Question

Determine number of oxygen atoms in 5.33 g of quartz.

Quartz is SiO2... I just need some guidance.

Answer 1

first you should find the molar mass of SiO2 (It is 60 gr/mol)
then use this formula:
mol=mass/molar mass
mol=5.33/60=0.088
every mol is about 6/022 *10^23 atoms and SiO2 has two oxygen atoms so ....

Answer 2

ok. Give me a sec. I'll try

Answer 3

i got 4.416x10^22 atoms of Oxygen?

Answer 4

thanks :)