(a) describe the joule-thomson effect and explain its relationship enthalpy process. hence explain why the joule-thomson coefficient is given by: to a constant дт др h [6 marks] (b) the equation of state for one mole of a real gas with low density may be written in terms of the virial expansion: rt + b2(t)р pv where b2(t) depends only on temperature and differs from one gas to another. find an expression for the joule-thomson coefficient ajt for this gas, and discuss the circumstances in which the joule-thomson process can be used to cool the gas.

What happens to atoms and chemical bonds during a reaction?

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.