List some advantages and disadvantages of hydrogen, direct methanol, and microbial fuel cells.

Nuclear power is one potential energy source that does not involve fossil fuels. Current nuclear technology is dependent on fission reactions. Nuclear technology developed very rapidly between 1940 and 1970. Outline why this occurred.

Nuclear power is one potential energy source that does not involve fossil fuels. Current nuclear technology is dependent on fission reactions. The equation for a possible nuclear fission reaction is:
${}_{92}{}^{235}\mathrm{U}+ {}_1{}^0\mathrm{n} \to {}_{38}{}^{90}\mathrm{Sr} +{}_{54}{}^{136}\mathrm{Xe} + 10 {}_0{}^1\mathrm{n}$

The masses of the particles involved in the fission reaction are shown below:

mass of neutron$= 1.00867 \mathrm{u}$

mass of $\mathrm{U}-235$ nucleus$= 234.99333 \mathrm{u}$

mass of $\mathrm{Xe}-136$ nucleus $= 135.90722 \mathrm{u}$

mass of $\mathrm{Sr}-90$ nucleus $= 89.907 74 \mathrm{u}$

Determine the energy released when one uranium nucleus undergoes fission according to the reaction above.

Nuclear fuels require the enrichment of natural uranium. Explain how this process is carried out including the underlying physical principle.

Nuclide X has a half-life of $1$ day and nuclide Y has a half-life of $5$ days. In a particular sample, the activities of X and Y are found to be equal. When the activity is tested again after $10$ days, the activity will be

Which one of the following diagrams best illustrates the first two stages of an uncontrolled fission chain reaction?