So to find a base by its formula, does it end in coo or cooh? can a base be both of those endings?

To find a base by its formula, does it end in COO-

A base never ens with COOH

Explanation:

According to Bronsted Acid - Base theory : When an acid and base reacts with each other , the acid form its conjugate base and base will form its conjugate acid because of exchange of proton .

If HA = acid and B = base react each other then they generate their conjugate Base (A-) and acid (HB+) respectively .

The equation is represented as :

Here A- is conjugate base of HA acid

HB+ is conjugate acid of base B

COOH group is the carboxylic acid group = acid

Suppose A carboxylic acid RCOOH is added in water(H2O)

Here

RCOOH = Acid and its conjugate -base is RCOO-

Hence A Base end with formula COO-

COOH is always acid

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current