Posted by Katie on .
what is the mass of 1.22x10^23 molcules of carbon dioxide(co2) and silicon dioxide(Sio2)?

chemistry 
TutorCat,
1)divide 1.22x10^23 molecules by Avogadro's number to convert to moles
2)multiply by molar mass of CO2 to convert to grams
(1.22x10^23 molecules)(1mol/6.022x10^23 molecules CO2)(___g CO2/1mol)