Calculate the percentage composition of carbon and oxygen in CO2. (Given atomuc masses: Carbon=12 and oxygen=16
Answers
Answer:
Explanation:
element no of atoms atomic mass
C 1 * 12 = 12
O 2 * 16 = 32
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44
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percentage composition=weight of carbon/total weight of compound*100
=12/44*100
=0.272*100
= 27.2%
percentage composition=weight of oxygen/total weight of compound*100
= 32/44*100
=0.727*100
=72.7%
Answer:
carbon dioxide= Co2
=mass of carbon+mass of oxygen×2
=12u+16u×2
=12u+32u
=44u
mass of oxygen= 16u×2=32u
percentage composition of oxygen in carbon dioxide is= mass of oxygen÷mass of carbon dioxide
=(32÷44)×100= 72.72%