Question

Calculate the no.of o atoms in 0.2 moles of Na2 co3 into 10H2o

Answer 1

1 mol of Na2CO3.10H2O contains 10+3 = 13 mole O atoms f(rom the formula)


we have  0.2 moles  of Na2CO3.10H2O  

So, we will have 13 x 0.2 = 2.6 mol O atoms

Since, 1 mole O atoms = 6.022 x  1023 atoms
2.6 mol O atoms = 2.6  x 6.022 x 1023 = 1.57  x 1024 O atoms.