53.11× 1023 molecules
Step-by-step explanation:
Given data:
Number of molecules of CO2 =?
Mass of CO2 = 388.1 g
Solution:
Formula:
Number of moles = mass/ molar mass
Molar mass of CO2 = 12× 1 + 16×2
Molar mass of CO2 = 44 g/mol
Now we will put the values in formula.
Number of moles = 388.1 g/ 44 g/mol
Number of moles = 8.82 moles
Now we will calculate the number of molecules by using Avogadro number.
It is the number of atoms, ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 1023 is called Avogadro number.
The number 6.022 × 1023 is called Avogadro number.
1 mole = 6.022 × 1023 molecules
8.82 mol × 6.022 × 1023 molecules / 1 mol
53.11× 1023 molecules