select the correct answer. jessica has 12.7 moles of a compound for an experiment. how many particles of the…

select the correct answer. 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

select the correct answer. 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

Explanation:

Step1: Recall Avogadro's number

Avogadro's number ($N_A$) is $6.022\times 10^{23}$ particles per mole.

Step2: Calculate the number of particles

The number of particles $N$ is given by the formula $N = n\times N_A$, where $n = 12.7$ moles. So $N=12.7\times6.022\times 10^{23}$. $12.7\times6.022 = 76.4794$. So $N = 76.4794\times 10^{23}=7.64794\times 10^{24}\approx7.65\times 10^{24}$.

Answer:

E. $7.65\times 10^{24}$