Calculate the molecular mass of the following u. 1) NH3
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17 gms.
Step-by-step explanation: Each element in the periodic table has their own mass. This is the mass of a single atom of that element in grams. Now for this molecule of NH3, we have only one mole of NH3.
In this molecule of ammonia we have 3 atoms of hydrogen and one nitrogen atom which are in a ionic bond.
Now for molecular mass we have to combinedly consider atomic mass of nitrogen and hydrogen atoms.
Since there are 3 atoms for hydrogen and 1 nitrogen atoms.
Hence molecular mass, NH3= 14(atomic mass of nitrogen )+3*1(atomic mass of hydrogen) =17gms.
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