Please help me with this one can you do for me 

1. the  research on quantum dots.  Find a resource  that  you think does the best job of explaining this.  and provide  short description of what you've learned about quantum dots. after that explain me  why you think  I chose quantum dots as a topic.

 

 

2. You measure 1.27 ppm caffeine in your sample solution.  If this sample analysis solution was prepared by dissolving 0.2456 g of sample into 250 mL followed by taking a 10.00 uL aliquot and diluting it to 1000. uL, what is the concentration of caffeine in the original portion of sample (% wt/wt)?