Answer:
27.29 % of CO2 is carbon.
Explanation:
Not every element has the same molar mass, so they are present in a different %
<u>Step 1:</u> Calculating the molar mass of CO2
⇒CO2 has 1 carbon atom and 2 oxygen atoms
⇒ Molar mass of C= 12.01g/mole
⇒Molar mass of O = 16g/mole
⇒Molar mass of CO2 = 12.01 + 2*16g/mole = 44.01g /mole
<u>Step 2: </u>find the percentage of Carbon
To find the percentage of carbon, we will calculate the ratio Molar mass Carbon / Molar mass CO2
⇒ (12.01 / 44.01) * 100 % = 0.2729 * 100 % = 27.29 %
27.29 % of CO2 is carbon. This means that 72.71 % of CO2 is oxygen ( 100 - 27.29 = 72.71)