Расставить коэффициенты 1. al + o2 =al2o3 2. mg + n2 =mg3n2 3. k + br2 =kbr 4. zn + o2 =zno 5. s + f2 = sf6 6. ag2o = ag + o2 7. fe2o3 + h2= fe + h2o 8. al + br2 = albr3 9. h2 + o2 = h2o 10. zn + hbr = znbr2 + h2 11. fe + o2 =fe2o3 12. ca + n2 =ca3n2 13. na + cl2 =nacl 14. ba + o2 =bao 15. p + f2 = pf5 16. hgo = hg + o2 17. al2o3 + h2= al + h2o 18. b + br2 = bbr3 19. n2 + o2 = no 20. mg + hbr = mgbr2 + h2 закончить реакции 1. al + cl2 = 2. mg + p = 3. k + n2 = 4. na + s = 5. ca + n2 = 6. na + p = 7. p + br2 = 8. al + s =
