Calculate the number of oxygen atoms in 0.10 mole of Na2 Co3 . 10H2 o
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Solution
Oxygen has molar mass of 16. Oxygen amount in Na2CO3.10H2O is 10 O+ 3 O 13 Oxygen atoms. 13*16= 208. So 1 Mole of Na2CO3.10H2O has 208 gms of oxygen atoms. But 0.1 Mole has 20.8 gms of oxygen.