Answer:
The empirical formula for the compound is :
or , NHO3
Explanation:
Empirical formula : It is the simplest ratio of atoms present in a compound.
<u>Calculate number of moles of H , N and O using formula :</u>
Avogadro number is represented by N0 and contain =
atoms
<u><em>1.Calculate number of moles of O</em></u>
Number of Atoms =
Insert value in :
O = 11.95 mole = 12.0 mole
(11.95 is almost equal to 12 )
<u><em>2.Calculate number of moles of N</em></u>
Given mass = 56 .0 g
Molar mass of N = 14 g/mol
N = 4.0 mole
<u><em>3.Calculate number of moles of H </em></u>
Already given in moles
H = 4.0 moles
<u><em>3.Calculate Simple ratio : Divide the moles of each H ,O ,N by the 4.0 mole ( It is the smallest number)</em></u>
Ratios Are :
O = 3
N = 1
H = 1
So the empirical formula should be :
or
NHO3