Question

How do you calculate the molecular mass of heavy water?

Answer 1

Hint: At least two molecules have a similar atomic number and distinctive mass numbers then they are called isotopes. Hydrogen has three isotopes, hydrogen, deuterium and tritium. They can be spoken to as follows.
\[Hydrogen{\text{ }}{ - ^1}{H_1},{\text{ }}Deuterium - {\;^2}{H_1},{\text{ }}and{\text{ }}tritium - {\;^3}{H_1}\] . They have the same nuclear number yet unique mass numbers.

Complete step by step answer:
The Chemical formula of heavy water is \[{D_2}O\]. Substantial water appears as though water, however is around \[10\% \]heavier. In substantial water there is deuterium rather than hydrogen, and keeping in mind that normal hydrogen has one proton in its nucleus , the deuterium has both one proton and one neutron. In this manner, it gets heavier. It was a result of the hydrogen gas that was delivered at Vemork.
In the inquiry it is given that the atomic mass of deuterium is\[\;2\] , and the nuclear mass of oxygen is \[16.\]. The atomic equation of heavy water is \[{D_2}O.\]
Heavy water contains two deuterium atoms and one oxygen particle.
The deuterium has one neutron and one proton in its nucleus.
Molecular mass of weighty water \[\left( {{\text{ }}{D_2}0} \right)\]
$
{ = \left( {2x{\text{ }}Atomic{\text{ }}mass{\text{ }}of{\text{ }}Deuterium{\text{ }} + {\text{ }}Atomic{\text{ }}mass{\text{ }}of{\text{ }}Oxygen} \right)} \\
{ = {\text{ }}\left( {2x{\text{ }}2} \right){\text{ }} + 16} \\
{ = 20} \\
{Weight{\text{ }}of{\text{ }}1{\text{ }}mole{\text{ }}of{\text{ }}{D_2}O{\text{ }} = Molecular{\text{ }}mass{\text{ }}of{\text{ }}{D_2}O{\text{ }} = {\text{ }}20{\text{ }}gm}
$
Subsequently the sub-atomic mass of heavy water \[ = {\text{ }}20.\]
Extra data:
Substantial water is utilized in atomic reactors and it is utilized in Nuclear magnetic Resonance (NMR) spectroscopy.
Heavy water is utilized in the arrangement of another isotope of hydrogen called tritium.
Substantial water is likewise called deuterium oxide.
Despite the fact that Deuterium is an isotope of hydrogen, Heavy water isn't valuable for drinking purposes.

Note: Nuclear mass is unique in relation to nuclear number. Nuclear number speaks to the quantity of electrons present in the particle and nuclear speaks to the quantity of protons and the quantity of neutrons present in the core of the particle.