Urgent! this is two questions from my science test that is due in a couple minutes

What is the mass of 0.46 mol of mgcl2

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.