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−

Explanation:

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

here we have

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

so we have

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

massxgravity x heght=weightxheight= pe

4900=490xh

h=10