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Tourmaline is the most colorful of all gemstones. It neutralizes negative forces and offers emotional stability. It is crystalline boron silicates compounded with metals such as Mg, Fe, Al, Na and Li.  The three most well-known minerals of tourmaline are: Elbaite                Na(LiAl2)Al6Si6O18(BO3)3(OH)4 Schorl                  Na(Fe3)Al6(BO3)3Si6O18(OH)4 Dravite                Na(Mg3)Al6(BO3)3Si6O18(OH)4   On a basis of 1000 kg of tourmaline rocks containing 25% Elbaite, 35% Schorl, 30% Dravite and 10% inerts, calculate the following: a)           kg-mol Elbaite b)           % by wt BO3 in tourmaline rocks

Tourmaline is the most colorful of all gemstones. It neutralizes negative forces and offers emotional stability. It is crystalline boron silicates compounded with metals such as Mg, Fe, Al, Na and Li.  The three most well-known minerals of tourmaline are: Elbaite                Na(LiAl2)Al6Si6O18(BO3)3(OH)4 Schorl                  Na(Fe3)Al6(BO3)3Si6O18(OH)4 Dravite                Na(Mg3)Al6(BO3)3Si6O18(OH)4   On a basis of 1000 kg of tourmaline rocks containing 25% Elbaite, 35% Schorl, 30% Dravite and 10% inerts, calculate the following: a)           kg-mol Elbaite b)           % by wt BO3 in tourmaline rocks

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
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Tourmaline is the most colorful of all gemstones. It neutralizes negative forces and offers emotional stability. It is crystalline boron silicates compounded with metals such as Mg, Fe, Al, Na and Li.  The three most well-known minerals of tourmaline are:

Elbaite                Na(LiAl2)Al6Si6O18(BO3)3(OH)4

Schorl                  Na(Fe3)Al6(BO3)3Si6O18(OH)4

Dravite                Na(Mg3)Al6(BO3)3Si6O18(OH)4

 

On a basis of 1000 kg of tourmaline rocks containing 25% Elbaite, 35% Schorl, 30% Dravite and 10% inerts, calculate the following:

a)           kg-mol Elbaite

b)           % by wt BO3 in tourmaline rocks

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