Answers

2016-02-10T21:36:37+05:30
Na2CO3 has 6 atoms
the mass of Na2CO3 is 90u.
90u = 1 mole of Na2CO3.
Therefore Na2CO3 has 6 atoms.
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2016-02-11T08:51:19+05:30
Actually 1 mole of any substance (wheather compound or any element) contains 6.022 × 10^23 atoms or molecules
1 1 1