Because it's protected from air because air makes it turn brown.
The electron configuration for magnesium is 1s22s22p63s2
Today, natural sciences<span> are more </span>commonly divided<span> into life </span>sciences<span>, such as botany and zoology; and physical </span>sciences<span>, which include physics, chemistry, geology, astronomy and materials </span>science<span>.</span>
Diffusion is a process that results from the random motion of molecules and results in a net movement of matter from a high-concentration region to a low-concentration zone.
Answer:If the pressure of a gaseous reaction mixture is changed the equilibrium will shift to minimise that change. If the pressure is increased the equilibrium will shift to favour a decrease in pressure.
Explanation:
Slidin brainliest??
