Question

What is the fraction of the mass of water due to neutrons?

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Answer

Mass of one mole (Avogadro Number) of neutrons ~ 1 g

Mass of the one neutrons =(1 /ย ๐ด๐‘ฃ๐‘œ๐‘”๐‘Ž๐‘‘๐‘Ÿ๐‘œ ๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ (๐‘๐ด)) g

Mass of 8 molecule of water = ๐‘€๐‘œ๐‘™๐‘Ž๐‘Ÿ ๐‘š๐‘Ž๐‘ ๐‘  / ๐‘๐ด

= 18 / ๐‘๐ดย  ย  g

There are 8 neutrons of water = 18 / ๐‘๐ด

Mass of one molecule of water = ๐‘€๐‘œ๐‘™๐‘Ž๐‘Ÿ ๐‘š๐‘Ž๐‘ ๐‘  / ๐‘๐ด

= 18 / ๐‘๐ดย  ย g

Fraction off mass of the water due to neutrons ~ 8 / 18

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