Question

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

Answer 1

76.5 x 10^24

Step-by-step explanation:

This is correct :)

Answer 2

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