Question

calculate the number of atoms in 0.20 mole molecules of O2​

Answer 1

Answer:

0.20 mole molecules of oxygen =6.022×10²³×0.20=1.205×10²³ molecules.

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Answer 2

Explanation:

Number of atom in 0.20 mole O2 is

number of atom in one molecule of O2*0.20*avogadro number

= 2*0.20*6.02*10^23

=2.408*10^23 atoms

Number of atoms of carbon and oxygen in 1.5 mole CO2 is

number of atom in one molecule of CO2*1.5*avogadro number

=3*1.5*6.02*10^23

=2.709/10^24 atoms.

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