A piston at a volume of 20. L holds a gas at 100 degrees Celsius. The volume changes to 15 L as the gas is cooled. What is the new temperature of the gas in the piston in degrees celsius?

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.