What is the mass of a water molecule, $\mathrm { H } _ { 2 }$ O,in atomic mass units?
A)2 amu
B)3 amu
C)16 amu
D)18 amu

Question

Quizplus · Accepted Answer

The mass of a water molecule ($\mathrm{H}_2\mathrm{O}$) is the sum of the masses of 2 hydrogen atoms and 1 oxygen atom. The atomic mass of hydrogen is approximately 1 amu, and the atomic mass of oxygen is approximately 16 amu. Therefore, the total mass is $2 \times 1 + 16 = 18$ amu.

What Is the Mass of a Water Molecule H2\mathrm { H } _ { 2 }H2​

What Is the Mass of a Water Molecule $\mathrm { H } _ { 2 }$