Final answer:
The number of moles of K2SO4 is calculated by dividing the number of formula units given, 5.0 x 10^24, by Avogadro's number, resulting in 8.302 moles of K2SO4.
Step-by-step explanation:
To calculate the number of moles from the given number of formula units of K2SO4, we need to use Avogadro's number, which is 6.022 \u00d7 1023 formula units per mole.
Knowing the number of formula units allows us to set up a ratio and find the moles.
The provided number of formula units is 5.0 \u00d7 1024 of K2SO4.
Using the formula:
Moles = (Number of formula units) / (Avogadro's number)
Moles = (5.0 \u00d7 1024 formula units) / (6.022 \u00d7 1023 formula units/mol)
Moles = 8.302 moles of K2SO4