Im a senior high school now and I am so happy. I miss junior days esp. chemistry.
My problem right now is..hmm.. i forgot how to get the density of the cylinder
V=2\pir2h
thats the formula of the cylinder right?
and I am confuse..
r2=0.200m ->do i have to multiply it 2 times?
thanks...
Kinda help me this..when I am in our class, our teacher discuss how to determine the empirical formula and the molecular formula of a compound having the given percentage composition and molar mass but i aint listen because i have headache.
a) 24.68% K, 34.81% Mn, and 40.51% O;molar...