Question

no.of.electronsin 1.6 g of methane

Answer 1

1 mole of methane weighs 16.04 g. 1.6 g of methane, therefore is roughly 0.1 mole. A mole of any substance contains 6.023 X 10^23 molecules. So, 0.1 g of methane contains 6.008 x 10^22 molecules of methane. A methane molecule contains one carbon atom and four hydrogen atoms. Each carbon atom has 6 electrons and each hydrogen atom has one electron adding to a total of 10 electrons in the methane molecule. Thus, 6.008 X 10^22 molecules of methane would contain 6.008 x 10^23 electrons, apart from other matter such as protons and neutrons, of course.

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