People with astigmatism have blurry vision at both close and far distances. What type of lenses correct this problem?

Choose all the answers that apply. as ocean depth increases, temperature decreases temperature increases pressure increases pressure decreases salinity increases density increases

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate