doubt

Question

The charge on 500cc of water due to protons will be. a)6.0* 10^27C b)2.67* 10^7C c)6*10^23 C d) 1.67*10^23C

Mani Gupta · Answer

Dear Aspirant thanks for asking your doubt in NEETSHALA . B is right Answer. Detailed answers given below 500 cc = 500 ml = 500 gm

so,

the number of moles of water = 500 / atomic weight = 500 / 18 = 27.78 moles.

thus, the number of molecules would be = number of moles X Avagadro's Number

or

the total number of molecules = 27.78 X 6.023 X 1023 = 1.67 X 1025

and each water molecule has 10 protons in it. thus total number of protons in 500 cc of water would be

= total number of molecules X 10

= 1.67 X 1026 protons

the total protonic charge = number of protons X protonic charge

Q = ne

Q = 1.67 X 1026 X 1.6 X 10-19 C

total charge due to protons in 500cc of water

Q = 2.67 X 107 C

we hope now you get this Answer. if you have any query you can Reply.

1 Answer