Which is the limiting reactant when 12.0 moles of CH. are reacted with 20.0 moles of O, in the following equation? CH. + 20. --> CO + 2H2O

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.