Assertion: neutron | /r/HasAspect | a mass of 1.008665 u
Facets:
Source sentences:
text: So, to calculate the binding energy, we need to determine the difference in mass between the parts and the whole, which means adding together the mass of two 1H atoms (hydrogen atoms that consist of 1 proton and 1 electron and have a mass of 1.007825 u), plus the mass of two neutrons (which have a mass of 1.008665 u each), and then subtracting the mass of the 4He atom from the sum of the masses, which gives the result 0.030377u.