Question

Determine the number of carbon atoms in 0.500 grams of carbon dioxide, CO2.​

Answer 1

Explanation:

First you need to find relative molecular mass. You can calculate it using relative atomic mass of C and O So

MCO2=12+16×2

=44gmol−1

molecular mass of CO^2 is 44. Which mean 44 grams of CO2 contain Avogadro’s number of atoms. So,

44gmol−1=6.022×10^23mol−1 (Avogadro’s number)

442=6.0^22×102^32

22g=3.011×1023

So 22g of CO2 have 3.0^11×10^23 CO2 molecules.

Since one molecule has one carbon atom it also has 3.0^11×10^23 Carbon atoms

Answer 2

Answer:

First you need to find relative molecular mass. You can calculate it using relative atomic mass of C and O So

MCO2=12+16×2  

=44gmol−1  

molecular mass of  CO2  is 44. Which mean 44 grams of  CO2 contain Avogadro’s number of atoms. So,

44gmol−1=6.022×1023mol−1 (Avogadro’s number)

442=6.022×10232  

22g=3.011×1023  

So 22g of  CO2 have  3.011×1023   CO2 molecules.

Since one molecule has one carbon atom it also has  3.011×1023  Carbon atoms

Explanation:

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