tyronehouston07
tyronehouston07 tyronehouston07
  • 10-01-2019
  • Chemistry
contestada

What is the molecular formula of a compound if its emprical formula is NO2 and its molar mass is 138.02 g/mole

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znk
znk znk
  • 10-01-2019

Answer:

N₃O₆  

Step-by-step explanation:

Data:

EF = NO₂

MM = 138.02 g/mol

Calculations:

EF Mass = (14.01 + 32.00) u

EF Mass = 46.01 u

The molecular formula is an integral multiple of the empirical formula.

MF = (EF)ₙ

  n = MF Mass/EF Mass  

  n = 138.02 u/46.01 u  

  n = 3.000 ≈3

MF = (NO₂)₃

MF = N₃O₆

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