Molecular Physics | Thermodynamics Answers

In an adiabatic process, 550 J of net work is done on a gas to significantly reduce its volume. Determine the change in internal energy of the gas?

3.5 moles of CO2 in a container were expanded against an external pressure of 2.5 atm to a final volume of 37L. The initially pressure and temperature were 8 atm and 30⁰C, respectively. Calculate the final temperature and the work done for the process.

Determine the temperature (in Kelvin) for 1 mol of gas at 10 atm with a volume of 15L

The temperature of a metal having 7 g mass was raised by 117⁰C after 237.5 J of energy was supplied. Determine what is the metal's specific heat.

210 J of heat is added to a system having an internal energy of 58 J. Calculate the amount of the external work done by the system.

A gas in a closed container is added with 20J of heat. The lid to the container is then lifted for 20 cm with 2.5 N of force. Calculate how much the energy added to the system.

A 78 g container of containing a liquid solution is heated to 98⁰C. Another 3g of the same solution at temperature of 40⁰C is added to the container. Determine the final temperature of the solution?

A silver teaspoon at temperature 7⁰C is placed in a cup of hot coffee at temperature 93⁰C. If the teaspoon has a mass of 32 g and the hot coffee has 90g of mass, determine the final temperature of the silver teaspoon? Ccoffee = 1 cal/g.K Csilver = 0.0558 cal/g.K

750 g of hot curry at 80⁰C cools down to 25⁰C after 1 hour left in the kitchen. If the specific heat of the soup is 3.67kJkg∘C, how much energy does the curry release into the kitchen?

The heat energy needed to raise the temperature of steam from 100 to 120 degrees Celcius (in Joules) =