How many moles do 9.12x10^25 formula units of kcl represent

151.4 moles

Explanation:

Data Given:

Formula units of KCl = 9.12x10²⁵

no. of moles = ?

Solution

Formula used

             no. of moles = no. of particles / Avogadro's number

Where

Avogadro's number = 6.022 x 10²³

Put values in above equation

  no. of moles = 9.12x10²⁵ formula units / 6.022 x 10²³ (formula units/mol)

  no. of moles =  151.4 moles

So,

There are 151.4 moles is represent by 9.12x10²⁵ of KCl formula units

the answer is 75.0%.