What volume of 0.25M solution can be made from 2.1 mol of KCl?

i just learnt this recently but i need to look through my notes again

that tool would be a compass

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.