Jessica has 12.7 moles of a compound for an experiment. How many particles of the compound does she have?

A. 2.11 * 1023

B. 4.74 * 1023

C. 7.65 * 1023

D. 4.74 * 1024

E. 7.65 * 1024

The number of particles that are in 12.7 moles of compound that Jessica had is 7.65 x10^24 particles of compound (answer E)

Calculation

The number of particles are calculated using the Avogadro's Principle constant.

that is according to Avogadro's 1 moles = 6.02 x10^23 particles

what about 12.7 moles of compound=? particles/

by use of cross multiplication

number of particles of compound = [12.7 moles x (6.02 x 10^23) ] / 1 mole = 7.65 x 10^24 particles of compound (answer E)

N. b moles and moles cancels each other