What is the molecular mass of SO4?

Understand the Problem

The question is asking for the molecular mass of the sulfate ion (SO4), which requires knowing the atomic masses of sulfur and oxygen and calculating the total mass based on their quantities in the formula.

96.07 amu

The molecular mass of the sulfate ion is 96.07 amu

Steps to Solve

1. Find the atomic masses of sulfur and oxygen

The atomic mass of sulfur is approximately 32.07 atomic mass units (amu), and the atomic mass of oxygen is approximately 16.00 amu.

1. Identify the number of each type of atom in the sulfate ion (SO extsubscript{4})

In the sulfate ion (SO extsubscript{4}), there is 1 sulfur atom and 4 oxygen atoms.

1. Calculate the total mass of sulfur atoms

Multiply the atomic mass of sulfur by the number of sulfur atoms: $$ext{mass of sulfur} = 1 imes 32.07 ext{ amu} = 32.07 ext{ amu}$$

1. Calculate the total mass of oxygen atoms

Multiply the atomic mass of oxygen by the number of oxygen atoms: $$ext{mass of oxygen} = 4 imes 16.00 ext{ amu} = 64.00 ext{ amu}$$

1. Add the masses of sulfur and oxygen to find the molecular mass of the sulfate ion

Add the total mass of sulfur and the total mass of oxygen: $$ext{molecular mass of SO}_4 = 32.07 ext{ amu} + 64.00 ext{ amu} = 96.07 ext{ amu}$$

The molecular mass of the sulfate ion is 96.07 amu