Calculate The Number Of Moles Of Sulfur Atoms Present In 2.01 G Of NaSO4?

NaSO4 is the chemical formula for sodium sulfate. There are one atom of sodium, one atom of sulfur and four atoms of oxygen. The molar mass of sodium sulfate is;

Molar mass of NaSO4 = mass of sodium + mass of sulfur + 4*molar mass of oxygen

Molar mass of NaSO4 = 22.989 + 32.065 + 4*15.999

Molar mass of NaSO4 = 119.05 grams

Mass of NaSO4 in the sample = 2.01 grams

Moles = mass in the given sample / molar mass

Moles = 2.01 grams / 119.05 grams

Moles = 0.017 moles

There are 0.017 moles of sulfur in 2.01 grams of NaSO4.