A student is doing an investigation on the movement of objects. Why is it important for her to repeat the investigation several times?​

How many moles of gas are present if p=11 atm, v=12l, t=185k?

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction