Calculate the change in the entropies of the system and the surroundings, and the total change in entropy, when the volume of a sample of argon gas of mass 21 g at 298 k and 1.50 bar increases from 1.20 dm3 to 4.60 dm3 in
(a) an isothermal reversible expansion,
(b) an isothermal irreversible expansion against pex = 0, and
(c) an adiabatic reversible expansion.

Heat flow inside earth activity i chose chemistry cause there is no science alert! the newspaper has been hacked, and all of the headlines have been changed to reflect old legends. it is your task to make sure they are corrected. choose one of the newspaper headlines. you will rewrite the headline and a one-to-two-paragraph article to make the news scientifically correct. be sure to include the following in your corrected newspaper article: new title reflecting correct information detailed information about the processes and tectonic plate interactions that are causing the geological event to occur real-world example of where to find the geological event on earth (picture and location) also review the grading rubric before you begin.

Which term describes a fracture in the earth at which land stays in the same place? a. joint b. fault c. split d. hinge

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms