Sulfur trioxide reacts with water to form sulfuric acid according to thefollowing reaction: SO3 + H2O
H2SO4
Given the atomic mass of hydrogen is 1 amu, the atomic mass of oxygen is 16 amu, and one
molecule of sulfuric acid has a mass a of 98 amu, what is the atomic mass of sulfur trioxide?
Options:
(A) -116 amu
(B) -80 amu
(C) -48 amu
(D) -32 amu
Given,
H2SO4 has mass 2`\times`1 + 1S + 4`\times`16 = 98
2 + 1S + 64 = 98
1S + 66 = 98
1S = 98-66 = 32
SO3 has mass 32+3`\times`16 = 80
or,
SO3 = H2SO4 - (H2O) = 98 - (2+16) = 80
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