I think this is it
Cd(HCO3)2---->CdCO3+H2O+CO2
Sorry if this is wrong
15 is b 16 is b and im working on 14
There are 5 layers. The Lithosphere, the Asthenosphere, the outer core, the inner core and the mantel.
The Avogadro number represents the number of units in one mole of a chemical substance.
So to find the mole number of a chemical element, you divide its atom number of the Avogadro number which Na = 6.02*10^23 approx.
So n=N/Na (n=mole number, N=number of atoms, Na=Avogadro number)
n=1.0*10^15/6.02*10^23
n=1.6 * 10^-9
So 1.0*10^15 atoms of Sodium represent 1.6*10^-9 mol.
Hope this Helps! :)