What is the formula mass of ammonia?
![Atomic Atomic](https://media.cheggcdn.com/media%2Fb80%2Fb803295c-4f18-4156-b1aa-3398ac242fc8%2Fimage.png)
1 Answer
The formula of ammonia is
Break the formula up to see what atoms are present. By that, you know that Nitrogen and Hydrogen are present.
![Ammonia atomic mass unit Ammonia atomic mass unit](https://media.cheggcdn.com/study/09e/09e3deff-bc2e-4b86-b07a-ef7445007958/image.png)
If you look into the periodic table, you can see that the formula mass (or a.k.a molar mass) of Nitrogen is 14.0 g/mol and Hydrogen 1.0 g/mol.
The molar mass of ammonia equals 17.04 g/mol. (c) The sum of the atomic masses for Mg(NO 3) 2 is 24.31 amu + 2(14.01 + 16.00 + 16.00 + 16.00)amu = 148.33 amu. The molar mass of magnesium nitrate equals 148.33 g/mol. Calculate the molar mass for each of the following substances: (a) silver metal, Ag (b) ammonia gas, NH. 3 (c) magnesium. Formula of ammonia= NH3 Molecular mass of ammonia= atomic mass of nitrogen (N)+ 3( atomic mass of hydrogen) Atomic mass of nitrogen and hydrogen is 14& 1 Molecular mass of ammonia= 14+3×1 =17.
Since there are 3 Hydrogen atoms present, the formula mass of H is 1.0
![Atomic mass of nh3 Atomic mass of nh3](https://d2vlcm61l7u1fs.cloudfront.net/media%2F4b2%2F4b2e07e0-e65e-4f07-8373-bd8c9b010c06%2FphpuJT6I7.png)
Therefore, by adding them up, the formula mass of ammonia is:
[14.0 g/mol + 3.0 g/mol] = 17.0 g/mol.
Atomic Mass Of Chlorine 37
Periodic table source: Level 2 Chemistry SciPad (NZ syllabus)
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![Atomic Atomic](https://www.onlinemathlearning.com/image-files/isotopes-relative-atomic-mass.png)
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