Catineiyabarbiebel Catineiyabarbiebel

09-09-2016
Chemistry

contestada

a 143.1 g sample of a compound contains 53.4 g of carbon, 16.9 g of hydrogen, 43 g of nitrogen, and some amount of oxygen. what is the mass percent of oxygen in the compound?

Respuesta :

09-09-2016

mass of oxygen = 143,1g - (53,4g + 16,9g + 43g) = 29,8g

If 143,1g ------ is ------ 100%
so
29,8g ------- is ------ %O

%O = (29,8g*100%) / 143,1g = 20,82%

Answer Link

scosart02 scosart02

15-03-2019

mass of oxygen = 143,1g - (53,4g + 16,9g + 43g) = 29,8g

If 143,1g ------ is ------ 100%

so

29,8g ------- is ------ %O

%O = (29,8g*100%) / 143,1g = 20,82%

Answer Link

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