Question

al+hno3=al(no3)3+h2o+no2
балан

Answer 1

$\left \{ {{Alк-3e^- \ \to \ Al^{+3} \atop {N^{+5} +1e^- \ \to \ N^{+4}}}$
Al+6HNO3${ \to$ Al(NO3)3+3NO2+3H2O