Question

Calculate the no. of atoms of C,h,o is 72.5g of isopropanol molar mass 60

Answer 1

Explanation:

Chemical Formulae of Iso-Propanol = $C_{3} H_{8} O$

Molecular Mass of Iso-Propanol = 3 x 12 + 1 x 8 + 16

                                                     =36+8+16

                                                     =60

In this question, Weight is being related to the Number of Atoms.

6.023 x $10^{23}$             60

            'x'                                      72.5

60 grams of Iso-Propanol contains 6.023 x $10^{23}$ atoms

72.5 grams of Iso-Propanol contains 'x' atoms

Therefore,

x = $\frac{6.023 * 10^{23} * 72.5}{60}$

x = $6.023 * 10^{23}*1.20$ Atoms

Hence,

72.5 grams of Iso-Propanol contains $6.023 * 10^{23}*1.20$ Atoms