Agaseous mixture composed of 20% ch4, 30% c2h4, 35% c2h2, and 15% c2h20. what is the average molecular weight of the mixture? a) 20 b) 9.25 c) 25 d) 6.75

The correct answer is Option d.

Explanation:

We are given:

Mass percentage of = 20 %

So, mole fraction of = 0.2

Mass percentage of = 30 %

So, mole fraction of = 0.3

Mass percentage of = 35 %

So, mole fraction of = 0.35

Mass percentage of = 15 %

So, mole fraction of = 0.15

We know that:

Molar mass of = 16 g/mol

Molar mass of = 28 g/mol

Molar mass of = 26 g/mol

Molar mass of = 48 g/mol

To calculate the average molecular mass of the mixture, we use the equation:

where,

= mole fractions of i-th species

= molar masses of i-th species

= number of observations

Putting values in above equation:

Hence, the correct answer is Option d.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

jjj89t'ji; it hink the answer is your mom is not si