136. Express the composition of each of the following as the mass percent of its elements (percent composition
a. sucrose (C12H22011)
b. magnetite (Fe3O4)
C. aluminum sulfate (Al2(SO2)3)

Nonpoint source pollution is difficult to control because it

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!