• Percent composition by element

    Element Symbol Mass **Percent**   **Aluminium** **Al** 15.772%   Oxygen O 56.113%   Sulfur S 28.115%
    

  • Hello! To calculate this, we should know the atomic masses of (aluminium), (sulfur) and (oxygen) atoms in some units. We can choose any units but the same for all types of atoms. Aluminium in such a molecule has the mass Thus the percent in question is so the answer is 15.8%.

    Likewise, what is the percent of sulfur in aluminum sulfate? Thus, oxygen contributes about 56% of mass to aluminum sulfate. Similarly, sulfur contributes 28.1% (96/342 x 100) and aluminum contributes 15.8% to the total mass of aluminum sulfate.

    In this manner, what is the percent composition of aluminum nitrate?

    Percent composition by element

    Element Symbol Mass Percent Aluminium Al 12.668% Nitrogen N 19.728% Oxygen O 67.604%
    What is the atomic percentage composition of aluminum in an aluminosilicate?

    Percent composition by element

    Element Symbol Mass Percent Aluminium Al 52.925% Oxygen O 47.075%

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