can you help me with this

Classify each reactant as a Brønsted-Lowry acid or base.

Part 1 of 2

Acid:

HCN(aq)+NH3(aq)=CN(aq)+NH4(aq)

(Choose one)

Base:

(Choose one)

Part 2 of 2

Acid:

Base:
(Choose one)

HCO3 (aq) + NH4(aq) -+ NH3 (aq) + H2CO3 (aq)

(Choose one)

Part 1 of 2:

Acid: HCN (aq)
Base: NH3 (aq)

Part 2 of 2:

Acid: HCO3- (aq)
Base: NH3 (aq)