Question

помогите срочно с химией!!!!!!!!!!! пожалуйста!!!
k+HF=
Na+HBr=
Li+HF=
Ca+ H2 SO4=
Al+ Hf=
K2 0 + H Br=
CuO + HNO3=
NAOH + H Br=

Answer 1

2K+2HF=KF2+H2

2Na+2HBr=2NaBr+H2

2Li+2HF=2LiF+H2

Ca+2H2SO4=CaSO4+SO2+2H2O

2Al+6HF=2AlF3+3H2

K2O+2HBr=2KBr+H2O

CuO+2HNO3=Cu(NO3)2+H2O

NaOH+HBr=NaBr+H2O