Can someone go answer my qeastion please this is what it looks like

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution