Question

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

Answer 1

Answer:

Number of moles is defined as the ratio of given mass in g to the molar mass.The mathematical expression is given as:

Number of moles  =Number of moles of compound  = 12.7 moles (given)As, 1 mole of any compound is equal to  particles.

where,    is Avogadro number. Formula for calculating particles is given by:

where, N =  number of particles, n = number of moles and  is Avogadro number.

Put the values,=  or  Hence, number of particles of the compound is equal to

Explanation:

Answer 2

Answer: $76.49\times 10^{23}$

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 Liters at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

1 mole of compound contains = $6.023\times 10^{23}$ particles

12.7 moles of compound contain = $\frac{6.023\times 10^{23}}{1}\times 12.7=76.49\times 10^{23}$ particles.