The molecular weight of Ammonia [NH_{3}] is 17.03074.

Ammonia [NH_{3}] is an inorganic compound of two elements: Nitrogen and Hydrogen. The molecular weight of Ammonia is 17.03074 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

**CALCULATION PROCEDURE: Ammonia [NH**_{3}] Molecular Weight Calculation

_{3}] Molecular Weight Calculation

**Step 1: Find out the chemical formula and determine constituent atoms and their number in an Ammonia molecule.**You will know different atoms and their number in an Ammonia molecule from the chemical formula. The chemical formula of Ammonia is NH

_{3}. From the chemical formula, you can find that one molecule of Ammonia consists of one Nitrogen (N) atom and three Hydrogen (H) atoms.

**Step 2: Find out the atomic weights of each atom (from the periodic table). **

Atomic weight of Nitrogen (N): 14.00674 (Ref: Jlab-ele007)

Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)

**Step 3: Calculate the total weight of each atom in an Ammonia molecule by multiplying its atomic weight by its number.**

Number of Nitrogen atoms in Ammonia: 1

Atomic weight of Nitrogen (N): 14.00674

Total weight of Nitrogen atoms in Ammonia: 14.00674 x 1 = 14.00674

Number of Hydrogen atoms in Ammonia: 3

Atomic weight of Hydrogen (H): 1.008

Total weight of Hydrogen atoms in Ammonia: 1.008 x 3 = 3.024

**Step 4: Calculate the molecular weight of Ammonia by adding up the total weight of all atoms.**

Molecular weight of Ammonia: 14.00674 (Nitrogen)+ 3.024 (Hydrogen) = 17.03074

So the molecular weight of Ammonia is 17.03074.

Ammonia [NH_{3}] Molecular Weight Calculation

Molecular weight of Ammonia [NH_{3}] | |||

Constituent atoms | Number of each atom | Atomic weight | Total weight |

Nitrogen (N) | 1 | 14.00674 | 14.00674 |

Hydrogen (H) | 3 | 1.008 | 3.024 |

Molecular weight of Ammonia [NH_{3}]: | 17.03074 |

## REFERENCES:

- Lanl-1: https://periodic.lanl.gov/1.shtml
- Jlab-ele007: https://education.jlab.org/itselemental/ele007.html