Determine the number of molecules present in 4.56 moles of nitrogen (n2).

To calculate the number of molecules, we can simply use this rule:

number of molecules = number of moles x Avogadro's number

In this problem, we have:

number of moles = 4.56 moles

Avogadro's number is a constant = 6.02 x 10^23

Substituting in the above equation, we can calculate the number of molecules as follows:

number of molecules = 4.56 x 6.02 x 10^23

= 2.74512 x 10^24 molecules