A sample of neon gas is heated from 300 K to 390 K. Calculate the percent increase in its kinetic energy.

Answer : The percent increase in its kinetic energy is, 30 %

Explanation :

Formula used for kinetic energy is:

where,

K.E = kinetic energy

R = gas constant

T = temperature

The expression of kinetic energy at 300 K temperature:

The expression of kinetic energy at 390 K temperature:

Now we have to calculate the change in kinetic energy.

Change in kinetic energy =

Change in kinetic energy =

Change in kinetic energy =

Now we have to calculate the percent increase in its kinetic energy.

Percent increase in kinetic energy =

Percent increase in kinetic energy = 30 %

Thus, the percent increase in its kinetic energy is, 30 %

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

conduction, convection, radiation