Happy 😊

This page lists questions and answers that were posted by visitors named Happy 😊.

Questions

The following questions were asked by visitors named Happy 😊.

Answers

The following answers were posted by visitors named Happy 😊.

H=1×1 N=14×1 O=3×16 1+14+48=63 %mass of oxygen=16÷63×100=25.39 ~25.4%
3 years ago