Question

SO3 + H2O -> H2SO4
given the atomic mass of hydrogen is 1amu, the atomic mass of oxygen is 16 amu, and one molecule of sulfuric acid has a mass of 98 amu, what is the atomic mass of sulfur trioxide?
A. 80 amu
B. 48 amu
C. 32 amu
D. 116 amu

Answer 1

To calculate the atomic mass of sulfur trioxide (SO3), we need to sum up the atomic masses of sulfur and 3 oxygen atoms.

Sulfur (S) atomic mass = 32 amu
Oxygen (O) atomic mass = 16 amu

SO3 atomic mass = (1*S) + (3*O)
SO3 atomic mass = 32 + (3*16)
SO3 atomic mass = 32 + 48
SO3 atomic mass = 80 amu

Therefore, the atomic mass of sulfur trioxide (SO3) is 80 amu.

A. 80 amu