how many atoms of oxygen are in 0.100 mol of silicon dioxide? please explain how to get answer!

Question

anonymous · Answer

SiO2
n=N/L -> N= n*L = 0,1 * 6,022*10^23= 6,022*10^22 molecules of SiO2 *2 equals atoms of O = 1,2044*10^23

anonymous · Answer

There are 2 atoms of oxygen in $$SiO _{2}$$ . Therefore, using Avogadro's number (which tells you the number of particles per mol of any given substance) and dimensional analysis:

0.100 mol SiO_2  |   6.022 * 10^23  |   2 atoms  |
------------------------------------------   = 1.20 * 10^23 atoms
                           |   mol SiO_2         |

anonymous · Answer

Thanks so much!