A. The percentage composition of Ba is 80.1%
B. The percentage composition of O is 18.7%
C. The percentage composition of H is 1.2%
How to determine percentage composition
The percentage composition of element in a compound can be obtained by using the following formula:
Percentage composition = (mass of element / mass of compound) × 100
A. Determination of percentage of Ba
•Mass of 1 mole of Ba(OH)₂ = 137 + 2(16 + 1) = 171 g
•Mass of Ba in Ba(OH)₂ = 137 g
•Percentage of Ba =?
Percentage composition = (mass of element / mass of compound) × 100
Percentage of Ba = (137 / 171) × 100
Percentage of Ba = 80.1%
B. Determination of the percentage of O
•Mass of 1 mole of Ba(OH)₂ = 171 g
•Mass of O in Ba(OH)₂ = 2O = 2 × 16 = 32 g
•Percentage of O =?
Percentage composition = (mass of element / mass of compound) × 100
Percentage of O = (32 / 171) × 100
Percentage of O = 18.7%
C. Determination of the percentage of H
•Percentage of Ba = 80.1%
•Percentage of O = 18.7%
•Percentage of H =?
Percentage of H = 100 – (Percentage of Ba + Percentage of O)
Percentage of H = 100 – (80.1 + 18.7)
Percentage of H = 100 – 98.8
Percentage of H = 1.2%
Learn more about percentage composition:
https://brainly.com/question/11617445
