Question

.How many electrons are in 0.4 C?

Answer 1

There are 2.5 x 10¹⁸ electrons in 0.4 C.

Step-by-step explanation:

The charge of one electron = 1.602 x 10⁻¹⁹ C

Therefore, the number of electrons in 0.4 C is calculated as follows;

1.602 x 10⁻¹⁹ C -------------> 1 electron

0.4 C --------------------------> x

x = (0.4 ) / (1.602 x 10⁻¹⁹)

x = 2.5 x 10¹⁸ electrons

Therefore, there are 2.5 x 10¹⁸ electrons in 0.4 C.