What is NHCO3?

Answer 1

Nitric Acid is HNO3 !!

NHCO3 is NOT a chemical compound,

but I can imagine that you mistyped,

meaning either

• NaHCO3 which is Sodium-hydrogen-carbonate, or -bicarbonate (baking powder)

or

• (NH4)2CO3 which is Ammonium carbonate or (NH4)HCO3 Ammonium-bicarbonate

Answer 2

NHCO3 is not a well-known chemical compound. It appears to be a combination of ammonia (NH3) and carbon dioxide (CO2), but it is not a recognized or stable compound in chemistry. If you meant sodium bicarbonate (NaHCO3), also known as baking soda, it is a common leavening agent used in baking and as an antacid.