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What will be final weight of 286 gm Na2CO3 .10H2O by Heating at 373 K ?

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What will be final weight of 286 gm Na2CO3 .10H2O by Heating at 373 K ? 

(a)  206 gm 

(b)  162 gm

(c)  186 gm

(d)  124 gm 

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Correct option (d) 124 gm 

Explanation:

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