How many oxygen atoms are there in 27.0 g of sodium sulfate (Na₂SO₄)?

Name: How many oxygen atoms are there in 27.0 g of sodium sulfate (Na 2 SO 4 )?
Brand: Quizplus
Rating: 4.9 (56 reviews)

Question

Quizplus · Accepted Answer

The molar mass of Na₂SO₄ is 142.04 g/mol. 27.0 g of Na₂SO₄ is 0.19 mol. Each molecule of Na₂SO₄ contains 4 oxygen atoms, so 0.19 mol of Na₂SO₄ contains 0.76 mol of oxygen atoms. Using Avogadro's number (6.022 x 10²³), this equals 4.58 x 10²³ oxygen atoms.

How Many Oxygen Atoms Are There in 27