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2015-11-10T10:52:07+05:30

This Is a Certified Answer

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1 mole of NA₂CO₃ contains = 3 moles of oxygen atom
we have 0.2 moles of NA₂CO₃ ,
so we will have = 3 * 0.2 
                           = 0.6 mole of O atoms
since 1 mole of O atoms = 6.022 * 10²³ atoms
therefore,
0.6 mole of O atoms = 0.6 * 6.022 * 10²³
                                  = 3.6132 * 10²³ O atoms
therefore in 0.2 moles of NA₂CO₃  
number of Oxygen atoms = 3.6132 * 10²³
 i hope that my answer will help u.................................^_^
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2015-11-10T10:58:46+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1 mole of Na2CO3 contains 3 moles of oxygen atoms means 18.066* 10 ^ 23 atoms
0.2 moles of na^2co^3 contains 3.6132 * 10^23 atoms.
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