FJ$12$

$2.4$Cu $($k$)+$ O$2($g$)=2$Cu$20$; CpCu $($k$)=22,+6$ x$10-3/$k $(2980-1356$K$)($k$)=62+23$x$10-3/$K $(2980-1200$K$)()=30+4$x$10-3($J$/$mol$$K$)(2980-3000$K$)$: $)$ AH$$ AS$298)$ AH$$ AS $$ AG $600$K $$