How many molecules of carbon dioxide (CO2) are there in 69.56g of carbon dioxide?

9.52 x 10²³molecules

Explanation:

Given parameters:

Mass of carbon dioxide  = 69.59g

Unknown:

Number of molecules  = ?

Solution:

To solve this problem, we must understand:

      1 mole of a substance  contains 6.02 x 10²³ molecules

Now, first find the number of moles of carbon dioxide;

 Number of moles  =  

 Molar mass of carbon dioxide  = 12 + 2(32)  = 44g/mol

  Number of moles  =   = 1.58moles

So;

          1 mole of a substance  contains 6.02 x 10²³ molecules

       1.58moles of carbon dioxide will contain 1.58 x  6.02 x 10²³

                                                                 = 9.52 x 10²³molecules

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .