posted by Anonymous .
a sample of lead glass is prepared by melting together 20.0 g og silica (SiO2), and 80.0 g of lead oxide (PbO). what is the mole fraction of SiO2 and PbO in the glass?
Calculate molar mass for SiO2 and PbO
Calculate the number of moles of each material in 20.0 g of silica (SiO2), and 80.0 g of lead oxide (PbO).
number of moles = mass/molar mass
Calculate the mole fraction
mole fraction of SiO2=
number of moles of SiO2/total moles