Question

Find the percentage composition of each element in the compound having 9.8 grams of nitrogen,0.7 grams of hydrogen and 33.6 grams of oxygen

Answer 1

Answer: The percentage composition of nitrogen , hydrogen and oxygen is 22.2 % , 1.59 % and 76.2% respectively.

Step-by-step explanation:

Percentage composition is defined as the ratio of mass of substance to the total mass in terms of percentage.

Percentage composition=
`\frac{\text {mass of the element}}{\text {Total mass of the substance}}* 100\%`

a)
`{\text {percentage composition of nitrogen}}=\frac{\text {mass of nitrogen}}{\text {Total mass}}* 100\%`

`{\text {percentage composition of nitrogen}}=(9.8g)/(9.8+0.7+33.6)* 100\%=22.2\%`

b)
`{\text {percentage composition of hydrogen}}=\frac{\text {mass of hydrogen}}{\text {Total mass}}* 100\%`

`{\text {percentage composition of hydrogen}}=(0.7)/(9.8+0.7+33.6)* 100\%=1.59\%`

c)
`{\text {percentage composition of oxygen}}=\frac{\text {mass of oxygen}}{\text {Total mass}}* 100\%`

`{\text {percentage composition of oxygen}}=(33.6)/(9.8+0.7+33.6)* 100\%=76.2\%`

The percentage composition of nitrogen , hydrogen and oxygen is 22.2 % , 1.59 % and 76.2% respectively.