How would you expect the number of vacancies per unit volume to change in a metal as the temperature increases? explain

 It will decrease

Explanation: The number of vacancies per unit volume in a metal when the temperature is increased will decrease because when temperature increases, it will increase the volume thereby decreasing the number of vacancies.

Vacancies are the holes which are created in the metal due to the absence of the metal ions from the crystal lattice. These are also known as holes or voids.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.