Question

You have a container filled with 12 moles of neutral lithium. How much negative electric charge is contained in the electrons of all the lithium atoms in the container

Answer 1

3469248 C

Step-by-step explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by
`N_0`.

Avogadro constant:-

`N_a=6.023* 10^(23)`

Thus, number of atoms of lithium in 12 moles =
`12* 6.023* 10^(23)`

Also, 1 atom of lithium has 3 electrons.

So, number of electrons in 12 moles of lithium atoms =
`3* 12* 6.023* 10^(23)`

Charge on 1 electron =
`1.6* 10^(-19)C`

So,

Total negative charge =
`3* 12* 6.023* 10^(23)* 1.6* 10^(-19)\ C` = 3469248 C