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Question

What is the formula mass for Sulfur dioxide?


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Solution

Formula Mass:

  • “The total of the atomic weights of the atoms in the empirical formula of a chemical is the formula mass (also known as formula weight).”

Sulfur dioxide:

  • Sulfur dioxide is also known as sulfurous acid anhydride, sulfurous anhydride, or sulfur oxide and has the chemical formula SO2.
  • Sulfur dioxide contains both sulfur (S) and oxygen (O).
  • The molecule sulfur dioxide (SO2) is made up of one sulfur atom and two oxygen atoms.

Formula Mass of Sulfur Dioxide

  • The molar mass of sulfur is 32.1gmol-1
  • The molar mass of oxygen is 16.0gmol-1

Formulamass=[1×32.1][2×16]

=32.1×32

=64.1gmol-1

Hence, the formula mass for sulfur dioxide is 64.1gmol-1.


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