the number of electron in 8gm h2s are

Dear student,

The atomic mass of H is 1 and that of S is 32.
Therefore, the molar mass of H2S is 34.
The atomic number of H is 1 and that of S is 16.
Therefore, the total number of electrons in one molecule of H2S is 2+16=18.
Therefore, there are 18 moles of electron in 34 g of H2S.
Thus, the number of electrons in 8 g is,
18×834=4.235 mole=4.235×6.023×1023=2.55×1024 electrons
Regards

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