1. What is the unknown substance in the following balanced redox reaction? 4Ca + 10HNO3 → 4Ca(NO3)2 + X + 5H2O

2.Balance the following equations by using the oxidation number method:

S(s) + HNO3(conc) → SO2(g) + NO2(g) + H2O

Cu(s) + HNO3(dil) → Cu(NO3)2(aq) + NO(g) + H2O
мне нужно

svepielisz    3   20.11.2020 09:30    9