Final answer:
There are roughly 9.635 x 10²³ molecules of sulfur dioxide in 1.6 moles of this substance, calculated by using Avogadro's number (6.022 x 10²³ molecules per mole).
Step-by-step explanation:
To determine how many molecules of sulfur dioxide (SO₂) are present in 1.6 moles of sulfur dioxide, we use Avogadro's number, which states that there are approximately 6.022 x 10²³ molecules in one mole of any substance.
By multiplying the number of moles by Avogadro's number, we can find the quantity of molecules:
1.6 moles SO₂ x 6.022 x 10²³ molecules/mol = 9.635 x 10²³ molecules of SO₂.
Therefore, there are roughly 9.635 x 10²³ sulfur dioxide molecules in 1.6 moles of sulfur dioxide.