Exam 16: Nuclear Chemistry

The half life of 14C is 5,715 years.

Which of the following is the easiest to block from penetrating?

16O, 17O and 18O are ________ of oxygen.

Match each of the isotopes with the daughter isotope produced via a beta-emission. -thorium-234

Both the proton and neutron have the same mass number.

Match each of the isotopes with the daughter isotope produced via an alpha-emission. -polonium-210

The reaction below is an example of ________. 12C + 12C → 24Mg

Match each isotope with its location on the band of stability. -calcium-40

Which of the following particles is a nucleon?

35Cl and 37Cl are isotopes.

Identify X in the reaction below. X + 1n → 142Ba + 91Kr + 3 1n

Fusion reactors of the future hope to make use of the following reaction: 2H + 3H → 4He + 1n How much energy is released in this process (in J/mol)? (2H = 2.0141 g/mol; 3H = 3.0160 g/mol; 4He = 4.0026 g/mol; 1n = 1.00866 g/mol)

If the half-life of an isotope is 5 hr, the amount of 20.0 g remaining after 15 hr will be ________.

The reaction below is an example of ________. 230U → 139Ba + 89Kr + 2 1n

Uranium-238 can capture a neutron inside a nuclear reactor (a so-called breeder reactor), producing an isotope of plutonium and two beta particles. The plutonium can then itself be used as a nuclear fuel. Write a balanced equation for the breeder reactor's production of plutonium (include isotope number) from uranium-238.

The daughter isotope of 210Po when it undergoes beta-emission is 210At.

40Ar, 40K and 40Ca are isotopes.

Match each of the isotopes with the corresponding mechanism that provides a more stable product (a p/n ratio closer to 1) . -bismuth-214

Match each of the isotopes with the corresponding mechanism that provides a more stable product (a p/n ratio closer to 1) . -protactinium-234

Which of the following does not carry neutrons?