Respuesta :
To find moles from grams would be the amount of grams which in your case is 3.4 divided by the molar mass which is just adding ip Si, O2
Answer:
number of moles in 3.4 grams of SiO2 = 0.06 moles
Explanation:
SiO2 compound is the combination of silicon and Oxygen molecules. Silicon dioxide contains only 1 mole according to the question. The molecular mass of the compound is the sum of the atomic mass of each atom of element present in the compound.
This means 1 mole of silicon dioxide = molecular mass of silicon dioxide
molecular mass of Si02 = 28.0855 + 15.999(2) = 60.0835 g
If 1 mole of SiO2 = 60.0835 g
? mole = 3.4 g
cross multiply
number of mole in 3.4 g = 3.4/60.0835 = 0.05658791515
= 0.06 moles
number of moles in 3.4 grams of SiO2 = 0.06 moles
