Posted by Anonymous on Friday, December 3, 2010 at 8:40am.
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
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