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(1). Sulphur trioxide
The formula of sulphur trioxide is SO3.
The elements present in this are- Sulphur and oxygen.
Molecular mass=SO3
= 32+3×16
=32+48
= 80
(2). Ammonia
The formula is NH3
The molecular mass =14+ 3
= 17
The elements presents present are Nitrogen and Hydrogen.
Explanation:
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