Question

KNO2=KNO3=HNO3=Cu (NO3)2=NO2=

Answer 1

H2O2 + KNO2 = KNO3 + H2O

KNO3+HCl=HNO3+KCl

2 HNO3+ CuCl2=Cu (NO3)2 + 2 HCl

Cu (NO3)2 = 2 NO3 + CuO

2 Cu(NO3)2 = 2 CuO + 4 NO2 + O2

Answer 2

It appears that you have listed a series of chemical compounds and equations, but your statement is incomplete and lacks context. Each of these items represents different chemical compounds and their formulas, but without more information or a specific question, it's challenging to provide a meaningful response.

If you have a specific question about any of these compounds or if you need assistance with a chemistry-related topic, please provide more details so that I can help you better.