A4.647 g of white solid contain only c, h and o is completely burned with excess of oxygen to produce 8.635 g of co2 and 1.767 g of h2o. what is empirical formula of the compound?

EMPIRICAL FORMULA:

C₂H₃O₂

Explanation:

Mass of compound = 4.647 g

Mass of CO₂ = 8.635 g

Mass of H₂O = 1.767 g

Empirical formula = ?

Solution:

Percentage of C = 8.635/ 4.647 × 12/44 ×100

Percentage of C = 1.86× 12/44 ×100 = 50.7

Percentage of H = 1.767/4.647 × 2/ 18 × 100

Percentage of H = 0.38 × 2/ 18 × 100

Percentage of H = 4.18

Percentage of O = 100 - (50.7+4.18)

Percentage of O = 100 - 54.88

Percentage of O = 45.12

Number of grams atom:

Number of grams atom of C = 50.7/ 12 = 4.23

Number of grams atom of H = 4.18 /1 = 4.18

Number of grams atom of O = 45.12/ 16 = 2.82

Atomic ratio:

            C            :          H                :            O

     4.23/2.82     :         4.18/2.82    :            2.82/2.82

         1                :              1.5          :                1

C :  H  :  O    (1 : 1.5 : 1)

C :  H  :  O    2(1 : 1.5 : 1)

C :  H  :  O    (2 : 3 : 2)

EMPIRICAL FORMULA:

C₂H₃O₂

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 .

it's all four options.