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Answer:
Total no of moles × total no of electons in 1 mole × avagadro’s no .
Molecular weight of methane (CH4) is 16g.
Total No of moles in 32g of methane is=given mass/molar mass
32/16=2
1 mole of CH4 contains 1 c atom(6 electrons) and 4 hydrogen(1×4 electrons) .hence , total 10 electrons in 1 mole of methane.
2 × 10 × 6.022 × 10^23 = 120.44 × 10^23
hence, your answer is (d) 1.2044 x 10^23
Explanation: