Forces of attraction limit the motion of particles most in? is it a solid? or is it a liquid? or a gas? or both liquids and gases

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution