Which of the following has highest percentage of oxygen by mass? (1) h20 (2) co2 (3)caco3 (4) c2h5oh
Harshit Singh , 4 Years ago
Grade 12th pass
Organic Chemistry> Which of the following has highest percen...
2 AnswersPawan Prajapati
Last Activity: 4 Years ago
Answer:
caco3 has the highest percentage of oxygen by mass
Thanks
Krisha
Last Activity: 3 Years ago
CaCO3 has molecular weight 100g.
100g of CaCO3 contain (16*3) 80g of oxygen.
% by mass of oxygen= 80/100*100 =80%
In H2O, % by mass of oxygen=16/18*100
=88%
In CO2 ,% by mass of oxygen=32/44*100
=72%
In C2H5OH, % by mass of oxygen=16/46*100 =34%
H2O has higher % of oxygen by mass.
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