What does the pressure of a gas measure? a The speed of the moving gas particles.
b The amount of space a gas occupies.
С
The force from collisions of gas particles.
d The amount of gas particles.

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It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

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