Question

atomic mass of oxygen​

Answer 1

16

Please

Thanks Answer Please

Please

Answer 2

$\huge\bf\underline\red{\underline{❛❛answer❜❜}}$

$\huge\bf\underline\purple {\underline{❛❛15.999u❜❜}}$

$\huge\bf\underline\blue{\underline{❛❛16❜❜}}$

15.999u and 16u both is your answer