The Total Molecules Present In Water of ...Grams
In how many grams of water are molecules present?
Detail and information: The atomic mass numbers of Hydrogen and Oxygen are and respectively.
The answer is 18.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
The molecularity is the molecules present in the solution or any state.
To find the molecules present in water. H 2 O is molecular formula of water. Constituent atoms are two hydrogens and one oxygen ,
M o l e c u l a r W e i g h t = 2 × ( A t o m i c M a s s N u m b e r O f H y d r o g e n ) + 1 × ( A t o m i c M a s s N u m b e r O f O x y g e n )
= 2 × ( 1 ) + 1 × ( 1 6 ) = 2 + 1 6 = 1 8
so,the 1 8 grams of water contain 6 . 0 2 2 × 1 0 2 3 molecules.
One concept about to find its molecularity is avogadros number is directly proportional to its atomic weight...