Question

What is the ratio by massof combining elements in h2o,co2 and nh3 ?

Answer 1

Answer:

NH3 = atomic mass of N=14 

molecular mass of H = (1*3)=3

ratio of mass of NH3=     N:H3

                              = 14:3

one Nitrogen atom combines with three Hydrogen atoms and molecular weight of the compound formed is 17.

Formula of the compound formed in the given ratio and calulated molecular weight is NH₃ (ammonia).

Following equation shows the formation of ammonia molecule from Nitrogen and Hydrogen.

N₂ + 3H₂→2NH₃

Answer 2

Answer:

H2O - 1:8, CO2 - 3:8, NH3 - 14:3

Explanation:

Compound: H2O

combining elements: H,O

Ratio by mass:

atomic mass of H= 1u

atomic mass of O= 16u

Ratio: 1 X 2/16 =2/16=1/8=1:8

Compound: CO2

combining elements: C,O

Ratio by mass:

atomic mass of C= 12u

atomic mass of O= 16u

Ratio: 12/16 X 2= 12/32= 3/8 =3:8

Compound: NH3

combining elements: N,H

Ratio by mass:

atomic mass of N= 14u

atomic mass of H= 1u

Ratio: 14/1 X 3 =14/3=14:3