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A covalent compound contains 2 atoms of nitrogen and 4 atoms of oxygen. What is the percent by mass
composition of nitrogen?

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Respuesta :

skooliswack
Do you have the molecular weight? I’ve never done this type of chemistry before but from researching it the equation is nxAx100/M. n=# of atoms, A=atomic mass, & M=molecule weight. Sorry if this isn’t helpful, if you can give me an example I may be able to help.

The percent by mass composition of nitrogen:

Given information :

  • Nitrogen- 2 atoms
  • Oxygen-4 atoms
  • Mass of oxygen-16
  • Mass of nitrogen -14

Solution :

Total mass = Nitrogen + Oxygen

  • Total mass= 2*14+4*16
  • Total mass= 92

Percent mass composition of nitrogen =mass of nitrogen*2/ total mass*100

  • Percent mass composition of nitrogen=28/92*100
  • Percent mass composition of nitrogen=30*.4

The percent by mass composition of nitrogen is 30.4.

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