Diffusion<span> is the spread of particles through random motion from regions of high concentration to regions of lower concentration. Because </span>diffusion<span> works without barriers, when </span>smoke<span> is emitted into the air, it can easily travel to surrounding areas. hope this can help you ^_^ </span>
Atomic Number is 7, because isotopes contain the same number of protons. The mass number is 17, because protons + neutrons = mass number.
Answer:
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion is called kinematics.
the answer to the question is (D)
