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?
college chemistry.. -
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