Calculate the total number of electrons in 3.2 gram of oxygen gas
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Molar mass of O2 = 32g
No of moles in 3.2 g O2 =
3.2
32
= 0.1 mol
No of oxygen molecules = 0.1
×
6.022×
1023
No of electrons in one molecule of O2 = 8
×
2=16
No of electrons in 0.1
×
6.022
×
1023 molecules = 0.1
×6.022×1023
×
16 = 9.6352
×
1023 electrons
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