Question

Choose the most correct option.
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

A sample of pure water whatever that scores always contain 88.8 by mass of oxygen and 11.1 % by mass of hydrogen