How much faster is the arctic warming compared to the rest of the world?

Twice

Explanation:

According to the latest studies about the global warming and how it affects part of the world, the research has shown that the Arctic is warming up twice as fast as the rest of the world. This should not really come as a surprise as the Arctic is not consisted of land mass, but instead of ocean water. The ocean water needs slightly lower temperature to freeze, so it is easier for it unfreeze. Once it unfreezes it moves and it becomes part of the global water circulation patterns. This results in bring in more warmth to the Arctic through the ocean currents, which also results in more melting of the ice, so the rate of warming up is constantly increasing.

They will move out of the potato into the salt solution. 75 water molecules.

Explanation:

Molecules like to be at an equilibrium, so if it is more salty on one side, the water molecules on the other side are going to move to the salty side in an attempt to lower the salt concentration. In order to reach the equilibrium they want, both sides have to have equal numbers of water molecules so in this case, about 75 water molecules will leave the potato and move into the solution so that both the potato and the solution have 125 total water molecules.