Răspunsuri

2014-10-16T17:40:55+03:00
H2s+2naoh=2na2s+h2o     100de procente cai drep
2014-10-16T17:41:43+03:00
Este o ecuatie chimica, nu o fractie.
  H2S+2NaOH=Na2S+2H2O