A sample of silicate weighing 0.5000g is decomposed and subsequently yields a mixture of NaCl and KCl weighing XXXXXXXXXXg. These halides are dissolved and treated with AgNO3 and a precipitate...

A sample of silicate weighing 0.5000g is decomposed and subsequently yields a mixture of NaCl and KCl weighing 0.1803 g. These halides are dissolved and treated with AgNO3 and a precipitate weighing 0.3904 g is obtained. Calculate the percentage of Na2O and K2O in the mineral.