Question

the number of water molecules is maximum in
options
1.8g of H2O
18g of H20
18 moles of H20
18 molecules of H20

Answer 1

18 molecules of h20....

Answer 2

number of moles=given gram ÷ molecular mass

molar mass of water= 18 gram

option a
moles= 1.8÷18=0.1
so molecule= moles ×avogadro number
= 0.1×6.022×10^23
= 6.022×10^22

option b
moles=given gram÷ molar mass
= 18÷18=1
number of molecules=1×6.022×10^23
=6.022×10^23

option c
number of molecules= moles× avogadro number= 18×6.022×10^23=108.396×10^23

option d
18 molecules of water

so while comparing a,b,c and d
option c has more molecules......

i hope this will help you.......