Answer:
d is the right one. aaßriadjcjfjfjfdjfjf
It is a reaction between an element and a compound that results in a different element and compound
A. Ammonium = polyatomic ion
B. Oxygen = compound
C. Silver = element
D. Nitrate = polyatomic ion
E. Helium = element
F. Water = polyatomic ion
G. Nitrogen = element
H. Carbon dioxide = compound
Is there any more info lol
But from thinking I got A=DH^2*BC
