Determine the number of molecules contained in 1 mole of sodium sulfate.

A. 1.204 x 10^24 ions

B. 1.807 x 10^24 ions

C. 2.007 x 10^23 ions

D. 6.022 x 10^23 ions

Answer: 1.204 x 10^24 sodium ions

Explanation: First look a the compound sodium sulfate: Na2SO4

1 mol of compound contains 2 mol sodium ions

Second remember 1 mole is always 1 mol=6.022 x 10^23 ions

(2 mols) * (6.022 x 10^23 ions/mol)

= 1.204 x 10^24 sodium ions

Option D. 6.022 x 10^23 ions

Explanation:

1 mole of a substance contains 6.02x10^23 atoms, molecules or ions from Avogadro's hypothesis.

Therefore, 1 mole of sodium sulfate will also contain 6.02x10^23 atoms, molecules or ions