How many grams of barium chloride are produced when 1.25 x 1029 molecules of HCL reacts with barium according to the following equation?

word equation:
formula equation (balanced)?

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.