After burning 6.08g of silicon and carbon mixture, 8.4g of solid product was produced. The gaseous product was let through a 100mL 15% NaOH solution (density = 1.1g/cm^3). What was the silicon and carbon composition in grams?
The reaction of excess oxygen with C
The reaction of excess oxygen with Si
The solid burning product of the mixture is
The atomic masses are
Molar mass of
From equation(2) we see
So composition in the mixture