a function that is 0 to 0, 0. The lim of 1/x approaching zero infinity.