Question

How many oxygen atoms are there in 52.06 g of carbon dioxide?

Answer 1

hey shinchan ur answer.............

moles of CO2= mass/molar mass= 52.06g/44g/mol= 1.183 mol 
number of molecules = moles X 6.02x10^23= 1.183 X 6.02x10^23= 7.122 X 10^23 
number of O atoms= number of molecules X 2( I molecule of CO2 has 2 atoms O) 
= 7.122X10^23 X 2= 1.424X10^24.............i hope it will help u.......

Answer 2

no' of atom = no' of moles × avagardo number × atomicity