Which is the correct chemical formula for silicon dioxide?

a. sio
b. si2o2
c. sio2
d. 2sio

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer