A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium car – McqOptions

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1.	A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the Ca 2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is ______?
A.	30.6
B.	69.4
C.	75
D.	25
Answer» D. 25

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