Find out total number of electrons present in 1.6 g methane?

Step-by-step solution

The molar mass of methane, CH₄ , is 12 g/mol + 4 1 g/mol = 16 g/mol . Given mass is 1.6 g , so the number of moles is 1.6 16 = 0.1 mol . Using Avogadro's number, N_ A = 6.022 10²³ mol⁻¹ , the number of molecules is 0.1 6.022 10²³ = 6.022 10²² . Each CH₄ molecule contains 6 + 4 1 = 10 electrons. The total number of electrons is 6.022 10²² 10 = 6.022 10²³ . Final Answer: A