Answer:
1. C(2)+H2(1) -> C2H6(1)
2. NH3(2)+O2(3)-> HCN(2)+H2O(3)
I am not sure about the second one.
2
Explanation:
Pb(NO3)2 + 2NaI 2NaNO3 + PbI2
I believe its True
Refer to the pictures.