What happens when a mixture is formed?
two or more elements are fused together through a chemical reaction.
two elements are combined such that they can no longer be identified by
their individual properties
two elements are mingled together without combining chemically.
two identical atoms are joined together chemically,

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move