Question

15 POINTS!!!
A certain substance is a solid at 15°C. Sarah heated a sample of the solid substance in a beaker using a Bunsen burner during science class. She and her partner recorded the temperature at one-minute intervals. Their data is recorded in the table below. Based on the girls' data, when was the kinetic energy of the substance the greatest?
A) At 15° C
B) At 60°C.
C) When they started the heating process.
D) During the period when the substance remained at 54°C.

Answer 1

Answer:

• At 60 centigrade, the kinetic energy of the substance will be greatest.

Explanation:

As we know, the kinetic energy of substance is directly proportional to Temperature.

The total Kinetic energy can be calculated as follow

                                                K.E = 3/2 n.R.T

From the equations, it is cleared that Temperature is directly proportional to temperature.

Answer 2

At 60° C. The higher the temperature, the higher the kinetic energy.