Which of the following is an example of how research into the effects of a chemical has changed how it is used? a. finding out that a pesticide is dangerous but continuing to use it b. finding out that asbestos is dangerous and limiting its use in building materials c. using a new kind of material made by chemists to make clothes, instead of cotton d. using salt to preserve meat

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: