1) Explain why water boils at a lower temperature (< 100 degrees celsius) in locations such as Denver, Colorado (which is at a fairly high altitude).

2) During an operating, the patient is given a mixture of gas containing oxygen (so the patient can breathe) and an anaesthetic gas (so the patient is unconscious). Explain why Dalton's Law of Partial Pressures and the Ideal Gas Law are important with respect to this medical application.