When one neutron from the U-235 fission reaction causes another nucleus of this metal to undergo fission, it causes the entire chain reaction to continue. This condition is called the “critical condition” while the mass of U-235 required to produce this condition is called “critical mass”...
The universal mass unit, abbreviated u (sometimes amu for atomic mass unit), is defined as one-twelfth of the mass of the 12C atom which has been defined to be exactly 12 u. The absolute mass of a 12C atom is obtained by dividing the value 12 by the Avogadro number (NA = 6.022 137...
1.a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy. 2.a bomb whose explosive force comes from a chain reaction based on nuclear fission in U-235 or plutonium. ...
•Atomic and nuclear based allotropes, isomers&crystal structure. •Electron structure, orbital shells, orbital shapes and quantization. •Chemical bonding, bond angles, bond types and bond strength. •why matter and mass are not the same thing. ...
1.a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy. 2.a bomb whose explosive force comes from a chain reaction based on nuclear fission in U-235 or plutonium. ...
Atomic bombs have been designed by students, but their actual construction is a complex industrial process. Practical fissionable nuclei for atomic bombs are the isotopes uranium-235 and plutonium-239, which are capable of undergoingchain reaction. If the mass of the fissionable material exceeds the...
235 U and 238 U. The atomic mass of uranium is 237.950 amu. What is the percent abundance of each isotope? 235 amu (x) + 238 amu (1-x) = 237.950 amu 235 amu (x) + 238 amu – 238 amu (x) = 237.950 amu -3 amu (x) = -0.050 amu ...
atomic mass, atomic weight mass - the property of a body that causes it to have weight in a gravitational field combining weight, eq, equivalent weight, equivalent - the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is ...
average atomic mass vs. atomic number average atomic mass- is an average from all the isotopesatomic number- is the amount of protons the atom will have no matter what neutron:proton affects stability in the atom isotope notations uranium- 235 235/92 U關於...
The most common nuclear fuels are 235U (the isotope of uranium with an atomic mass of 235 and of use in nuclear reactors) and 239Pu (the isotope of plutonium with an atomic mass of 239). These fuels break apart into a bimodal range of chemical elements with atomic masses centering near ...