Question

A. A sample of pure water, whatever the
source always contains
............... by
mass of oxygen and 11.1 % by mass of
hydrogen.
a. 88.8 b. 18 c. 80 d. 16​

Answer 1

It's 88.8% of oxygen please follow me and mark it as brainliest as I had lost all my brainliest answers for not answering since 2 months