Question

calculate the mass of oxygen atoms in 0.1 mole of Caco3​

Answer 1

Answer:

NOW Here CaCO3 has molecular mass of

40+12+48=100 therefore oxygen contribution percentage is 48/100 i.e 48%

Now,

0.1 mole of CaCO3 has molecular mass of 10 g. So it contains 48%of 10 g of oxygen. i.e 4.8 g of oxygen..

No.of moles of oxygen =given mass/molar mass.

So n=4.8/16=0.3 i.e 0.3 moles of oxygen atom.

If u consider O2 molecule then no. Of moles will be halved and ans. Will be 0.15 moles of oxygen molecule..

Hope that you are statisfied

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