zadatak

Submitted by nolenk on Thu, 01/22/2015 - 12:23
nolenk's picture
Forums: 
Opšta diskusija

Izračunati broj atoma kiseonika u 50 mg hloraste kiseline. 

milicaradenkovic's picture

milicaradenkovic - Thu, 01/22/2015 - 17:58

HClO2

n(HClO2)=m/Mr=50*10(-3)/68.5

n(HClO2)=0.00073 mol

n(O)=2*n(HClO2)=0.00073*2=0.00146 mol

N(O)=n(O)*Na=0.00146*6*10(23)=8.76*10(20)