What is a mass fraction of neutrons in a water molecule?

4/9

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

1/3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

8/9

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2/3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 4/9
Mass of one neutron is $1$ amu.
Mass of one water molecule is $18$ amu.
Oxygen atom contains $8$ neutrons and hydrogen atom contains no neutrons.
So the mass of neutrons in one water molecule is $8 a m u$ .
Fraction of mass of water due to neutrons is $\frac{8}{18} = \frac{4}{9}$

Suggest Corrections

Similar questions

_{92} U^{235}

_{54} {X e}^{139}

_{38} {S r}^{94}

X

X

{_{92} U}^{235}

{_{54}^{92} X e}^{139}, {_{38} S r}^{94}

X

_{54}^{139} X e

_{38}^{94} S r

_{92}^{235} U

_{92} U^{235}

_{54} X e^{139},_{38} S r^{94}

x

Join BYJU'S Learning Program