A student has a sample of a solid dissolved in a liquid. The task is to separate the mixture into its pure components. What question is best asked in the design of the experiment to determine how to separate the components?

A) Can the solution be filtered using filter paper and a funnel?
B) Can the solid be physically removed with forceps or a small manipulative?
Eliminate
C) Will the solvent evaporate at a different temperature than the solute in a distillation procedure?
D) Will the solid form a distinct layer on the bottom of the mixture when the mixture is not in motion?

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle