Answer:
64 u
Step-by-step explanation:
There are two elements present in the chemical compound SO2, or commonly referred to a Sulfur Dioxide.
These elements are Sulfur and Oxygen (2 atoms of Oxygen and 1 atom of Sulfur).
Sulfur is a non-metallic element that exists in several forms, the ordinary one being a yellow rhombic crystalline solid, and that burns with a blue flame and a suffocating odor: used especially in making gunpowder and matches, in medicine, in vulcanizing rubber, etc. Symbol: S; atomic weight: 32.064; atomic number: 16; specific gravity: 2.07 at 20°C.
Oxygen is a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. It is the supporter of combustion in the air and was the standard of atomic, combining, and molecular weights until 1961.
The sum of the masses of the atoms in a substance's molecules is known as its molecular mass. The atomic masses of each atom in the molecule are added together to compute it.
Sulphur dioxide (SO2) is made up of one sulphur (S) and two oxygen (O) atoms. So, the molecular mass of SO2 = atomic mass of S + (2 × atomic mass of O) = 32 + (2 ×16) = 64 u
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