Question

A sample of a solid substance has a mass m and a density ?0 at a temperature T0. (a) Find the density of the substance if its temperature is increased by an amount ?T in terms of the coefficient of volume expansion ?. (Use any variable or symbol stated above as necessary.) (b) What is the mass (m') of the sample if the temperature is raised by an amount ?T? (Use any variable or symbol stated above as necessary.)

Answer 1

(a). If the temperature of a substance is increased the density of it will also increased. The temperature is directly proportional to the density because the molecular activity of the substance will be affected by the temperature

(b).The mass of the substance doesn't at all. Because the amount of matter inside the substance cannot be affected by the temperature except that its water