10th graders unite!

[katebenz518]

We need more 10th graders.

 

[Natasia_Vae]

I'm in 10th grade!

I really need some help right now. I have a Chemistry test tomorrow and I'm awful at it. How do I calculate the percentage of aluminum in Al2O3?

 

[Lila]

I'm in 7th grade. And, for those of you with May birthdays, mine is May 27th.