If 1.5mg of chloride are found in 3.0kg of water, what is the concentration of chloride in ppm?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

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.