(Solved): The transparent form of beryl (molecular formula \( =\mathrm{Be}_{3} \mathrm{Al}_{2} \mathrm{Si}_{ ...

The transparent form of beryl (molecular formula \( =\mathrm{Be}_{3} \mathrm{Al}_{2} \mathrm{Si}_{6} \mathrm{O}_{18} \) ) that is green is called emerald. What is the mass \% silicon in beryl? F.W. \( (\mathrm{Be})=9.012 \mathrm{~g} / \mathrm{mol} \) F.W. (Al) \( =26.982 \mathrm{~g} / \mathrm{mol} \) F.W. \( (\mathrm{Si})=28.086 \mathrm{~g} / \mathrm{mol} \) F.W. \( (O)=15.999 \mathrm{~g} / \mathrm{mol} \)