Question:

Heavy water has the formula D2O, and semi-deuterated water has the formula DHO, where D stands for deuterium. Using the data from the table, estimate the percentages of D2O and DHO present in natural water.

__Element,__

__Isotope__

__isotopic mass(u)__,

__Natural Abundance (%)__,

__Protons__,

__Neutrons__

Hydrogen, ^1H, 1.0078250321, 99.9850, 1, 0

Deuterium, ^2H, 2.0141017780, 0.0115, 1, 1

Find the %D20 in natural water AND %DHO in natural water

I have gotten 1.15 ×10^-4 and 2.30×10^-4 But these are incorrect. Please help. I try to calculate by multiplying the percent abundance