Question

how can you determine the molecular formula of this molecule? your empirical formula is n₂o₃. in this particular situation, you were told that the molecular weight of this compound is 152 amu. use this information to determine what the molecular formula of your unknown molecule is. before you determine how to change your empirical formula to represent the molecular formula, see how the empirical formula weight compares to the molecular weight. to do this, first calculate the empirical formula weight.. insert the subscripts to create the molecular formula for this substance. n o

Explanation:

Step1: Calculate empirical formula weight

The atomic weight of \(N\) is \(14\) amu and of \(O\) is \(16\) amu.
For \(N_2O_3\), empirical formula weight \(= (2\times14)+(3\times16)=28 + 48=76\) amu.

Step2: Find the multiple \(n\)

\(n=\frac{\text{molecular weight}}{\text{empirical formula weight}}=\frac{152}{76} = 2\)

Step3: Determine molecular formula

Multiply sub - scripts in empirical formula by \(n\).
For \(N_2O_3\), molecular formula is \(N_{2\times2}O_{3\times2}=N_4O_6\)

Answer:

\(N_4O_6\)