Q.
The number of oxygen atoms present in 50g of calcium carbonate is
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a
6.023×1023
b
30.1×1023
c
9.035×1023
d
1.206×1024
answer is C.
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Detailed Solution
1 mole of CaCO3 = 100g100g of CaCO3 contains 3grams atoms of 'O'100g of CaCO3 contains 3NA atoms of 'O'50g of CaCO3 contains 'X' atoms of 'O'
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