Question

Estimate the number electrons and Protons in 250g
purewater
and also calculate the effective nuclear charge in this water
Sample ? (1.34 x 10^7)​

Answer 1

Answer:

Mass of water =250g

Molecular mass of water =18g

Number of molecules in 18g of water ==6.02×10

23

Number of moleucles in one cup of water =

18

250

×6.02×10

23

Each molecule fo water contains two hydrogen atoms and one oxygen atom, i.e., 10 electrons and 10 protons.

∴ Total positive charge present in one cup of water

=

18

250

×6.02×10

23

×10×1.6×10

−19

C=1.34×10

7

C