Which is a property of every heterogeneous mixture?
a. the mixture is made up of at least two different states.
b. the mixture is made up of something dissolved in a liquid.
c. the composition of the mixture is the same throughout.
d. the characteristics of the mixture change within a sample.

D. The characteristics of the mixture change within a sample.

Explanation: Homogeneous mixture are those mixtures in which dispersed phase is uniformly distributed throughout the dispersion medium and thus the composition is same throughout. There is no physical distinction between the dispersed phase and dispersion medium. Example: Salt in water

Heterogeneous mixture are those mixtures in which dispersed phase is not uniformly distributed throughout the dispersion medium and thus the composition is not same throughout .There is a physical distinction between the dispersed phase and dispersion medium. Example : Oil in water

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.