Answer:
1.610 x 10^25 particles
Step-by-step explanation:
To calculate the number of particles in 26.75 moles of potassium oxide, we can use Avogadro's number, which relates the number of particles in a substance to its number of moles.
Avogadro's number is approximately 6.022 x 10^23 particles per mole. Therefore, we can calculate the number of particles in 26.75 moles of potassium oxide as:
26.75 moles x 6.022 x 10^23 particles/mole = 1.610 x 10^25 particles
Therefore, there are approximately 1.610 x 10^25 particles of potassium oxide in 26.75 moles of the substance.