Explanation:
The number of moles of a substance is represented by the following formula:
n=NNA
where, n
is the number of moles of the substance, N
is the total number of molecules present in a substance, andNA
is the Avogadro constant.
The given compound is N2O5
So one mole of N2O5
contains 6.023×1023
numbers of molecules. Thus the 0.400
moles of N2O5
contains a number of molecules => 0.400moles×6.023×10^23
.
=> 2.41×10^23 molecules.
