To calculate the number of electrons present in 4.4 grams of CO2, we need to use the Avogadro's number and the molecular weight of CO2.

Avogadro's Number:
Avogadro's number is defined as the number of particles in one mole of a substance. It is equal to 6.022 x 10^23 particles/mole.

Molecular Weight of CO2:
The molecular weight of CO2 is calculated by adding the atomic weights of carbon and oxygen in one molecule of CO2.
Molecular Weight of CO2 = (12.01 x 1) + (16.00 x 2)
= 12.01 + 32.00
= 44.01 g/mol

Steps to Calculate the Number of Electrons:

Step 1: Calculate the number of moles of CO2 in 4.4 grams of CO2.
Number of moles = Mass/Molecular Weight
Number of moles = 4.4/44.01
Number of moles = 0.1 moles

Step 2: Calculate the number of particles (molecules) of CO2 in 0.1 moles of CO2.
Number of particles = Number of moles x Avogadro's Number
Number of particles = 0.1 x 6.022 x 10^23
Number of particles = 6.022 x 10^22 particles

Step 3: Calculate the total number of electrons in 6.022 x 10^22 molecules of CO2.
Each molecule of CO2 contains a total of 22 electrons (4 from carbon and 18 from two oxygen atoms).
Total number of electrons = Number of particles x Number of electrons per particle
Total number of electrons = 6.022 x 10^22 x 22
Total number of electrons = 1.325 x 10^24 electrons

Therefore, there are 1.325 x 10^24 electrons present in 4.4 grams of CO2.