Question

how can I find total positive charge ???​

Answer 1

Mass of water= 250g

Molecular weight= 18g

No. Of moles of water= 250/18 = 13.888

No. Of moles in 250g = 13.888×6.022×10^23

=8.36×10^24

No. Of protons in one molecule of water = 10

Charge on one proton = 1.6×10^-19 C

Total +ve charge = 10×1.6×10^-19×8.36×10^24

=1.338×10^7 C (ans)...

so opt b is correct..

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