Question

Silicon dioxide with the chemical formula SiO_2. how many moles of silicon dioxide are there in 25^-3g of silicon dioxide

Answer 1

Molar mass of SiO₂ = 60.08 g / mol .

Moles of SiO2 =

mass of SiO2 / molar mass of SiO2 ..............

= 25^-3g / 60.08 g / mol.