A mixture of xenon and nitrogen gases contains xenon at a partial pressure of 571
mm Hg and nitrogen at a partial pressure of 156 mm Hg. What is the mole fraction of
each gas in the mixture?

Please look at the picture above

XXe=?
XN2=?

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.