AnswerCorrectly AnswerCorrectly 21-05-2021 Chemistry contestada Which of the following reactions is correctly balanced? 3 Ca + 1 N2 → Ca3N2 O 2 P2 + 3 H2 → 2 PH3 O 2 HgBr → 1 Hg + 1 Br2 O 2 Sr + 102 — 1 sro