Question

balance CuS(s)+ HNO3(aq) ‐> Cu+2(aq) +   SO4‐2(aq) + NO

Answer 1

Cu + 2 what's that?

Answer 2

its oxidation state and so4 -2 is its oxidation state

Answer 3

It should be written \(Cu^{2+}\) ; it is the copper(II) ion.

\(SO_4^{2-}\) is the sulfate ion.

Answer 4

yup exactly

Answer 5

CuS(s)+ HNO3(aq) ‐> Cu^2+(aq) + SO4^2-(aq) + NO