Question

What mass of electrons would be required to just neutralize the charge of 5.0 g of protons? (the mass of a proton is 1.67262×10−24g, and the mass of an electron is 9.1×10−28g.)?

Answer 1

To neutralize the charge of 1.0g of electrons?

Answer 2

`m = 2.72 * 10^(-3) g`

Step-by-step explanation:

total number of protons in 5 gram of total mass is given as

`N = (m)/(m_p)`

here we have

`N = (5)/(1.67262 * 10^(-24))`

`N = 2.99 * 10^(24)`

now to neutralize the charge we require same amount of negatively charge electrons

so we have

`m = N(m_e)`

`m = (2.99 * 10^(24))(9.1 * 10^(-28))`

`m = 2.72 * 10^(-3) g`