Question

H2so4 + zn = znso4 + H2
HNO3 + HCL = H2+CO2+NO

Answer 1

Answer:

Explanation:

Very simple !!

if you consider there are only two reactant  

as it shown  

Zn and H2So4  

hope it help you !

thanks

Answer 2

Answer:

1 one is balanced

2 one is also balanced

Explanation:

Zinc react with sulfuric acid to produce zinc sulfate and hydrogen. Sulfuric acid - diluted solution. Laboratory method receiving of hydrogen.