I need help with this practice. use E=MC^2 Please!!!?
- 1 month ago
For question 4,
I'm not sure if you can use E=Mc^2 here, but here's my approach.
To find mass defect you subtract the mass of the protons and neutrons to the nuclear mass
The nuclear mass of Cobalt is 59.9338 (as given)
In Cobalt, there is
So the mass of the protons and neutrons =
27 x 1.00728 = 27.19656u
32 x 1.00867 = 32.27744u
27.19656 + 32.27744 = 59.474u
59.9338 - 59.474 = 0.4598u
Thus, 0.4598 is the mass defect
Since one amu = 1.6605402E^-27 kg, multiply the mass defect to get the mass defect in kilograms: