I need help yo but can somebody help me yo

What volume of a 0.25 m solution can be made using 0.55 moles of ca(oh)2

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

What is the farthest destination to date for a human spaceflight mission?