How many electrons are present in 4g methane?

Answer 1

Let us get number atoms of the constituent first.

4 grams CH4 (1 mole CH4/16.042 grams)(6.022 X 1023/1 mole CH4)

= 1.5 X 1023 atoms of methane

========================so,

Carbon is one to one in the molecular formula, so let's get the number of hydrogen atoms in this mass methane.

1.5 X 1023 atoms CH4 (4 mole H/1 mole CH4)

= 6 X 1023 atoms hydrogen

======================now, we proceed to find electrons

1.5 X 1023 atoms carbon * 6 electrons

= 9 X 1023 electrons carbon

--------------------------------------

6 X 1023 atoms hydrogen * 1 electron

= 6 X 1023 electrons hydrogen

--------------------------------------------added together

= 1.5 X 1024 electrons in 4 grams methane

-------------------------------------------------------------( call it 2 X 1024 electrons methane to be in line with significant figures )

Answer 2

To find the number of electrons in 4g of methane (CH4), you would first need to calculate the number of moles of methane present in 4g. Then, you would use Avogadro's number (6.022 x 10^23) to convert moles to number of molecules. Finally, since methane has 5 electrons in total (1 for each carbon atom and 4 for each hydrogen atom), you would multiply the number of molecules by 5 to find the total number of electrons.