An unknown compound contains only C , H , and O . Combustion of 5.80 g of this compound produced 14.2 g CO 2 and 5.80 g H 2 O . What is the empirical formula of the unknown compound

Empirical formula is C₄H₈O

Explanation:

Empirical formula:

It is the simplest formula gives the ratio of atoms of different elements in small whole number

Given data:

Mass of compound = 5.80 g

Mass of CO₂ = 14.2 g

Mass of water = 5.80 g

Empirical formula = ?

Solution:

Percentage of H = 5.80 / 5.80× 2/18 ×100= 11%

Percentage of C = 14.2 /5.8 ×12/44 × 100= 67%

Percentage of O = 100 -( 67+11) = 22%

Number of gram atoms:

Number of gram atoms of H = 11 / 1 = 11

Number of gram atoms of O = 22 / 16 = 1.4

Number of gram atoms of C = 67 / 12 = 5.6

Atomic ratio:

            C                      :      H            :         O

           5.6/1.4              :     11/1.4        :       1.4/1.4

              4                   :       8          :        1

C : H : O = 4 : 8 : 1

Empirical formula is C₄H₈O.

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.

your mom.com . : 0000