This is a difficult question to answer, but we can make an educated guess.
So that means there are about 1 million ammonia molecules in this sample!
The sample has a mass of 82.98 g, so the number of ammonia molecules is slightly less than one million.
Because not every particle in this sample is an ammonia molecule.
But there are still at least 800 00!
That means that for most chemical purposes we could assume that our answer to “How many molecules?”
Was about 780 00 and NOT ONE MILLION !!
Hopefully, you now have a clearer understanding of how many molecules are in each gram of ammonia-based on an approximation calculated from average values.
And when using its molecular weight as your reference point instead.
There should be around 770 00 – 850 00 NH₃HCl (ammonia + hydrochloric acid) particles per gram.