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| 1. |
Calculate the total number of electrons present in 100gm of water. Also find the total charge |
| Answer» we know that 1 molecule of water have (1*2+8=10) electrons.no. of water molecules in 18gm of water is equal to avogadro number ie., 6.022*1023\xa0H2O molecules.100gm = 100*6.022*1023\xa0/ 18we got no of molecules in 100 gm is 100*6.022*1023/ 18 H2O molecules.thus number of electrons in 100gm of water ie., 100*6.022*1023/18 H2O molecules is = 100*6.022*1023*10/18 = 334.55*1023\xa0electronscharge on each electron is -1.9*10-19\xa0coulombtotal charge = 334.55*1023*(-1.9*10-19);total charge = 635.65*104 Coulomb. | |