Conjugated dienes react with radicals by both 1,2 and 1,4 addition. Write a detailed mechanism to account for this fact using the hydrogen peroxide-promoted addition of one molar equivalent of HBr to 1,3-butadiene as an illustration.

How does litmus paper indicate an acid?

How much energy is made when a pice of wood burns. how do you know

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)